> ## 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. # Ownership history for one key, addressed by the key > The same history as the by-assignment route, addressed by the key sent as held, normalized exactly as the lookup normalizes it. It needs no live assignment, so the history of a removed key — the removal included — stays readable. Most recent first. A read: it changes nothing and takes no X-Idempotency. The key travels in the body because it is personal data; a malformed key is refused 422 JDC-0104 with a fixed sentence that never repeats it. ## OpenAPI ````yaml /en/openapi/v3-current/jd-courier.yaml post /v1/ownership/audit/lookup openapi: 3.1.0 info: description: >- The JD Courier API. Operators use it to manage the engines, the ownership map, the delivery modes and bypass of each rail, the retained messages, the SPB send journal and reconciliation. Engines use it to resolve the owner of a key, claim their Pix Automático recurrences and declare their Pix Automático payment legs. title: JD Courier API version: v1.0.0 servers: [] security: - BearerAuth: [] tags: - description: >- The engine registry: the cores that consume the JD channel through the Courier, each with its participant set name: Engines - description: 'The ownership map: which engine owns each key. Every change is audited.' name: ownership - description: >- The rails: what each declares about itself, its state per tenant, and the bypass declaration name: channels - description: >- The engines' side of the ownership map: resolution for the on-us gate, authoritative and never advisory, the claim of a Pix Automático recurrence the engine holds, and the declaration of a payment leg it holds. name: ownership-query - description: >- The durable message store: redelivery on demand, without asking the vendor again name: ledger - description: >- Count reconciliation per rail: E(m) = C(m) + T(m) + R(m), the sequence gaps it saw, and the sends whose return leg never arrived name: assurance - description: >- The SPB send journal: every send, written before it leaves, and the sends whose outcome is unknown. A by-hand close records an operator's finding and never resends. name: send-journal - description: >- Per-(tenant, channel) state an operator acts on: lifting a durable channel halt name: channel-leases - description: >- Messages the Courier holds because no engine could receive them. A routing or delivery retention leaves by itself once its cause lifts, or when an operator asks for its routing decision to be run again. name: retained paths: /v1/ownership/audit/lookup: post: tags: - ownership summary: Ownership history for one key, addressed by the key description: >- The same history as the by-assignment route, addressed by the key sent as held, normalized exactly as the lookup normalizes it. It needs no live assignment, so the history of a removed key — the removal included — stays readable. Most recent first. A read: it changes nothing and takes no X-Idempotency. The key travels in the body because it is personal data; a malformed key is refused 422 JDC-0104 with a fixed sentence that never repeats it. operationId: lookupOwnershipAudit parameters: - description: Page, 1-based. explode: false in: query name: page schema: default: 1 description: Page, 1-based. format: int64 minimum: 1 type: integer - description: Items per page. explode: false in: query name: limit schema: default: 50 description: Items per page. format: int64 maximum: 200 minimum: 1 type: integer requestBody: content: application/json: schema: $ref: '#/components/schemas/OwnershipLookupRequest' required: true responses: '200': content: application/json: schema: $ref: '#/components/schemas/OwnershipAuditPage' description: OK '400': content: application/problem+json: schema: $ref: '#/components/schemas/Detail' description: Bad Request '401': content: application/problem+json: schema: $ref: '#/components/schemas/Detail' description: Unauthorized '403': content: application/problem+json: schema: $ref: '#/components/schemas/Detail' description: Forbidden '422': content: application/problem+json: schema: $ref: '#/components/schemas/Detail' description: Unprocessable Entity '500': content: application/problem+json: schema: $ref: '#/components/schemas/Detail' description: Internal Server Error '503': content: application/problem+json: schema: $ref: '#/components/schemas/Detail' description: Service Unavailable components: schemas: OwnershipLookupRequest: additionalProperties: false properties: account: description: >- ACCOUNT only: the account number, digits with an optional trailing check-digit letter. maxLength: 256 type: string branch: description: >- ACCOUNT only: a current account's branch, 1 to 4 digits. Omit it, or send it empty, for a payment account, which has none; empty is never branch 0. maxLength: 256 type: string keyKind: description: The kind of key. enum: - ACCOUNT - DOCUMENT - PIX_KEY_EMAIL - PIX_KEY_PHONE - PIX_KEY_RANDOM - PAYMENT_ID - PIX_RECURRENCE_ID type: string keyValue: description: >- The key as the caller holds it, for every kind except ACCOUNT. Do not pre-normalize. maxLength: 256 minLength: 1 type: string required: - keyKind type: object OwnershipAuditPage: additionalProperties: false properties: items: items: $ref: '#/components/schemas/OwnershipAuditEntry' type: - array - 'null' limit: format: int64 minimum: 1 type: integer page: format: int64 minimum: 1 type: integer required: - items - page - limit type: object Detail: additionalProperties: true properties: code: description: >- Stable, machine-readable domain error code scoped to the emitting service (format: -NNNN). 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 upstream: $ref: '#/components/schemas/Upstream' description: >- RFC 9457 extension member: the error a proxied third-party provider reported. Absent unless the emitting service explicitly surfaced one. type: object OwnershipAuditEntry: additionalProperties: false properties: actor: maxLength: 128 type: string changedAt: format: date-time type: string keyKind: enum: - ACCOUNT - DOCUMENT - PIX_KEY_EMAIL - PIX_KEY_PHONE - PIX_KEY_RANDOM - PAYMENT_ID - PIX_RECURRENCE_ID type: string keyValue: maxLength: 256 type: string newEngineId: description: Null when the assignment was removed. type: - string - 'null' previousEngineId: description: Null on the first assignment. type: - string - 'null' reason: maxLength: 512 type: - string - 'null' required: - keyKind - keyValue - actor - changedAt 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 Upstream: additionalProperties: false properties: code: description: The upstream provider's own error code, verbatim. examples: - E4001 type: string message: description: >- The upstream provider's own error message, verbatim (bounded, never its raw response body). examples: - account not found at provider type: string type: object securitySchemes: BearerAuth: bearerFormat: JWT description: JWT bearer token issued by the identity provider. scheme: bearer type: http ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.