openapi: 3.1.0 info: title: Mercoa Entities Transactions API description: 'The Mercoa REST API powers embedded accounts payable and accounts receivable workflows inside vertical SaaS platforms. This spec is a curated subset of the canonical Mercoa OpenAPI document (https://github.com/mercoa-finance/openapi). All requests authenticate with a Bearer token (API key or JWT) in the Authorization header. ' version: '1.0' contact: name: Mercoa url: https://docs.mercoa.com/ servers: - url: https://api.mercoa.com description: Production security: - bearerAuth: [] tags: - name: Transactions paths: /transactions: get: tags: - Transactions summary: List transactions responses: '200': description: Paginated transactions /transaction/{transactionId}: parameters: - name: transactionId in: path required: true schema: type: string get: tags: - Transactions summary: Get transaction responses: '200': description: Transaction components: securitySchemes: bearerAuth: type: http scheme: bearer bearerFormat: token description: 'Mercoa API key or JWT. Send as "Authorization: Bearer {token}". API keys are issued from the Mercoa Dashboard and are backend-only. JWTs scope access to an entity or entity group. '