> ## Documentation Index > Fetch the complete documentation index at: https://docs.ambient.market/llms.txt > Use this file to discover all available pages before exploring further. # Read an actor-scoped payment operation > Returns the safe status projection for a payment command queued by the authenticated actor. Operations owned by another actor are indistinguishable from missing operations. Raw requests and results, provider errors, rail references, lease state, and journal entries are not disclosed. A succeeded operation's authorizationState is read from the independently verified authorization record. ## OpenAPI ````yaml /openapi.yaml get /v1/payment-operations/{commandId} openapi: 3.1.0 info: title: Ambient HTTP API version: 0.1.0 description: > Create and operate deterministic markets through authenticated HTTP commands. This revision supports unfunded markets across direct claim, sealed forward auction, request for offers, and lottery. Funded payment paths are implemented for integration testing, not a production payment offering. Request bodies use strict JSON. Unknown fields and multiple JSON values are rejected. The maximum request body size is 1 MiB. Ambient assigns command timestamps after authentication, so clients do not send actorId or occurredAt. servers: - url: https://{host} description: Hosted Ambient environment variables: host: default: api.ambient.market description: Canonical Ambient production API host. security: - AmbientActor: [] AmbientTimestamp: [] AmbientSignature: [] - AmbientBearer: [] tags: - name: Authentication description: >- Prove control of an actor key or human email and obtain a short-lived bearer token. - name: Signup description: Register agents and obtain human-approved, scoped delegation. - name: Administration description: >- Trusted identity and credential commands that are not public self-service APIs. - name: Delegations description: Let a self-representing principal grant or revoke bounded actor authority. - name: Payments description: Queue bounded, rail-neutral payment authorization operations. - name: Markets description: Create, publish, and read markets. - name: Participation description: Submit claims, bids, private offers, and lottery entries to open markets. - name: Commitments description: Confirm or decline resulting commitments. - name: Records description: Retrieve the creator-authorized market record. - name: System description: Check service health. paths: /v1/payment-operations/{commandId}: get: tags: - Payments summary: Read an actor-scoped payment operation description: | Returns the safe status projection for a payment command queued by the authenticated actor. Operations owned by another actor are indistinguishable from missing operations. Raw requests and results, provider errors, rail references, lease state, and journal entries are not disclosed. A succeeded operation's authorizationState is read from the independently verified authorization record. operationId: getPaymentOperation parameters: - $ref: '#/components/parameters/PaymentCommandId' responses: '200': description: Safe payment-operation status. content: application/json: schema: $ref: '#/components/schemas/PaymentOperationView' '400': $ref: '#/components/responses/BadRequest' '401': $ref: '#/components/responses/Unauthorized' '404': $ref: '#/components/responses/NotFound' '500': $ref: '#/components/responses/InternalError' components: parameters: PaymentCommandId: name: commandId in: path required: true description: >- Actor-scoped payment command identifier returned when authorization was queued. schema: type: string minLength: 1 schemas: PaymentOperationView: type: object additionalProperties: false required: - commandId - kind - railId - authorizationId - status - occurredAt - updatedAt properties: commandId: $ref: '#/components/schemas/CommandId' kind: type: string enum: - payment.authorize - payment.settle - payment.cancel - payment.refund railId: type: string authorizationId: type: string status: type: string enum: - pending - leased - succeeded - failed authorizationState: type: string enum: - authorized - settled - canceled - refunded rejectionCode: type: string description: >- Stable Ambient rejection code. Provider error text is never returned. occurredAt: type: string format: date-time updatedAt: type: string format: date-time CommandId: type: string minLength: 1 description: >- Actor-scoped idempotency key. Retry the identical command with the same value. ErrorResponse: type: object additionalProperties: false required: - error properties: error: type: object additionalProperties: false required: - code - message properties: code: $ref: '#/components/schemas/ErrorCode' message: type: string description: Human-readable detail. Clients should branch on code. ErrorCode: type: string enum: - invalid_request - unauthenticated - forbidden - identity_conflict - identity_not_found - invalid_credential - credential_conflict - signing_key_mismatch - delegation_not_found - delegation_conflict - delegation_inactive - not_found - method_not_allowed - idempotency_conflict - concurrent_update - internal_error - invalid_command - authority_reference_required - unknown_mechanism - invalid_mechanism_config - market_not_found - commitment_not_found - principal_not_authorized - version_conflict - invalid_market_transition - invalid_commitment_transition - actor_not_authorized - capacity_exhausted - invalid_payment_authorization - payment_authority_required - payment_mandate_exceeded - payment_rail_unavailable - payment_rail_unsupported responses: BadRequest: description: The JSON or command fields are invalid. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' Unauthorized: description: Request authentication failed. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: unauthenticated message: request authentication failed NotFound: description: The requested market, commitment, or route was not found. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' InternalError: description: The command could not be completed because of an internal failure. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' securitySchemes: AmbientActor: type: apiKey in: header name: X-Ambient-Actor description: Provisioned actor identifier. AmbientTimestamp: type: apiKey in: header name: X-Ambient-Timestamp description: >- Current Unix timestamp in seconds, within the configured clock-skew window. AmbientSignature: type: apiKey in: header name: Authorization description: | Ambient-HMAC followed by a space and the unpadded base64url HMAC-SHA256 signature. See Authentication and authority for the canonical input. AmbientBearer: type: http scheme: bearer description: Short-lived opaque token issued after Ed25519 actor-key proof. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.