> ## Documentation Index > Fetch the complete documentation index at: https://docs.lerian.studio/llms.txt > Use this file to discover all available pages before exploring further. # Orchestrate Core operation > Resolves participant routing, consumes quota when indirect, records settlement tracking, attributes fees/commissions, persists saga state, and emits Core domain events. ## OpenAPI ````yaml en/openapi/v3-current/spi-core.yaml post /api/v1/core/operations/ openapi: 3.1.0 info: contact: email: contact@lerian.studio name: Lerian Studio url: https://lerian.studio description: >- Core service of Lerian SPI: MED (Mecanismo Especial de Devolução) dispute cases, PIX participant lifecycle by ISPB, payment routing resolution, and cross-context Core operation orchestration over the Brazilian Instant Payment System (SPI/Pix). license: name: Lerian Studio General License title: Lerian SPI — Core API version: 1.0.0 servers: - url: https://spi.sandbox.lerian.net security: [] tags: - description: >- MED (Mecanismo Especial de Devolução) dispute cases: open, list, retrieve, analyze, resolve, close, cancel, and attach evidence. name: MED - description: >- PIX participant lifecycle: register, list, retrieve, suspend, activate, and offboard by ISPB. name: Participants - description: Payment routing resolution across participants. name: Routing - description: Core operation orchestration across the rail's bounded contexts. name: Operations paths: /api/v1/core/operations/: post: tags: - Operations summary: Orchestrate Core operation description: >- Resolves participant routing, consumes quota when indirect, records settlement tracking, attributes fees/commissions, persists saga state, and emits Core domain events. operationId: orchestrateOperation parameters: - description: Idempotency key, max 255 characters in: header name: Idempotency-Key schema: description: Idempotency key, max 255 characters type: string requestBody: content: application/json: schema: $ref: '#/components/schemas/OrchestrateOperationRequest' required: true responses: '200': content: application/json: schema: $ref: '#/components/schemas/OrchestrateOperationResponse' description: OK default: content: application/problem+json: schema: $ref: '#/components/schemas/Detail' description: Error security: - BearerAuth: [] components: schemas: OrchestrateOperationRequest: additionalProperties: false properties: amount: description: >- Transaction amount in centavos (BRL minor units); must be greater than zero. examples: - 15000 format: int64 type: integer commissionAmount: description: Commission amount in centavos (BRL minor units); zero or positive. examples: - 10 format: int64 type: integer commissionRecipientISPB: description: >- ISPB of the participant receiving the commission (8 numeric digits); optional. examples: - '87654321' type: string endToEndId: description: >- PIX EndToEndID of the transaction, format E{ISPB}{YYYYMMDD}{uniqueID}. examples: - E12345678202604281234ABCDE123456 type: string feeAmount: description: Fee amount in centavos (BRL minor units); zero or positive. examples: - 25 format: int64 type: integer feePayerISPB: description: >- ISPB of the participant charged the fee (8 numeric digits); optional. examples: - '12345678' type: string operationId: description: >- Caller-assigned idempotency/business identifier for the operation, max 128 characters. examples: - op-20260428-0001 type: string senderISPB: description: ISPB of the sending participant, exactly 8 numeric digits. examples: - '12345678' type: string required: - operationId - endToEndId - senderISPB - amount - feeAmount - commissionAmount type: object OrchestrateOperationResponse: additionalProperties: false properties: commissionAmount: description: Commission amount applied, in centavos (BRL minor units). examples: - 10 format: int64 type: integer commissionRecipientISPB: description: >- ISPB of the participant receiving the commission (8 numeric digits); omitted when no fee attribution applies. examples: - '87654321' type: string feeAmount: description: Fee amount applied, in centavos (BRL minor units). examples: - 25 format: int64 type: integer feeAttributionId: description: >- UUID of the fee attribution record; empty when no fee attribution was created. examples: - 550e8400-e29b-41d4-a716-446655440000 type: string feePayerISPB: description: >- ISPB of the participant charged the fee (8 numeric digits); omitted when no fee attribution applies. examples: - '12345678' type: string operationId: description: Caller-assigned identifier echoed from the request. examples: - op-20260428-0001 type: string routingDecision: $ref: '#/components/schemas/OperationRoutingDecisionResponse' description: >- Routing snapshot showing how the operation was directed through sponsor/indirect participants. sagaId: description: UUID of the orchestration saga coordinating the operation. examples: - 550e8400-e29b-41d4-a716-446655440000 type: string sagaStatus: description: Current state of the orchestration saga (e.g. COMPLETED). examples: - COMPLETED type: string settlementId: description: UUID of the settlement created for this operation. examples: - 550e8400-e29b-41d4-a716-446655440000 type: string settlementStatus: description: Current state of the settlement (e.g. PENDING). examples: - PENDING type: string required: - sagaId - operationId - sagaStatus - settlementId - settlementStatus - feeAttributionId - routingDecision - feeAmount - commissionAmount type: object Detail: additionalProperties: false properties: code: description: >- Stable, machine-readable domain error code scoped to the emitting service (format: -NNNN). examples: - ERR-0001 type: string detail: description: >- A human-readable explanation specific to this occurrence of the problem. examples: - Property foo is required but is missing. type: string errors: description: Optional list of individual error details items: $ref: '#/components/schemas/ErrorDetail' type: - array - 'null' instance: description: >- A URI reference that identifies the specific occurrence of the problem. examples: - https://example.com/error-log/abc123 format: uri type: string status: description: HTTP status code examples: - 400 format: int64 type: integer title: description: >- A short, human-readable summary of the problem type. This value should not change between occurrences of the error. examples: - Bad Request type: string type: default: about:blank description: A URI reference to human-readable documentation for the error. examples: - https://example.com/errors/example format: uri type: string type: object OperationRoutingDecisionResponse: additionalProperties: false properties: indirectISPB: description: >- ISPB of the indirect participant being routed through the sponsor (8 numeric digits); empty for direct participants. examples: - '12345678' type: string isDirect: description: >- True when the sender connects directly to BACEN; false when routed through a sponsor. examples: - false type: boolean quotaConsumed: description: >- Amount in centavos (BRL minor units) consumed from the indirect participant's quota for this operation. examples: - 15000 format: int64 type: integer sponsorISPB: description: >- ISPB of the sponsor participant routing the payment (8 numeric digits); empty for direct participants. examples: - '87654321' type: string required: - quotaConsumed - isDirect type: object ErrorDetail: additionalProperties: false properties: location: description: >- Where the error occurred, e.g. 'body.items[3].tags' or 'path.thing-id' type: string message: description: Error message text type: string value: description: The value at the given location type: object securitySchemes: BearerAuth: bearerFormat: JWT description: JWT bearer token issued by the identity provider. scheme: bearer type: http ````