> ## Documentation Index > Fetch the complete documentation index at: https://docs.reap.global/llms.txt > Use this file to discover all available pages before exploring further. # Block card > Blocks a card. A block is the hard stop - a compromised card, a dispute, an account on hold - while freeze is the soft toggle a cardholder flips. A blocked card declines everything: online, in-store, and ATM. Blocking a frozen card keeps the freeze, so the card returns to `FROZEN` when the block lifts. Idempotent, and a block placed by Reap is never replaced: if the card already carries a block with `blockLiftable: false`, that reason stays and the card remains one only Reap support can unblock. ## OpenAPI ````yaml /api-reference/openapi.json post /cards/{id}/block openapi: 3.1.0 info: title: Reap API version: 1.0.0 description: Reap platform API servers: - url: https://sandbox.api.reap.global description: Sandbox - url: https://prod.api.reap.global description: Production security: - bearerAuth: [] tags: - name: Accounts - name: Activities - name: Card Designs - name: Card Shipments - name: Card Transactions - name: Cards - name: Companies - name: Crypto Deposits - name: Disputes - name: Fiat Deposits - name: Fraud Alerts - name: Policies - name: Simulation - name: Users - name: Virtual Asset Postings - name: Virtual Assets - name: Webhooks paths: /cards/{id}/block: post: tags: - Cards summary: Block card description: >- Blocks a card. A block is the hard stop - a compromised card, a dispute, an account on hold - while freeze is the soft toggle a cardholder flips. A blocked card declines everything: online, in-store, and ATM. Blocking a frozen card keeps the freeze, so the card returns to `FROZEN` when the block lifts. Idempotent, and a block placed by Reap is never replaced: if the card already carries a block with `blockLiftable: false`, that reason stays and the card remains one only Reap support can unblock. operationId: block_cards parameters: - name: id in: path required: true schema: type: string format: uuid - name: Reap-Version in: header required: true schema: type: string enum: - '2025-02-14' description: API version (YYYY-MM-DD) example: '2025-02-14' responses: '200': description: Card resource content: application/json: schema: $ref: '#/components/schemas/Card' '400': description: Card operation not allowed in current status content: application/json: schema: type: object properties: error: type: object properties: code: type: string const: CARD_OPERATION_NOT_ALLOWED message: type: string detail: anyOf: - type: object additionalProperties: {} - type: 'null' required: - code - message - detail required: - error title: CardOperationNotAllowedError '404': description: Card not found content: application/json: schema: type: object properties: error: type: object properties: code: type: string const: CARD_NOT_FOUND message: type: string detail: anyOf: - type: object additionalProperties: {} - type: 'null' required: - code - message - detail required: - error title: CardNotFoundError components: schemas: Card: type: object properties: id: type: string format: uuid description: Unique card identifier accountId: type: string format: uuid description: ID of the account the card belongs to userId: type: string format: uuid description: ID of the user the card belongs to type: type: string enum: - VIRTUAL - PHYSICAL description: Card type (`VIRTUAL` or `PHYSICAL`) example: VIRTUAL status: type: string enum: - ACTIVE - FROZEN - BLOCKED - EXPIRED description: Current card status example: ACTIVE blockReason: anyOf: - $ref: '#/components/schemas/CardBlockReason' title: CardBlockReason - type: 'null' description: Block reason details (only present when status is `BLOCKED`) blockLiftable: type: boolean description: >- Whether the current block can be lifted with the unblock endpoint. `false` for blocks that need Reap support, and for a card that holds no block. frozen: type: boolean description: >- Whether the card is frozen. A block hides a freeze from `status`, so a card that is `BLOCKED` with `frozen: true` returns to `FROZEN` once the block lifts. cardholderName: type: string description: Cardholder name displayed on card last4: type: string description: >- Last 4 digits of the card number. Use reveal endpoint for full details. 3dsChallengeMethod: type: string enum: - SMS - WEBHOOK description: 3DS challenge verification method example: SMS physicalCardStatus: anyOf: - type: string enum: - NOT_ORDERED - REQUESTED - IN_PRODUCTION - PRODUCTION_COMPLETED - IN_TRANSIT - OUT_FOR_DELIVERY - DELIVERED - ACTIVATED - CANCELED - DELIVERY_FAILED - EXCEPTION example: NOT_ORDERED - type: 'null' description: >- Physical lifecycle of the card (production + shipping + activation rollup). Defaults to `NOT_ORDERED` for newly created physical cards. `null` for virtual cards, which have no physical lifecycle. createdAt: type: string description: ISO 8601 timestamp of creation updatedAt: type: string description: ISO 8601 timestamp of last update required: - id - accountId - userId - type - status - blockReason - blockLiftable - frozen - cardholderName - last4 - 3dsChallengeMethod - physicalCardStatus - createdAt - updatedAt CardBlockReason: type: object properties: type: type: string enum: - CLIENT_REQUESTED - SUSPECTED_FRAUD_CVV - SUSPECTED_FRAUD_EXPIRY - SUSPECTED_FRAUD_PIN - FRAUD_ALERT_CONFIRMED - OTHER description: Machine-readable code for the block reason example: CLIENT_REQUESTED message: type: string description: Human-readable message for the block reason required: - type - message description: Card block reason details securitySchemes: bearerAuth: type: http scheme: bearer description: API key as Bearer token ````