> ## Documentation Index
> Fetch the complete documentation index at: https://agents-docs.lightspark.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Update a card

> Update a card's status, funding source, merchant categories, risk ceiling, or threeDSecurePassword. At least one field must be supplied. Manage velocity limits through `/card-velocity-limits`.

- `status` transitions include `ACTIVE ⇄ FROZEN`, `PENDING_AUTH → ACTIVE | FROZEN`, and `ACTIVE | PENDING_AUTH | FROZEN → CLOSED`. `CLOSED` is terminal and irreversible. Activating a card whose USDB funding source lacks a usable delegated key returns `409 INVALID_STATE_TRANSITION`. `PENDING_AUTH` is managed by Grid and cannot be requested. Completing delegation does not unfreeze or reopen a card. Requesting `status: ACTIVE` returns `409 INVALID_STATE_TRANSITION` while the customer is not `ACTIVE`, for a card Grid froze for review, and for a card frozen with substatus `COMPROMISED`. Contact Grid support to have such a card reviewed, or close a compromised card and issue a new one.
- `fundingSource`, when supplied, replaces the card's bound internal account. It must belong to the customer and use a currency supported by the card program, including USDB for USD cards. An active card becomes `PENDING_AUTH` when switched to USDB without an active delegated key. Switching back to USD restores readiness. `fundingSource` cannot be supplied alongside `status: CLOSED`. On card programs where the card issuer makes authorization decisions, `fundingSource` cannot be combined with any `status` change, so send the changes as separate requests. On card programs where Grid makes the authorization decision, the combination remains valid for `status` changes other than `CLOSED`.
This endpoint is authenticated by the platform credential alone and returns `200` directly. It deliberately does not use Grid's 202 → signed-retry pattern: that pattern signs with the session key of a credential on the owning internal account, so it models actions taken *by* the end user on their own credentials or funds. Freezing or closing a card is routinely an action taken *about* a user and without them present - fraud response, offboarding, an ops-driven freeze - and requiring the cardholder's signature would make exactly those cases impossible. Operations that expose sensitive card data (`POST /cards/{id}/reveal`, 3DS password retrieval) are SCA-railed instead, because there the cardholder is the party being served.

Effects:
- `status: FROZEN`: Authorization Decisioning declines new auths with `cardDeclinedReason: CARD_NOT_ACTIVE`. Existing pulls and in-flight reconciliation continue — freezing does not pause the lifecycle of authorizations that already passed.
- `status: ACTIVE`: normal authorization behavior resumes.
- `status: CLOSED`: terminal close. The card transitions to `status: "CLOSED"` with `statusReason: "CLOSED_BY_PLATFORM"` and stays in the system for audit and reconciliation. All pending auths reconcile to a terminal state via the existing reconcile primitive. Inbound clearings received after close follow the standard force-post / late-presentment path — Lightspark absorbs the loss if a post-hoc pull on the now-unbound source fails. The funding source is detached. Refunds already in flight still complete because Lightspark holds the card-reserve keys.
- `fundingSource` change: returns the updated card with the new binding and fires no webhook.

The `card.status_change` webhook fires on every successful `status` transition.




## OpenAPI

````yaml /openapi.yaml patch /cards/{id}
openapi: 3.1.0
info:
  title: Grid API
  description: >
    API for managing global payments on the open Money Grid. Built by
    Lightspark. See the full documentation at https://docs.lightspark.com/.
  version: '2025-10-13'
  contact:
    name: Lightspark Support
    email: support@lightspark.com
  license:
    name: Proprietary
    url: https://lightspark.com/terms
servers:
  - url: https://api.lightspark.com/grid/2025-10-13
    description: Production server
security:
  - BasicAuth: []
  - AgentAuth: []
tags:
  - name: Platform Configuration
    description: >-
      Platform configuration endpoints for managing global settings. You can
      also configure these settings in the Grid dashboard.
  - name: Customers
    description: >-
      Customer management endpoints for creating and updating customer
      information
  - name: Contact Verification
    description: >-
      Endpoints for verifying a customer's email and phone via one-time codes.
      Required only for customers whose payment provider mandates contact
      verification (e.g. EU customers); other providers return 409.
  - name: Strong Customer Authentication
    description: >-
      Endpoints for authorizing money-movement operations that require Strong
      Customer Authentication. Relevant only for customers in a region where SCA
      is required (e.g. EU); customers outside SCA-regulated regions never see
      an SCA challenge and these endpoints return 409.
  - name: KYC/KYB Verifications
    description: >-
      Endpoints for Know Your Customer (KYC) and Know Your Business (KYB)
      verification, including managing beneficial owners and triggering
      verification for customers.
  - name: Documents
    description: >-
      Endpoints for uploading and managing verification documents for customers
      and beneficial owners. Supports KYC and KYB document requirements.
  - name: Internal Accounts
    description: >-
      Internal account management endpoints for creating and managing internal
      accounts
  - name: Periodic Statements
    description: >
      Build, deliver, and evidence a Regulation E periodic statement for a
      customer's internal account. A statement period is a calendar month in US
      Central time (`America/Chicago`).


      A statement is issued for each customer's own USD internal account and
      covers their whole balance. Money received through a rule-based account
      appears on its owner's statement; rule-based, bulk settlement and
      platform-owned accounts have no statement of their own.


      **1. The statement — `GET
      /internal-accounts/{id}/balance-changes?startDate=&endDate=`**


      One row per change to the balance, in the order the money moved, with the
      opening and closing balances for the window in the same response. Page
      until `hasMore` is false, then assert this identity across every page
      before you render anything:


      ```

      openingBalance + Σ(data[].amount) == closingBalance

      ```


      If it does not hold, do not send the statement; contact support instead.
      `startDate` and `endDate` bound a half-open window `[startDate, endDate)`:
      for a monthly statement, pass the first instant of the month and the first
      instant of the following month, both in US Central time (for August 2026,
      `2026-08-01T00:00:00-05:00` and `2026-09-01T00:00:00-05:00`). Grid records
      a statement as fetched only for a window that is exactly one such month.


      **2. The receipt — `POST /internal-accounts/{id}/confirm-statement`**


      Once a month, after you have pulled and issued a period's statement, send
      a receipt with the `statementMonth` it covers. Grid stores it as the
      delivery record for that account and period. Sending it again is harmless:
      the first receipt's time is kept.


      **Timing**


      A window whose card settlement has not closed is refused with `409
      NOT_YET_AVAILABLE` rather than answered with figures that could still
      change; retry once it has settled.
  - name: External Accounts
    description: >-
      External account management endpoints for creating and managing external
      bank accounts
  - name: Same-Currency Transfers
    description: >-
      Deprecated endpoints for transferring funds between internal and external
      accounts with the same currency. Use the quote endpoints under
      Cross-Currency Transfers instead, which now serve same-currency transfers
      as well.
  - name: Cross-Currency Transfers
    description: >-
      Endpoints for creating and confirming quotes for transfers, both
      same-currency and cross-currency
  - name: Payout Runs
    description: >-
      Endpoints for paying many recipients from one internal account in one
      request, and for reconciling the result
  - name: Settlement Rules
    description: >-
      Endpoints for standing instructions that split a customer's matching
      incoming payments among recipients as soon as the payments complete
  - name: Transactions
    description: Endpoints for retrieving transaction information
  - name: Webhooks
    description: Webhook endpoints and configuration for receiving notifications
  - name: Invitations
    description: Endpoints for creating, claiming and managing UMA invitations
  - name: Sandbox
    description: Endpoints to trigger test cases in sandbox
  - name: API Tokens
    description: Endpoints to programmatically manage API tokens
  - name: Exchange Rates
    description: >-
      Endpoints for retrieving cached foreign exchange rates. Rates are cached
      for approximately 5 minutes and include platform-specific fees.
  - name: Discoveries
    description: >-
      Endpoints for discovering available payment rails, banks, and providers
      for a given country and currency corridor.
  - name: Embedded Wallet Auth
    description: >-
      Endpoints for registering and verifying end-user authentication
      credentials (email OTP, OAuth, passkey) used to sign Embedded Wallet
      actions.
  - name: Agent Management
    description: >-
      Endpoints for creating and managing agents, called by the partner's
      backend using platform credentials. Covers the full agent lifecycle:
      creation, policy configuration, pausing, deletion, the device code
      installation flow, and approving or rejecting transactions initiated by
      agents.
  - name: Agent Operations
    description: >-
      Endpoints called by the agent itself using its own credentials (obtained
      via device code redemption). Scoped to the agent's associated customer —
      all requests automatically operate on behalf of that customer and are
      subject to the agent's policy. When a request requires approval, it is
      held as an agent action in `PENDING_APPROVAL` until the platform approves
      it via `POST /agents/{agentId}/actions/{actionId}/approve` or rejects it.
  - name: Claimable Payouts
    description: >-
      Endpoints the platform's claim page calls for a claimable payout an agent
      sent to a person by phone number or email: issue the claim token for the
      recipient's link, look the payout up by it, list how Grid can pay her,
      lock a quote to her account and confirm it.
  - name: Cards
    description: >-
      Card management endpoints. Issue debit cards against an internal account,
      freeze / unfreeze, close, manage a card's funding source, and list card
      transactions.
  - name: Stablecoins
    description: >-
      Stablecoin issuance endpoints. Link provider accounts, register
      provider-created stablecoins, create direct mint/burn issuer operations,
      and track operation status.
  - name: Embedded Care
    description: |
      A support chat between the cardholder and Lightspark's care agent, driven
      from the partner's own app. The platform calls with its ordinary Grid
      credential, but the person typing is the cardholder rather than the
      caller, so reaching that cardholder's account takes a second proof: an
      SMS code they send into the chat, after which the partner carries a
      session token in the `X-Ls-Care-Session` header.

      **The surface is two routes, and verification happens inside the
      conversation.**

      1. **Open the chat.** `POST /care/chats/{chatId}/messages` with an empty
         `message`, addressed to the cardholder as `Customer:<uuid>`. Returns
         the chat's id and the agent's opening line in `reply`, which is what
         a chat window renders before anybody has typed. Sends no SMS, needs
         no `Idempotency-Key` and consumes none, and is safe to call again: a
         widget that reloaded gets the same chat back, this time without a
         `reply`.
      2. **Send the cardholder's first message.** The same route with their
         text and an `Idempotency-Key` header. One turn runs synchronously and
         the agent's answer comes back in `reply`. On a chat that cannot yet
         reach the account this call also texts the cardholder a code, and the
         agent's `reply` asks for it.
      3. **The cardholder sends the code as an ordinary message.** When it is
         correct, the response to that turn carries `sessionToken` and
         `expiresAt`. Send that token as the `X-Ls-Care-Session` header on
         every message from then on. A code that does not match is answered in
         `reply`, and the cardholder can simply send it again.
      4. **Close the chat** with `DELETE /care/chats/{chatId}` when the
         cardholder is done. Every response also carries `chatEnded`, and the
         agent can end the chat itself: when `chatEnded` is true, the closing
         line is in `reply` and the chat takes no further messages, so stop
         sending to it. An opening addressed to that `CareChat:<id>` answers
         `409 CARE_CHAT_ENDED`; address the cardholder as `Customer:<uuid>`
         to open a new chat.

      **Render `redactedCustomerMessage` if present, then `reply` if
      present.** That one rule covers an opening, a resume and a turn.

      **A cardholder whose code never arrived asks the agent for another
      one.** The agent sends a new code to the number on file and says so in
      its `reply`. There is no separate route for it.

      **The verification fields are optional hints.** `verificationRequired`
      and `codeLength` let an app show a dedicated one-time-code input of the
      right length, marked as a one-time code so iOS and Android offer to fill
      it from the SMS. A partner can ignore them, since the agent asks for the
      code in its reply and says where it went, and the app still sends the
      code as an ordinary message.

      Step 1 is optional. A message addressed to a `Customer:` id opens that
      cardholder's chat if they have none, so a partner whose cardholder has
      just typed something spends one call rather than two.

      A cardholder who has not verified yet is never a `401`, because the
      first message from every new cardholder is unverified and a `401` there
      would be indistinguishable from a bad credential. On these endpoints a
      `401` means the platform's Grid credential is wrong, the session token
      presented is malformed, or a replay lacks the session token its original
      request required.

      **Verification expires, and a lost session is recoverable in the
      chat.** A chat reaches the cardholder's account only while its
      verification is newer than the session lifetime, fifteen minutes in the
      default deployment, which is also how long a session token lives. Past
      that window a message gets a fresh code, and the agent asks the
      cardholder to send it back inside the conversation, which hands the
      partner the next session token. A new message sent with no
      `X-Ls-Care-Session` header, or with a token past its expiry, on a chat
      whose verification is still current is treated the same way: the
      verification is cancelled before the turn runs, a new code is sent, and
      the agent asks for it. So a client that lost its token, or held one too
      long, simply keeps sending messages. Only a token that is malformed, or
      that was minted for another platform, chat or cardholder, is refused.

      Two things an integration has to get right:

      - **Render `redactedCustomerMessage`, never your own copy of what was
        typed.** Grid masks card numbers and other sensitive digit strings in
        it. A UI that renders its own copy of the input instead puts a card
        number the cardholder pasted back on their screen unmasked, and into
        your logs.
      - **The session token is returned once and is never re-readable.** No
        endpoint hands it back, it cannot be revoked, and it is short-lived by
        design. Hold it for the life of the cardholder's session. It arrives
        on the message response to the turn in which the cardholder sent their
        code, and on no other. Losing it costs the cardholder a new code, never
        access to the chat.

      Some things are absent by construction, so no integration can come to
      depend on them: nothing returns a transcript or an earlier turn's reply
      (retrying under the original `Idempotency-Key` is how an answer that was
      produced but not delivered is recovered; a replay requires the same
      session token its original request required and never carries a
      `sessionToken`, so a lost token is recovered by sending the cardholder's
      next message as a new message, which verifies them again), nothing sets
      a verification state, and nothing changes the number a code is sent to.

      Errors from these endpoints carry `code` and `reason` only (see the
      `CareError` schema), unlike the `Error4xx` schemas used elsewhere in this
      specification.
paths:
  /cards/{id}:
    parameters:
      - name: id
        in: path
        description: System-generated unique card identifier
        required: true
        schema:
          type: string
    patch:
      tags:
        - Cards
      summary: Update a card
      description: >
        Update a card's status, funding source, merchant categories, risk
        ceiling, or threeDSecurePassword. At least one field must be supplied.
        Manage velocity limits through `/card-velocity-limits`.


        - `status` transitions include `ACTIVE ⇄ FROZEN`, `PENDING_AUTH → ACTIVE
        | FROZEN`, and `ACTIVE | PENDING_AUTH | FROZEN → CLOSED`. `CLOSED` is
        terminal and irreversible. Activating a card whose USDB funding source
        lacks a usable delegated key returns `409 INVALID_STATE_TRANSITION`.
        `PENDING_AUTH` is managed by Grid and cannot be requested. Completing
        delegation does not unfreeze or reopen a card. Requesting `status:
        ACTIVE` returns `409 INVALID_STATE_TRANSITION` while the customer is not
        `ACTIVE`, for a card Grid froze for review, and for a card frozen with
        substatus `COMPROMISED`. Contact Grid support to have such a card
        reviewed, or close a compromised card and issue a new one.

        - `fundingSource`, when supplied, replaces the card's bound internal
        account. It must belong to the customer and use a currency supported by
        the card program, including USDB for USD cards. An active card becomes
        `PENDING_AUTH` when switched to USDB without an active delegated key.
        Switching back to USD restores readiness. `fundingSource` cannot be
        supplied alongside `status: CLOSED`. On card programs where the card
        issuer makes authorization decisions, `fundingSource` cannot be combined
        with any `status` change, so send the changes as separate requests. On
        card programs where Grid makes the authorization decision, the
        combination remains valid for `status` changes other than `CLOSED`.

        This endpoint is authenticated by the platform credential alone and
        returns `200` directly. It deliberately does not use Grid's 202 →
        signed-retry pattern: that pattern signs with the session key of a
        credential on the owning internal account, so it models actions taken
        *by* the end user on their own credentials or funds. Freezing or closing
        a card is routinely an action taken *about* a user and without them
        present - fraud response, offboarding, an ops-driven freeze - and
        requiring the cardholder's signature would make exactly those cases
        impossible. Operations that expose sensitive card data (`POST
        /cards/{id}/reveal`, 3DS password retrieval) are SCA-railed instead,
        because there the cardholder is the party being served.


        Effects:

        - `status: FROZEN`: Authorization Decisioning declines new auths with
        `cardDeclinedReason: CARD_NOT_ACTIVE`. Existing pulls and in-flight
        reconciliation continue — freezing does not pause the lifecycle of
        authorizations that already passed.

        - `status: ACTIVE`: normal authorization behavior resumes.

        - `status: CLOSED`: terminal close. The card transitions to `status:
        "CLOSED"` with `statusReason: "CLOSED_BY_PLATFORM"` and stays in the
        system for audit and reconciliation. All pending auths reconcile to a
        terminal state via the existing reconcile primitive. Inbound clearings
        received after close follow the standard force-post / late-presentment
        path — Lightspark absorbs the loss if a post-hoc pull on the now-unbound
        source fails. The funding source is detached. Refunds already in flight
        still complete because Lightspark holds the card-reserve keys.

        - `fundingSource` change: returns the updated card with the new binding
        and fires no webhook.


        The `card.status_change` webhook fires on every successful `status`
        transition.
      operationId: updateCardById
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CardUpdateRequest'
            examples:
              freeze:
                summary: Freeze an active card
                value:
                  status: FROZEN
                  substatus: SUSPICIOUS_ACTIVITY
                  reason: Unrecognised charges reported by the cardholder.
              unfreeze:
                summary: Unfreeze a frozen card
                value:
                  status: ACTIVE
                  substatus: ISSUER_REQUEST
                  reason: Review closed with no action.
              updateFundingSource:
                summary: Replace the card's bound funding source
                value:
                  fundingSource: InternalAccount:019542f5-b3e7-1d02-0000-000000000003
              freezeAndUpdateSource:
                summary: Freeze the card and replace its funding source in one call
                value:
                  status: FROZEN
                  substatus: SUSPICIOUS_ACTIVITY
                  reason: Unrecognised charges reported by the cardholder.
                  fundingSource: InternalAccount:019542f5-b3e7-1d02-0000-000000000003
              close:
                summary: Permanently close the card
                value:
                  status: CLOSED
                  substatus: END_USER_REQUEST
                  reason: Cardholder asked us to close the card.
      responses:
        '200':
          description: Card updated. Returns the updated card.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Card'
        '400':
          description: >-
            Bad request. Returned with `INVALID_INPUT` when a supplied funding
            source does not belong to the cardholder or uses a currency
            unsupported by the card program, when `fundingSource` is combined
            with any `status` change on a card program where the card issuer
            makes authorization decisions, when `status` is supplied without
            `substatus` or without a non-empty `reason`, and for general invalid
            parameters.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error400'
        '401':
          description: >-
            Unauthorized. Returned when the platform credential is missing or
            invalid, or does not grant access to this card.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error401'
        '404':
          description: Card not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error404'
        '409':
          description: >-
            Conflict. Returned with `INVALID_STATE_TRANSITION` when the
            requested `status` transition is not one of `ACTIVE ⇄ FROZEN`,
            `PENDING_AUTH → ACTIVE | FROZEN`, or `ACTIVE | PENDING_AUTH | FROZEN
            → CLOSED`, when activation is requested before delegated signing
            authorization is complete, or when `status: ACTIVE` is requested
            while the customer is not `ACTIVE`, for a card Grid froze for
            review, or for a card frozen as `COMPROMISED`; with
            `CARD_ALREADY_CLOSED` when `status: CLOSED` is requested for a card
            that is already `CLOSED`; and with `CARD_NOT_MUTABLE` when the card
            is `CLOSED`.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error409'
        '500':
          description: Internal service error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error500'
        '501':
          description: >-
            Not implemented in this environment. Cards are not enabled for every
            Grid deployment; environments without a configured card issuer
            return `501 NOT_IMPLEMENTED`.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error501'
      security:
        - BasicAuth: []
components:
  schemas:
    CardUpdateRequest:
      type: object
      description: >-
        Update request for `PATCH /cards/{id}`. At least one of `status`,
        `fundingSource`, `maxNetworkRiskScore`, `allowedMccs`, `blockedMccs`,
        `defaultMccBlocksLifted`, or `threeDSecurePassword` must be supplied.
        `defaultMccBlocksLifted` counts only on a card issued for an agent.
        Fields that do not count are ignored. Supplying `status` also requires
        `substatus` and `reason`, so every card state change carries why it
        happened. `status` transitions include `ACTIVE ⇄ FROZEN`, `PENDING_AUTH
        → ACTIVE | FROZEN`, and `ACTIVE | PENDING_AUTH | FROZEN → CLOSED`.
        Explicit activation requires completed delegated signing authorization;
        otherwise it returns `409 INVALID_STATE_TRANSITION`. Funding-source
        changes reconcile `ACTIVE` / `PENDING_AUTH` automatically.
        `PENDING_AUTH` cannot be requested. `CLOSED` is terminal and
        irreversible and cannot be combined with `fundingSource` or
        `maxNetworkRiskScore`. Manage velocity limits through
        `/card-velocity-limits`.
      properties:
        status:
          $ref: '#/components/schemas/CardUpdateStatus'
        substatus:
          $ref: '#/components/schemas/CardUpdateSubstatus'
        reason:
          type: string
          minLength: 1
          description: >-
            A short sentence naming why the card is moving. Required whenever
            `status` is supplied, and recorded against the card so a later
            reader can tell why it changed.
          example: Cardholder reported the card stolen.
        fundingSource:
          type: string
          description: >-
            Replaces the card's funding source. Must belong to the customer and
            be denominated in a currency supported by the card's program,
            including USDB for USD cards. Changing the funding source does not
            change the card's currency or spending-limit units. Cannot be
            supplied alongside `status: CLOSED`. To stop a card from spending,
            set `status: FROZEN` instead.
          example: InternalAccount:019542f5-b3e7-1d02-0000-000000000002
        maxNetworkRiskScore:
          anyOf:
            - type: integer
              minimum: 0
              maximum: 999
            - type: 'null'
          description: >-
            Maximum normalized network risk score allowed for real-time card
            authorizations. Scores range from 0 (lowest risk) to 999 (highest
            risk). Visa scores are normalized by multiplying the raw 0–99 score
            by 10. Scores equal to the ceiling are allowed. Authorizations
            without a score are also allowed. The lowest configured card or
            platform ceiling applies. Omit to preserve the current setting or
            send null to clear this scope.
          example: 700
        threeDSecurePassword:
          type: string
          description: >-
            Sets a new static 3-D Secure password on the card. Send it on its
            own, and only when the card's
            `cardCapabilities.supports3dSecurePassword` is true.
          example: AbCd1234EfGh5678
        allowedMccs:
          anyOf:
            - type: array
              minItems: 1
              items:
                type: string
                pattern: ^[0-9]{4}$
            - type: 'null'
          description: >-
            Replacement list of merchant category codes the card may spend at.
            Supply null to allow every category not blocked, or omit to leave it
            unchanged. Rejected with `INVALID_INPUT` on a card whose issuer
            makes authorization decisions. Cannot be supplied alongside `status:
            CLOSED`. Changing or clearing this list does not loosen Lightspark's
            global, platform, or card controls: all configured allow lists
            intersect and all block lists combine.
          example:
            - '5411'
        blockedMccs:
          anyOf:
            - type: array
              items:
                type: string
                pattern: ^[0-9]{4}$
            - type: 'null'
          description: >-
            Replacement list of merchant category codes the card declines.
            Supply null to clear it, or omit to leave it unchanged. On a card
            issued for an agent, Grid's default agent blocks still apply on top
            of this list; lift them with `defaultMccBlocksLifted`. Rejected with
            `INVALID_INPUT` on a card whose issuer makes authorization
            decisions. Cannot be supplied alongside `status: CLOSED`. Clearing
            this list removes only the card's own blocks; Lightspark's global,
            platform, and card controls still apply.
          example:
            - '7995'
        defaultMccBlocksLifted:
          type: boolean
          description: >-
            On a card issued for an agent, `true` lifts Grid's default agent
            merchant-category blocks and `false` restores them. Ignored on a
            card with no agent. Cannot be supplied alongside `status: CLOSED`.
            Lifting agent defaults does not remove other MCC restrictions.
          example: true
    Card:
      type: object
      required:
        - id
        - customerId
        - status
        - form
        - fundingSource
        - createdAt
        - updatedAt
      properties:
        id:
          type: string
          description: System-generated unique card identifier
          example: Card:019542f5-b3e7-1d02-0000-000000000010
        customerId:
          type: string
          description: The id of the `Customer` who holds this card.
          example: Customer:019542f5-b3e7-1d02-0000-000000000001
        platformCardId:
          type: string
          description: Platform-specific card identifier generated by the server.
          example: card-emp-001
        status:
          $ref: '#/components/schemas/CardStatus'
        statusReason:
          $ref: '#/components/schemas/CardStatusReason'
          description: >-
            Reason associated with the current `status`. Present when the card
            is `PENDING_AUTH`, `CLOSED`, or when provisioning was rejected;
            absent otherwise.
        brand:
          $ref: '#/components/schemas/CardBrand'
        form:
          $ref: '#/components/schemas/CardForm'
        pinStatus:
          $ref: '#/components/schemas/CardPinStatus'
        pinUnblockAvailableAt:
          type: string
          format: date-time
          readOnly: true
          description: >-
            Earliest time another PIN unblock attempt is allowed. Absent until
            the unblock allowance is used. Changing the PIN does not reset this
            time.
          example: '2026-10-15T15:00:00Z'
        last4:
          type: string
          description: Last four digits of the card PAN.
          example: '4242'
        expMonth:
          type: integer
          minimum: 1
          maximum: 12
          description: Card expiration month (1–12).
          example: 12
        expYear:
          type: integer
          description: Card expiration year (four digits).
          example: 2029
        fundingSource:
          type: string
          description: Internal account id that funds this card.
          example: InternalAccount:019542f5-b3e7-1d02-0000-000000000002
        cardCapabilities:
          $ref: '#/components/schemas/CardCapabilities'
          description: >-
            Actions supported for this card by the issuer selected at issuance.
            Present for cards whose program has been resolved; absent otherwise.
            These capabilities are fixed at issuance for the card's lifetime.
        maxNetworkRiskScore:
          anyOf:
            - type: integer
              minimum: 0
              maximum: 999
            - type: 'null'
          description: >-
            Maximum normalized network risk score allowed for real-time card
            authorizations. Scores range from 0 (lowest risk) to 999 (highest
            risk). Visa scores are normalized by multiplying the raw 0–99 score
            by 10. Scores equal to the ceiling are allowed. Authorizations
            without a score are also allowed. The lowest configured card or
            platform ceiling applies. Null means no card-specific ceiling.
            Platform controls still apply.
          example: 700
        allowedMccs:
          type: array
          minItems: 1
          description: >-
            The card's own merchant-category allow list. Absent when the card
            sets no allow list of its own. Lightspark's global, platform, and
            card controls also apply: spending must satisfy every configured
            allow list and no block list. This field does not include inherited
            restrictions.
          items:
            type: string
            pattern: ^[0-9]{4}$
          example:
            - '5411'
        blockedMccs:
          type: array
          description: >-
            Merchant category codes the card declines, with `cardDeclinedReason:
            BLOCKED`. Absent when the card blocks no category of its own. A card
            issued for an agent also declines Grid's default agent categories
            unless `defaultMccBlocksLifted` is true. Lightspark's global,
            platform, and card blocks apply in addition to this list and are not
            included in this field.
          items:
            type: string
            pattern: ^[0-9]{4}$
          example:
            - '7995'
        agentId:
          type: string
          description: The agent the card was issued for, when there is one.
          example: Agent:019542f5-b3e7-1d02-0000-000000000042
        defaultMccBlocksLifted:
          type: boolean
          description: >-
            Whether the platform lifted Grid's default agent merchant-category
            blocks on this card. Present only for a card issued for an agent.
          example: false
        lockedMerchant:
          $ref: '#/components/schemas/CardMerchant'
          description: >-
            The merchant a merchant-locked card (an agent's recurring purchase
            card) is locked to: the first merchant whose authorization on it was
            approved, the only one that can charge it. Absent until that first
            approved charge, and on every other card.
        currency:
          type: string
          description: >-
            Currency the card transacts in, fixed at issuance by its card
            program. USDB-funded cards transact in USD, with funding converted
            at 1 USDB = 1 USD. Spending limits use the smallest unit of the
            card's currency (USD cents for USDB-funded cards). Changing the
            funding source does not change the card's currency or spending-limit
            units.
          example: USD
        processorRef:
          type: string
          description: >-
            Opaque processor-side reference for the card (e.g. the Lithic card
            token). Useful for cross-referencing in the processor's dashboards;
            not used for any Grid request routing.
          example: card_b81c2a4f
        issuerRef:
          type: string
          description: >-
            Opaque identifier for the card on the issuer of record (e.g. the
            Lead Bank account/card identifier). Useful for cross-referencing in
            issuer dashboards; not used for any Grid request routing.
          example: lead_card_7a1b9c3d
        createdAt:
          type: string
          format: date-time
          description: Creation timestamp
          example: '2026-05-08T14:10:00Z'
        updatedAt:
          type: string
          format: date-time
          description: Last update timestamp
          example: '2026-05-08T14:11:00Z'
    Error400:
      type: object
      required:
        - reason
        - code
      properties:
        code:
          type: string
          description: >
            | Error Code | Description |

            |------------|-------------|

            | INVALID_INPUT | Invalid input provided. When Grid knows the cause,
            `details.refusalReason` names it. When a card cannot be issued
            because the customer record lacks fields, it is
            `CARDHOLDER_INFO_MISSING` and `details.missingFields` lists them |

            | END_USER_TERMS_VERSION_NOT_FOUND | The submitted version is not
            supported for the agreement it was sent for |

            | MISSING_MANDATORY_USER_INFO | Required customer information is
            missing |

            | INVITATION_ALREADY_CLAIMED | Invitation has already been claimed |

            | INVITATIONS_NOT_CONFIGURED | Invitations are not configured |

            | INVALID_UMA_ADDRESS | UMA address format is invalid |

            | INVITATION_CANCELLED | Invitation has been cancelled |

            | INVALID_RECEIVER | Receiver is invalid |

            | PARSE_PAYREQ_RESPONSE_ERROR | Error parsing receiver PayReq
            response |

            | CERT_CHAIN_INVALID | Counterparty certificate chain is invalid |

            | CERT_CHAIN_EXPIRED | Counterparty certificate chain has expired |

            | INVALID_PUBKEY_FORMAT | Counterparty Public key format is invalid
            |

            | MISSING_REQUIRED_UMA_PARAMETERS | Counterparty required UMA
            parameters are missing |

            | SENDER_NOT_ACCEPTED | The receiving institution declined this
            sender. Final; a retry returns the same answer |

            | AMOUNT_OUT_OF_RANGE | Amount is out of range |

            | INVALID_CURRENCY | Currency is invalid |

            | INVALID_TIMESTAMP | Timestamp is invalid |

            | INVALID_NONCE | Nonce is invalid |

            | INVALID_REQUEST_FORMAT | Request format is invalid |

            | INVALID_BANK_ACCOUNT | Bank account is invalid |

            | SELF_PAYMENT | Self payment not allowed |

            | PARSE_LNURLP_RESPONSE_ERROR | Error parsing LNURLP response |

            | INVALID_AMOUNT | Amount is invalid |

            | WEBHOOK_ENDPOINT_NOT_SET | Webhook endpoint is not set |

            | WEBHOOK_DELIVERY_ERROR | Webhook delivery error |

            | LOW_QUALITY | Document quality too low to process |

            | DATA_MISMATCH | Document details don't match provided information
            |

            | EXPIRED | Document has expired |

            | SUSPECTED_FRAUD | Document suspected of being forged or edited |

            | UNSUITABLE_DOCUMENT | Document type is not accepted or not
            supported |

            | INCOMPLETE | Document is missing pages or sides |

            | EMAIL_OTP_CREDENTIAL_ALREADY_EXISTS | The account holder already
            has an EMAIL_OTP credential on the target internal account; the
            holder may have one. Administrators' credentials, added with `POST
            /auth/admin-credentials`, are not counted |

            | SMS_OTP_CREDENTIAL_ALREADY_EXISTS | An SMS_OTP credential is
            already registered on the target internal account; only one SMS OTP
            credential is supported per internal account at this time |

            | PASSKEY_CREDENTIAL_ALREADY_EXISTS | A PASSKEY credential with the
            same WebAuthn credentialId is already registered on the target
            internal account |

            | AUTH_CREDENTIAL_VERIFICATION_REQUIRED | The new email or phone
            number has no verified replacement credential |

            | AUTH_CREDENTIAL_VERIFICATION_EXPIRED | The replacement
            credential's verification has expired |

            | STABLECOIN_PROVIDER_ACCOUNT_INVALID | The stablecoin provider
            account link is not usable |

            | STABLECOIN_PROVIDER_ACCOUNT_REVOKED | The stablecoin provider
            account link has been revoked |

            | STABLECOIN_PROVIDER_ACCOUNT_SELECTION_REQUIRED | Multiple active
            provider account links exist; pass `stablecoinProviderAccountId` to
            select one |

            | STORED_CARD_VERIFICATION_FAILED | The card's issuer did not
            confirm the card: its security code, billing address or name did not
            match. Nothing was stored |

            | CARDHOLDER_KYC_NOT_APPROVED | The cardholder's KYC status is not
            `APPROVED`, so a card cannot be issued |

            | ACCOUNTHOLDER_AGREEMENT_NOT_ACCEPTED | The customer create request
            omits an accountholder agreement its accounts require |

            | CARDHOLDER_AGREEMENT_NOT_ACCEPTED | The customer has not accepted
            the cardholder agreement the platform requires before a card is
            issued |

            | TRANSACTION_SIZE_LIMIT_EXCEEDED | The requested amount exceeds the
            configured maximum single-transaction amount for this trade corridor
            or withdrawal currency |

            | EXTERNAL_ACCOUNT_VERIFICATION_REQUIRED | The destination account's
            ownership must be verified before this transfer can proceed |

            | INSUFFICIENT_FUNDS | Insufficient funds for this operation |

            | QUOTE_EXPIRED | The quote has expired; request a new quote |

            | QUOTE_RATE_UNAVAILABLE | No exchange rate is available for this
            corridor right now |

            | STABLECOIN_AMOUNT_NOT_REPRESENTABLE | The amount cannot be
            represented at the token's precision |

            | STABLECOIN_BURN_SOURCE_NOT_SUPPORTED | The burn source account
            cannot be used for this operation |

            | STABLECOIN_EXTERNAL_ACCOUNT_LINK_FAILED | Linking the external
            account for stablecoin operations failed |

            | STABLECOIN_EXTERNAL_ACCOUNT_LINK_METHOD_REQUIRED | The external
            account needs a link method before it can be used |

            | STABLECOIN_EXTERNAL_ACCOUNT_NOT_LINKED | The external account is
            not linked for stablecoin operations |

            | STABLECOIN_EXTERNAL_ACCOUNT_NOT_SUPPORTED | This external account
            type is not supported for stablecoin operations |

            | STABLECOIN_EXTERNAL_ACCOUNT_PROVIDER_LINK_FAILED | The provider
            could not link the external account |

            | STABLECOIN_EXTERNAL_ACCOUNT_PROVIDER_LINK_REQUIRED | The external
            account must be linked with the provider first |

            | STABLECOIN_GRID_OPERATIONS_NOT_ENABLED | The stablecoin is not
            enabled for Grid operations |

            | STABLECOIN_NOT_PROVISIONED | The stablecoin is not provisioned for
            issuer operations |

            | STABLECOIN_OPERATION_NOT_SUPPORTED | The stablecoin does not
            support this operation |

            | STABLECOIN_PROVIDER_ERROR | The stablecoin provider rejected the
            operation |

            | STABLECOIN_PROVIDER_SOURCE_NOT_LINKED | The provider source
            account is not linked |

            | STABLECOIN_VERIFICATION_FAILED | The stablecoin could not be
            verified with the provider |

            | DOCUMENTS_REQUIRED | The destination requires supporting documents
            for the quote's `purposeOfPayment` that the request did not supply.
            `details.missingRequirements` lists the requirement ID of each one |

            | EXACT_AMOUNT_UNAVAILABLE | The quote cannot deliver exactly the
            requested receiving amount at the current rate; quote again shortly
            or lock the sending amount |
          enum:
            - INVALID_INPUT
            - END_USER_TERMS_VERSION_NOT_FOUND
            - MISSING_MANDATORY_USER_INFO
            - INVITATION_ALREADY_CLAIMED
            - INVITATIONS_NOT_CONFIGURED
            - INVALID_UMA_ADDRESS
            - INVITATION_CANCELLED
            - INVALID_RECEIVER
            - PARSE_PAYREQ_RESPONSE_ERROR
            - CERT_CHAIN_INVALID
            - CERT_CHAIN_EXPIRED
            - INVALID_PUBKEY_FORMAT
            - MISSING_REQUIRED_UMA_PARAMETERS
            - SENDER_NOT_ACCEPTED
            - AMOUNT_OUT_OF_RANGE
            - INVALID_CURRENCY
            - INVALID_TIMESTAMP
            - INVALID_NONCE
            - INVALID_REQUEST_FORMAT
            - INVALID_BANK_ACCOUNT
            - SELF_PAYMENT
            - PARSE_LNURLP_RESPONSE_ERROR
            - INVALID_AMOUNT
            - WEBHOOK_ENDPOINT_NOT_SET
            - WEBHOOK_DELIVERY_ERROR
            - LOW_QUALITY
            - DATA_MISMATCH
            - EXPIRED
            - SUSPECTED_FRAUD
            - UNSUITABLE_DOCUMENT
            - INCOMPLETE
            - EMAIL_OTP_CREDENTIAL_ALREADY_EXISTS
            - SMS_OTP_CREDENTIAL_ALREADY_EXISTS
            - PASSKEY_CREDENTIAL_ALREADY_EXISTS
            - AUTH_CREDENTIAL_VERIFICATION_REQUIRED
            - AUTH_CREDENTIAL_VERIFICATION_EXPIRED
            - STABLECOIN_PROVIDER_ACCOUNT_INVALID
            - STABLECOIN_PROVIDER_ACCOUNT_REVOKED
            - STABLECOIN_PROVIDER_ACCOUNT_SELECTION_REQUIRED
            - STORED_CARD_VERIFICATION_FAILED
            - CARDHOLDER_KYC_NOT_APPROVED
            - ACCOUNTHOLDER_AGREEMENT_NOT_ACCEPTED
            - CARDHOLDER_AGREEMENT_NOT_ACCEPTED
            - TRANSACTION_SIZE_LIMIT_EXCEEDED
            - EXTERNAL_ACCOUNT_VERIFICATION_REQUIRED
            - INSUFFICIENT_FUNDS
            - QUOTE_EXPIRED
            - QUOTE_RATE_UNAVAILABLE
            - STABLECOIN_AMOUNT_NOT_REPRESENTABLE
            - STABLECOIN_BURN_SOURCE_NOT_SUPPORTED
            - STABLECOIN_EXTERNAL_ACCOUNT_LINK_FAILED
            - STABLECOIN_EXTERNAL_ACCOUNT_LINK_METHOD_REQUIRED
            - STABLECOIN_EXTERNAL_ACCOUNT_NOT_LINKED
            - STABLECOIN_EXTERNAL_ACCOUNT_NOT_SUPPORTED
            - STABLECOIN_EXTERNAL_ACCOUNT_PROVIDER_LINK_FAILED
            - STABLECOIN_EXTERNAL_ACCOUNT_PROVIDER_LINK_REQUIRED
            - STABLECOIN_GRID_OPERATIONS_NOT_ENABLED
            - STABLECOIN_NOT_PROVISIONED
            - STABLECOIN_OPERATION_NOT_SUPPORTED
            - STABLECOIN_PROVIDER_ERROR
            - STABLECOIN_PROVIDER_SOURCE_NOT_LINKED
            - STABLECOIN_VERIFICATION_FAILED
            - DOCUMENTS_REQUIRED
            - EXACT_AMOUNT_UNAVAILABLE
        reason:
          type: string
          description: Error message
        details:
          type: object
          description: >-
            Additional error details. Shape varies by `code`. For
            field-validation errors on submit endpoints (e.g. `POST /customers`,
            `PATCH /customers/{id}`), `details.errors[]` enumerates every
            invalid field so platforms can render form-field-level UX for the
            entire request in a single round-trip.
          properties:
            errors:
              type: array
              description: >-
                One entry per invalid field. Present on field-validation errors
                from submit endpoints.
              items:
                $ref: '#/components/schemas/FieldError'
            missingRequirements:
              type: array
              description: >-
                The requirement ID of each required document that the quote
                request did not supply. Present on `DOCUMENTS_REQUIRED`.
              items:
                $ref: '#/components/schemas/PaymentDocumentRequirementId'
            refusalReason:
              $ref: '#/components/schemas/RefusalReason'
            missingFields:
              type: array
              description: >-
                Each customer field the request needs but the customer record
                lacks, named as in `CustomerInfoFieldName` (for example
                `PHONE_NUMBER`). Present with refusal reason
                `CARDHOLDER_INFO_MISSING`. Grid may name fields not yet listed
                there.
              items:
                type: string
                example: PHONE_NUMBER
          additionalProperties: true
    Error401:
      type: object
      required:
        - reason
        - code
      properties:
        code:
          type: string
          description: >
            | Error Code | Description |

            |------------|-------------|

            | UNAUTHORIZED | Issue with API credentials |

            | INVALID_SIGNATURE | Signature header is invalid |

            | WALLET_SIGNATURE_MISSING | The `Grid-Wallet-Signature` header is
            required for this Embedded Wallet action but was not supplied |

            | WALLET_SIGNATURE_MALFORMED | The `Grid-Wallet-Signature` header
            could not be parsed (bad encoding, structure, or fields) |

            | WALLET_SIGNATURE_BODY_MISMATCH | The `Grid-Wallet-Signature` was
            computed over a different request body than the one received |

            | WALLET_SIGNATURE_INVALID | The `Grid-Wallet-Signature` failed
            cryptographic verification against the registered credential |

            | REQUEST_ID_MISSING | The `Request-Id` header is required on the
            signed retry but was not supplied (paired with
            `Grid-Wallet-Signature`) |
          enum:
            - UNAUTHORIZED
            - INVALID_SIGNATURE
            - WALLET_SIGNATURE_MISSING
            - WALLET_SIGNATURE_MALFORMED
            - WALLET_SIGNATURE_BODY_MISMATCH
            - WALLET_SIGNATURE_INVALID
            - REQUEST_ID_MISSING
        reason:
          type: string
          description: Error message
        details:
          type: object
          description: Additional error details
          additionalProperties: true
    Error404:
      type: object
      required:
        - reason
        - code
      properties:
        code:
          type: string
          description: >
            | Error Code | Description |

            |------------|-------------|

            | TRANSACTION_NOT_FOUND | Transaction not found |

            | INVITATION_NOT_FOUND | Invitation not found |

            | USER_NOT_FOUND | Customer not found |

            | QUOTE_NOT_FOUND | Quote not found |

            | LOOKUP_REQUEST_NOT_FOUND | Lookup request not found |

            | TOKEN_NOT_FOUND | Token not found |

            | BULK_UPLOAD_JOB_NOT_FOUND | Bulk upload job not found |

            | REFERENCE_NOT_FOUND | Reference not found |

            | UMA_NOT_FOUND | The UMA address is well-formed but no receiver
            exists at the counterparty VASP |

            | STABLECOIN_PROVIDER_ACCOUNT_NOT_FOUND | Stablecoin provider
            account link not found |

            | ACCOUNT_NOT_FOUND | Account not found |

            | AUTH_METHOD_NOT_FOUND | Authentication credential not found |

            | CUSTOMER_NOT_FOUND | Customer not found |

            | DOCUMENT_HOLDER_NOT_FOUND | Document holder not found |

            | NOT_FOUND | The requested resource was not found |

            | PAYMENT_URL_NOT_FOUND | Payment URL not found |

            | PLATFORM_NOT_FOUND | Platform not found |

            | REQUEST_NOT_FOUND | Pending request not found |

            | SESSION_NOT_FOUND | Session not found |

            | STABLECOIN_EXTERNAL_ACCOUNT_NOT_FOUND | Stablecoin external
            account not found |

            | STABLECOIN_NOT_FOUND | Stablecoin not found |

            | STABLECOIN_OPERATION_NOT_FOUND | Stablecoin operation not found |

            | VERIFICATION_NOT_FOUND | Verification not found |

            | PAYMENT_DOCUMENT_NOT_FOUND | Payment document not found |
          enum:
            - TRANSACTION_NOT_FOUND
            - INVITATION_NOT_FOUND
            - USER_NOT_FOUND
            - QUOTE_NOT_FOUND
            - LOOKUP_REQUEST_NOT_FOUND
            - TOKEN_NOT_FOUND
            - BULK_UPLOAD_JOB_NOT_FOUND
            - REFERENCE_NOT_FOUND
            - UMA_NOT_FOUND
            - STABLECOIN_PROVIDER_ACCOUNT_NOT_FOUND
            - ACCOUNT_NOT_FOUND
            - AUTH_METHOD_NOT_FOUND
            - CUSTOMER_NOT_FOUND
            - DOCUMENT_HOLDER_NOT_FOUND
            - NOT_FOUND
            - PAYMENT_URL_NOT_FOUND
            - PLATFORM_NOT_FOUND
            - REQUEST_NOT_FOUND
            - SESSION_NOT_FOUND
            - STABLECOIN_EXTERNAL_ACCOUNT_NOT_FOUND
            - STABLECOIN_NOT_FOUND
            - STABLECOIN_OPERATION_NOT_FOUND
            - VERIFICATION_NOT_FOUND
            - PAYMENT_DOCUMENT_NOT_FOUND
        reason:
          type: string
          description: Error message
        details:
          type: object
          description: Additional error details
          additionalProperties: true
    Error409:
      type: object
      required:
        - reason
        - code
      properties:
        code:
          type: string
          description: >
            | Error Code | Description |

            |------------|-------------|

            | TRANSACTION_NOT_PENDING_PLATFORM_APPROVAL | Transaction is not
            pending platform approval |

            | TRANSACTION_NOT_CANCELLABLE | Transaction has already settled or
            is otherwise past the point where it can be cancelled |

            | UMA_ADDRESS_EXISTS | UMA address already exists |

            | EMAIL_OTP_EMAIL_ALREADY_EXISTS | Email address is already
            associated with an EMAIL_OTP credential |

            | PASSKEY_ALREADY_ENROLLED | The customer already has the most
            passkeys allowed (two). Delete one before enrolling another |

            | SCA_SESSION_REQUIRED | The customer's Strong Customer
            Authentication login session is missing or expired. Re-authenticate
            the customer, then retry the request. Distinct from a `401`, which
            means the platform's own API credentials were rejected |

            | BENEFICIARY_NOT_TRUSTED | The external account must be a trusted
            beneficiary before it can be used here. Trust it first via `POST
            /customers/external-accounts/{externalAccountId}/trust` (and its
            `/confirm`), then retry |

            | BENEFICIARY_TRUSTED | The external account is currently a trusted
            beneficiary, so it cannot be deleted. Untrust it first via `POST
            /customers/external-accounts/{externalAccountId}/untrust` (and its
            `/confirm`), then delete |

            | BANK_ACCOUNT_VALIDATION_PENDING | The US bank account on this
            request is still being validated. Grid verifies a newly added ACH
            account by sending a micro-entry and waiting out the return window,
            which takes a few banking days. The account is not rejected; retry
            once validation completes. A permanently failed account returns `400
            INVALID_BANK_ACCOUNT` instead |

            | INVALID_STATE_TRANSITION | The requested card `status` transition
            is not one of `ACTIVE ⇄ FROZEN` or `ACTIVE \| FROZEN → CLOSED`, or
            the card cannot be unfrozen by the platform because Grid froze it
            for review, it was frozen as `COMPROMISED`, or its customer is not
            `ACTIVE` |

            | CARD_ALREADY_CLOSED | `status: CLOSED` was requested for a card
            that is already `CLOSED` |

            | CARD_NOT_MUTABLE | The card is `CLOSED`, so it can no longer be
            mutated |

            | PIN_CHANGE_REQUIRED | The card's PIN unblock allowance is consumed
            for seven days. Change the PIN to recover sooner.
            `details.pinUnblockAvailableAt` gives the next allowed unblock time
            |

            | AGENT_CARD_EXISTS | The agent already holds a card that is not
            `CLOSED`, so it cannot issue another. Close that card first |

            | PURCHASE_CARD_LIMIT_REACHED | The agent already holds the most
            open purchase cards allowed, counting purchase cards awaiting
            approval. Use or close one first |

            | CARD_LIMIT_REACHED | The platform has reached the maximum number
            of live cards it may hold, or the cardholder already holds a card
            and the platform is limited to one per cardholder. Closing a card
            frees its slot; contact Lightspark to raise the limit |

            | STABLECOIN_GRID_ENABLEMENT_NOT_REQUESTABLE | Grid enablement can
            only be requested while the stablecoin is `NOT_ENABLED` (a repeat
            request while already `PENDING_APPROVAL` succeeds). `ENABLING`,
            `ENABLED` and `DISABLED` are driven by Lightspark and cannot be
            requested |

            | NOT_YET_AVAILABLE | The request is valid, but its result is not
            available yet because the data it depends on could still change.
            Retry later. `reason` says what is outstanding. For balance changes,
            card settlement for a window boundary has not closed |

            | CONFLICT | Generic resource-state conflict. Returned, for example,
            when `platformCustomerId` on a customer create call collides with an
            existing active customer on the same platform. When the cardholder
            already holds the one card the platform allows,
            `details.refusalReason` is `CARDHOLDER_HOLDS_CARD` |

            | DOCUMENT_ALREADY_EXISTS | A document of this type already exists
            for the holder; replace it with PUT |

            | DUPLICATE_EXTERNAL_ACCOUNT | The `platformAccountId` is already
            used, or, without one, the wallet is already registered. When the
            conflicting account belongs to your platform,
            `details.externalAccountId` and `details.platformAccountId` identify
            it; otherwise `details` is omitted |

            | DUPLICATE_PAY_REQUEST | A pay request with this idempotency key
            already exists |

            | OPERATION_IN_PROGRESS | A conflicting Embedded Wallet operation is
            still in progress |

            | SMS_OTP_PHONE_NUMBER_ALREADY_EXISTS | The phone number is already
            associated with an SMS_OTP credential |

            | STABLECOIN_SYMBOL_ALREADY_EXISTS | A stablecoin with this symbol
            is already registered |

            | STABLECOIN_TOKEN_IDENTIFIER_ALREADY_EXISTS | A stablecoin with
            this token identifier is already registered |

            | WALLET_NOT_PROVISIONED | The embedded wallet has not been
            provisioned |

            | PAYMENT_DOCUMENT_ALREADY_USED | The payment document is already
            attached to a quote. A document can be used on one quote only, so
            upload the file again to use it on another quote |

            | INVOICE_ALREADY_USED | Another quote for the Lightning invoice can
            still be executed or funded, or was executed. An invoice has one
            live quote at a time; ask the recipient for a new one, or retry once
            Grid has closed the earlier quote as expired |
          enum:
            - TRANSACTION_NOT_PENDING_PLATFORM_APPROVAL
            - TRANSACTION_NOT_CANCELLABLE
            - UMA_ADDRESS_EXISTS
            - EMAIL_OTP_EMAIL_ALREADY_EXISTS
            - PASSKEY_ALREADY_ENROLLED
            - SCA_SESSION_REQUIRED
            - BENEFICIARY_NOT_TRUSTED
            - BENEFICIARY_TRUSTED
            - BANK_ACCOUNT_VALIDATION_PENDING
            - INVALID_STATE_TRANSITION
            - CARD_ALREADY_CLOSED
            - CARD_NOT_MUTABLE
            - PIN_CHANGE_REQUIRED
            - AGENT_CARD_EXISTS
            - PURCHASE_CARD_LIMIT_REACHED
            - CARD_LIMIT_REACHED
            - STABLECOIN_GRID_ENABLEMENT_NOT_REQUESTABLE
            - NOT_YET_AVAILABLE
            - CONFLICT
            - DOCUMENT_ALREADY_EXISTS
            - DUPLICATE_EXTERNAL_ACCOUNT
            - DUPLICATE_PAY_REQUEST
            - OPERATION_IN_PROGRESS
            - SMS_OTP_PHONE_NUMBER_ALREADY_EXISTS
            - STABLECOIN_SYMBOL_ALREADY_EXISTS
            - STABLECOIN_TOKEN_IDENTIFIER_ALREADY_EXISTS
            - WALLET_NOT_PROVISIONED
            - PAYMENT_DOCUMENT_ALREADY_USED
            - INVOICE_ALREADY_USED
        reason:
          type: string
          description: Error message
        details:
          type: object
          description: Additional error details
          additionalProperties: true
    Error500:
      type: object
      required:
        - reason
        - code
      properties:
        code:
          type: string
          description: |
            | Error Code | Description |
            |------------|-------------|
            | GRID_SWITCH_ERROR | Grid switch error |
            | INTERNAL_ERROR | Internal server or UMA error |
          enum:
            - GRID_SWITCH_ERROR
            - INTERNAL_ERROR
        reason:
          type: string
          description: Error message
        details:
          type: object
          description: Additional error details
          additionalProperties: true
    Error501:
      type: object
      required:
        - reason
        - code
      properties:
        code:
          type: string
          description: >
            | Error Code | Description |

            |------------|-------------|

            | UNRECOGNIZED_MANDATORY_PAYEE_DATA_KEY | Unrecognized mandatory
            payee data key |

            | NOT_IMPLEMENTED | Feature not implemented |

            | UNRECOGNIZED_MANDATORY_COUNTERPARTY_DATA_KEY | The counterparty
            requires a data key Grid does not recognise |
          enum:
            - UNRECOGNIZED_MANDATORY_PAYEE_DATA_KEY
            - NOT_IMPLEMENTED
            - UNRECOGNIZED_MANDATORY_COUNTERPARTY_DATA_KEY
        reason:
          type: string
          description: Error message
        details:
          type: object
          description: Additional error details
          additionalProperties: true
    CardUpdateStatus:
      type: string
      enum:
        - ACTIVE
        - FROZEN
        - CLOSED
      description: >-
        Target status for the card. Permitted transitions are `ACTIVE ⇄ FROZEN`,
        `PENDING_AUTH → ACTIVE | FROZEN`, and `ACTIVE | PENDING_AUTH | FROZEN →
        CLOSED`. Activation requires completed delegated signing authorization.
        `CLOSED` is terminal and irreversible; once closed, the card stays in
        the system for audit and reconciliation but cannot transact again.
      example: FROZEN
    CardUpdateSubstatus:
      type: string
      enum:
        - LOST
        - COMPROMISED
        - DAMAGED
        - END_USER_REQUEST
        - ISSUER_REQUEST
        - NOT_ACTIVE
        - SUSPICIOUS_ACTIVITY
        - INTERNAL_REVIEW
        - EXPIRED
        - UNDELIVERABLE
        - OTHER
      description: >-
        Why the card is moving, in the card issuer's vocabulary. Required
        whenever `status` is supplied, and forwarded to the issuer. Pick `OTHER`
        when none of the named values fit and say why in `reason`.
      example: SUSPICIOUS_ACTIVITY
    CardStatus:
      type: string
      enum:
        - PENDING_KYC
        - PROCESSING
        - PENDING_AUTH
        - ACTIVE
        - FROZEN
        - CLOSED
      description: >
        Lifecycle status of a card.


        | Status | Description |

        |-------|-------------|

        | `PENDING_KYC` | The cardholder has not yet completed KYC. Cards in
        this status cannot transact. |

        | `PROCESSING` | The card has been requested and is being provisioned
        with the issuer. |

        | `PENDING_AUTH` | The issuer has provisioned the card, but its USDB
        Embedded Wallet funding source lacks an active delegated signing key.
        Complete `POST /auth/delegated-keys` before using the card. |

        | `ACTIVE` | The card is live and can authorize transactions. |

        | `FROZEN` | The card is temporarily disabled by the platform or by
        Grid. New authorizations are declined with `cardDeclinedReason:
        CARD_NOT_ACTIVE`. Existing settlements and refunds continue to
        reconcile. A card Grid froze for review, or one frozen as `COMPROMISED`,
        cannot be unfrozen by the platform. |

        | `CLOSED` | The card is permanently closed. Terminal, irreversible
        status. |
    CardStatusReason:
      type: string
      enum:
        - DELEGATION_REQUIRED
        - ISSUER_REJECTED
        - CLOSED_BY_PLATFORM
        - CLOSED_BY_GRID
      description: >
        Reason a card reached a terminal or non-active status. Present on

        `PENDING_AUTH` and `CLOSED` cards, and on cards that fail provisioning
        before reaching

        `ACTIVE`.


        | Reason | Description |

        |--------|-------------|

        | `DELEGATION_REQUIRED` | The card funding source has no usable
        delegated signing key. Present while the card is `PENDING_AUTH`. |

        | `ISSUER_REJECTED` | The card issuer rejected provisioning during
        `PROCESSING`. |

        | `CLOSED_BY_PLATFORM` | The card was closed via `PATCH /cards/{id}`
        (`status: CLOSED`) by the platform. |

        | `CLOSED_BY_GRID` | The card was closed by Grid (e.g. compliance or
        risk action). |
    CardBrand:
      type: string
      enum:
        - VISA
        - MASTERCARD
      description: |
        Card network brand. Read-only — determined by Grid when the card is
        provisioned with the issuer.
    CardForm:
      type: string
      enum:
        - VIRTUAL
      description: |
        Physical form factor of the card. Only `VIRTUAL` is supported in v1;
        `PHYSICAL` will be added in a later release.
    CardPinStatus:
      type: string
      enum:
        - NOT_SET
        - OK
        - BLOCKED
      example: OK
      description: >
        State of the card's PIN. On the Card resource, this is the last known
        status

        and is present whenever PIN management is supported. An absent value
        means

        PIN management is unavailable for this card; it does not mean `NOT_SET`.

        Use `GET /cards/{id}` to retrieve `pinStatus`.


        | Status | Description |

        |--------|-------------|

        | `NOT_SET` | No PIN has been set on the card. PIN verification is not
        enabled. Set one with `POST /cards/{id}/set-pin` or the hosted form
        returned by `GET /cards/{id}/pin-entry-url`. |

        | `OK` | A PIN is set and usable. |

        | `BLOCKED` | The PIN was entered incorrectly three consecutive times
        and is refused until cleared with `POST /cards/{id}/pin/unblock`, or
        replaced with `POST /cards/{id}/set-pin`. |
    CardCapabilities:
      type: object
      description: Actions supported by the card program associated with this resource.
      required:
        - supportsVelocityLimits
        - supports3dSecurePassword
        - supportsPanReveal
        - supportsDigitalWalletTokenization
      properties:
        supportsVelocityLimits:
          type: boolean
          description: >-
            Whether this card program supports platform-managed limits through
            `/card-velocity-limits`. Supported where Grid makes authorization
            decisions; false where the issuer makes them. Amounts use the card's
            currency, regardless of its funding source.
          example: true
        supports3dSecurePassword:
          type: boolean
          description: >-
            Whether cards in this program accept a caller-supplied
            `threeDSecurePassword`.
          example: false
        supportsPanReveal:
          type: boolean
          description: >-
            Whether cards in this program can be revealed through `POST
            /cards/{id}/reveal`.
          example: true
        supportsDigitalWalletTokenization:
          type: boolean
          description: >-
            Whether cards in this program can be added to Apple Pay, Google Pay,
            or Samsung Pay from your app through `POST /cards/{id}/tokenize`.
            Manual entry into a wallet works regardless of this flag.
          example: true
    CardMerchant:
      type: object
      required:
        - descriptor
      properties:
        descriptor:
          type: string
          description: >-
            Merchant descriptor string captured from the card network at
            authorization time. On the sandbox simulate endpoints, where this is
            supplied rather than reported, it must be 1–25 characters — the
            width of the card network's acceptor-name field.
          example: BLUE BOTTLE COFFEE SF
        mcc:
          type: string
          description: Merchant Category Code (ISO 18245) — four-digit numeric string.
          example: '5814'
        city:
          type: string
          description: Merchant city as reported by the card network, when present.
          example: San Francisco
        state:
          type: string
          description: >-
            Merchant state or region as reported by the card network, when
            present.
          example: CA
        country:
          type: string
          description: Two-letter ISO 3166-1 alpha-2 country code of the merchant.
          example: US
    FieldError:
      type: object
      required:
        - field
      description: >-
        One field-level validation failure. Field-validation errors on submit
        endpoints (e.g. `POST /customers`, `PATCH /customers/{id}`) emit an
        array of these under `details.errors` so platforms can render
        form-field-level UX for every failure in a single round-trip.
      properties:
        field:
          type: string
          description: Dot-notation path to the offending field.
          example: identifier
        constraint:
          $ref: '#/components/schemas/FieldConstraint'
        message:
          type: string
          description: Human-readable explanation of what's wrong with this field.
          example: Value is not one of the allowed enum members.
    PaymentDocumentRequirementId:
      type: string
      description: >-
        A stable identifier for one required document within a purpose's
        requirements. The same ID means the same requirement across quotes. It
        is separate from `PaymentDocumentType`. The requirement ID names the
        document to supply, and the document type names what a file is. The two
        differ where a requirement accepts alternatives. For example, a file
        declared as either `PURCHASE_ORDER` or `DELIVERY_SLIP` fills the
        `SUPPORTING_PROOF` requirement.


        [Supporting
        Documents](https://docs.lightspark.com/payouts-and-b2b/payment-flow/send-payment#supporting-documents)
        lists the IDs each purpose requires.


        Treat the ID as an opaque value, not a member of a fixed list. Grid may
        add new IDs as requirements change.
      example: SUPPORTING_PROOF
    RefusalReason:
      type: string
      description: >
        Why Grid refused the request, as `details.refusalReason`. Several
        refusals

        share one `code`, and `reason` is a message that may be reworded, so
        branch

        on this value rather than on `reason`. Treat it as an open set, not a
        fixed

        list: Grid may add values, and an unknown one is a refusal without a
        known

        cause.


        | Refusal reason | Status | Description |

        |----------------|--------|-------------|

        | `AGENT_API_DISABLED` | 403 | The agent API is not enabled for the
        platform |

        | `AGENT_CUSTOMER_INACTIVE` | 403 | The agent's customer is not active |

        | `AGENT_INACTIVE` | 403 | The agent is paused or deleted |

        | `AGENT_NO_DELEGATED_KEY` | 403 | The agent holds no active delegated
        key for the source wallet |

        | `AGENT_PERMISSION_REQUIRED` | 403 | The agent's policy lacks a
        permission this call needs. `details.permission` names it |

        | `AGENT_ACCOUNT_NOT_ALLOWED` | 403 | The agent's policy does not allow
        the source account or funding source |

        | `AGENT_DEPOSIT_ACCOUNT_NOT_ALLOWED` | 403 | The agent's policy does
        not allow deposits to this account |

        | `AGENT_POLICY_DENIED` | 403 | The agent's policy denied executing the
        quote. `details.policyDenialReason` says which rule |

        | `AGENT_QUOTE_HELD` | 403 | The quote cannot be sent and is held for
        manual follow-up |

        | `AGENT_CARDS_DISABLED` | 403 | Agent cards are not enabled for the
        platform |

        | `AGENT_CARDS_CUSTOMER_NOT_VERIFIED` | 403 | Agent cards need a
        verified individual customer |

        | `AGENT_CARD_HANDOVER_DISABLED` | 403 | Handing an agent's card over to
        its customer is not enabled for the platform |

        | `AGENT_PURCHASE_CARDS_DISABLED` | 403 | Agent purchase cards are not
        enabled for the platform |

        | `AGENT_RECURRING_PURCHASE_CARDS_DISABLED` | 403 | Agent recurring
        purchase cards are not enabled for the platform |

        | `AGENT_PURCHASE_CARD_POLICY_DENIED` | 403 | The agent's policy denied
        the purchase card. `details.policyDenialReason` says which rule |

        | `STORED_CARDS_DISABLED` | 403 | Stored cards are not enabled for the
        platform |

        | `CARDS_DISABLED` | 403 | Cards are not enabled for the platform |

        | `CARDHOLDER_INFO_MISSING` | 400 | The cardholder record lacks fields a
        card needs. `details.missingFields` lists them; supply them through the
        customers API |

        | `CARDHOLDER_BANK_ACCOUNT_NOT_OPEN` | 400 | The cardholder's USD bank
        account is not open yet, so no card can be issued until it is |

        | `CARDHOLDER_COUNTRY_NOT_SUPPORTED` | 400 | The cardholder's address is
        outside the United States, where agent cards are not offered yet |

        | `CARDHOLDER_HOLDS_CARD` | 409 | The cardholder already holds a card
        and the platform allows one per cardholder. Close it before issuing
        another |

        | `INVOICE_SUB_SAT_AMOUNT` | 400 | The Lightning invoice's amount is not
        a whole number of satoshis |

        | `INVOICE_FUNDS_DEPOSIT` | 400 | The Lightning invoice was issued by
        Lightspark to fund a deposit and cannot be paid with a send |

        | `INVOICE_FUNDS_OWN_DEPOSIT` | 400 | The Lightning invoice funds a
        deposit of the sender's own. Quote a transfer between the customer's
        accounts instead |
      example: AGENT_POLICY_DENIED
    FieldConstraint:
      type: object
      description: >-
        Machine-readable validator hint accompanying a 400 `INVALID_INPUT`
        error. Consumers use it to drive form UI (input types, dropdowns,
        masking, length limits) and to pre-validate the field client-side before
        re-submitting. Fields are additive.
      properties:
        format:
          type: string
          description: >-
            Named format the value must satisfy — HTML5 input type names
            (`email`, `tel`, `url`, `date`, ...) or semantic slugs
            (`iso3166-1-alpha-2`, `bcp47-language-tag`, `us-ssn`, `e.164`).
          example: email
        pattern:
          type: string
          description: Regular expression the value must match (JavaScript-flavor).
          example: ^\d{5}(-\d{4})?$
        enum:
          type: array
          items:
            type: string
          description: Allowed values when the field is drawn from a fixed set.
          example:
            - SSN
            - ITIN
            - NON_US_TAX_ID
        minLength:
          type: integer
          description: Minimum length in characters.
          example: 1
        maxLength:
          type: integer
          description: Maximum length in characters.
          example: 500
  securitySchemes:
    BasicAuth:
      type: http
      scheme: basic
      description: >-
        API token authentication using format `<api token id>:<api client
        secret>`
    AgentAuth:
      type: http
      scheme: bearer
      description: >-
        Bearer token authentication for agent-scoped endpoints. The token is the
        `accessToken` returned when redeeming a device code via `POST
        /agents/device-codes/redeem`. Agent credentials are user-scoped: all
        requests are automatically bound to the agent's associated customer and
        subject to the agent's policy.

````

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