> ## Documentation Index > Fetch the complete documentation index at: https://docs.endl.io/llms.txt > Use this file to discover all available pages before exploring further. # Get a card transaction > One card transaction. ## OpenAPI ````yaml api-reference/endl-cards-api.json GET /api/v0/cards/{customerId}/transactions/{transactionId} openapi: 3.1.0 info: title: Endl Cards API version: '0' description: >- Issue virtual cards to your customers: enrol the customer, fund the card balance, issue cards, show card details securely, and follow every transaction by webhook. Paths are under `/api/v0`. The key must carry the **`cards`** permission. **This API is not final yet** — see [what may still change](/api-reference/cards/introduction#not-final-yet). servers: - url: https://api-sandbox.endl.io description: Sandbox security: - apiKey: [] tags: - name: Enrolment - name: Cardholders - name: Cards - name: Card details - name: Transactions and balance - name: Deposits - name: Withdrawals paths: /api/v0/cards/{customerId}/transactions/{transactionId}: get: tags: - Transactions and balance summary: Get a card transaction description: One card transaction. parameters: - $ref: '#/components/parameters/ApiVersion' - $ref: '#/components/parameters/CustomerId' - $ref: '#/components/parameters/TransactionId' responses: '200': description: The card transaction. content: application/json: schema: $ref: '#/components/schemas/CardTransaction' example: transactionId: ctx_9pL3... cardId: crd_4fT9... cardholderId: cus_8Qw2... businessId: cus_1Xb7... type: purchase status: completed amount: amount: '42.99' currency: USD authorizedAmount: amount: '42.99' currency: USD originalAmount: amount: '39.50' currency: EUR merchant: name: ACME STORE city: Berlin country: DE mcc: '5411' category: Grocery declineReason: null relatedTransactionId: null fees: - type: transaction_fee amount: amount: '0.43' currency: USD authorizedAt: '2026-10-14T10:01:22Z' settledAt: '2026-10-15T02:10:00Z' updatedAt: '2026-10-15T02:10:00Z' '401': description: Missing or invalid API key. content: application/json: schema: $ref: '#/components/schemas/Error' '403': description: The API key lacks the `cards` permission. content: application/json: schema: $ref: '#/components/schemas/Error' '404': description: Customer or transaction not found. content: application/json: schema: $ref: '#/components/schemas/Error' components: parameters: ApiVersion: name: Api-Version in: header required: true description: >- The API version this request targets. `2026-09.1`. See [Versioning](/api-reference/versioning). schema: type: string pattern: ^\d{4}-\d{2}\.\d+$ default: 2026-09.1 example: 2026-09.1 CustomerId: name: customerId in: path required: true description: An individual, a business or an employee (`cus_`). schema: type: string example: cus_1Xb7... TransactionId: name: transactionId in: path required: true description: The card transaction (`ctx_`). schema: type: string example: ctx_9pL3... schemas: CardTransaction: type: object properties: transactionId: type: string example: ctx_9pL3... cardId: type: string cardholderId: type: string businessId: type: - string - 'null' type: type: string enum: - purchase - refund description: >- A refund is its own transaction with a positive amount; `relatedTransactionId` points to the purchase when known. status: type: string enum: - pending - completed - reversed - declined description: >- `pending` (authorised), `completed` (settled), `reversed`, `declined`. amount: allOf: - $ref: '#/components/schemas/Money' description: The current amount, in the card's currency. authorizedAmount: allOf: - $ref: '#/components/schemas/Money' description: The amount when it was authorised. originalAmount: allOf: - $ref: '#/components/schemas/Money' description: The amount in the merchant's currency. merchant: type: object properties: name: type: string city: type: string country: type: string mcc: type: string category: type: string declineReason: type: - object - 'null' description: >- `{ code, message }`. Codes: `insufficient_funds`, `limit_exceeded`, `card_frozen`, `card_canceled`, `card_inactive`, `merchant_not_allowed`, `fraud_suspected`, `other`. properties: code: type: string enum: - insufficient_funds - limit_exceeded - card_frozen - card_canceled - card_inactive - merchant_not_allowed - fraud_suspected - other message: type: string relatedTransactionId: type: - string - 'null' fees: type: array items: $ref: '#/components/schemas/Fee' description: Endl fees on this transaction. authorizedAt: type: string format: date-time settledAt: type: string format: date-time updatedAt: type: string format: date-time description: If you receive two copies, keep the one with the newest value. Error: type: object description: >- The standard Endl error body. `errors[].code` is an `ERRCRD_` code — **the code numbers are not final yet** — and `field` names the request field when one is at fault. properties: code: type: integer message: type: string status: type: string enum: - ERROR data: type: 'null' errors: type: array items: type: object properties: code: type: string message: type: string field: type: - string - 'null' Money: type: object required: - amount - currency description: A decimal string and a currency code. properties: amount: type: string description: Decimal string, e.g. `"42.99"`. example: '42.99' currency: type: string description: Currency code, e.g. `USD`. example: USD Fee: type: object description: >- An Endl fee. The `fees` shape is final; the fee **amounts** are not final yet. properties: type: type: string example: transaction_fee amount: $ref: '#/components/schemas/Money' securitySchemes: apiKey: type: apiKey in: header name: Api-Key description: Partner API key. Must carry the `cards` permission. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.