> ## 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. # Read a subscription's full destination > Returns the full, unmasked delivery destination of one subscription of the authenticated tenant. The list and detail routes return only `endpoint_display`. Authorization checks the resource `subscriptions` and the action `post`, the same permission that creates a subscription. An absent, soft-deleted, or cross-tenant id returns the same uniform `404 not_found` as the detail route. ## OpenAPI ````yaml /es/openapi/v3-current/streaming-hub.yaml get /v1/subscriptions/{id}/endpoint openapi: 3.1.0 info: title: Lerian Streaming Hub API version: 1.2.0 contact: email: contact@lerian.studio name: Lerian Studio url: https://lerian.studio license: name: Lerian Studio General License description: >- The Streaming Hub control-plane API. Streaming Hub is Lerian's managed event-delivery edge: it consumes CloudEvents from the platform's internal streaming backbone and fans them out to a tenant's own external destinations — webhooks, Amazon SQS, RabbitMQ, Amazon EventBridge, or a pull inbox. This API lets a tenant browse the manifest-fed event catalog, create and manage delivery subscriptions, verify and rotate their credentials, read delivery health, and pull entitled events. An RFC 9457 `application/problem+json` error body carries `type`, `title`, and `status`. An error the hub raises adds `detail` and a stable low-cardinality `code` you can branch on; a request the framework rejects before the operation runs, such as a malformed or schema-invalid one, carries no `code`. In a `5xx`, `detail` is the static `"internal error"`. Mutating operations require an `X-Idempotency` header for at-most-once semantics; a replayed request returns the original response byte-for-byte with `X-Idempotency-Replayed: true`. The catalog and the pull events surface are tenant-scoped through the bearer JWT; the operational probe endpoints (`/healthz`, `/readyz`, `/version`, `/runtime`, `/metrics`) are unauthenticated. Streaming Hub is closed source under the Lerian Studio General License. servers: - url: https://streaming-hub.sandbox.lerian.net security: - BearerAuth: [] tags: - name: Catalog description: Browse the manifest-fed catalog of event types available for subscription. - name: Subscriptions description: >- Create, read, update, and delete delivery subscriptions, and drive the destination verification lifecycle (ping, verify, credential, delegated grant, secret rotation, health). - name: Event Delivery description: >- Pull entitled events for a pull-sink subscription (cursor-as-acknowledgment read). - name: Dashboard description: >- The read-only operational dashboard: a consistent snapshot of ingestion, push delivery, and pull eligibility, plus the paged list of subscriptions that need attention. It never consumes events and never returns a secret. - name: Admin description: Cross-tenant operator forensics. Requires an operator authorization scope. - name: Operational description: Unauthenticated liveness, readiness, build, runtime, and metrics probes. paths: /v1/subscriptions/{id}/endpoint: get: tags: - Subscriptions summary: Read a subscription's full destination description: >- Returns the full, unmasked delivery destination of one subscription of the authenticated tenant. The list and detail routes return only `endpoint_display`. Authorization checks the resource `subscriptions` and the action `post`, the same permission that creates a subscription. An absent, soft-deleted, or cross-tenant id returns the same uniform `404 not_found` as the detail route. operationId: revealSubscriptionEndpoint parameters: - $ref: '#/components/parameters/SubscriptionId' responses: '200': description: The full destination. headers: Cache-Control: $ref: '#/components/headers/NoStore' X-RateLimit-Limit: $ref: '#/components/headers/RateLimitLimit' X-RateLimit-Remaining: $ref: '#/components/headers/RateLimitRemaining' X-RateLimit-Reset: $ref: '#/components/headers/RateLimitReset' content: application/json: schema: $ref: '#/components/schemas/EndpointResponse' '401': $ref: '#/components/responses/Unauthorized' '403': $ref: '#/components/responses/Forbidden' '404': $ref: '#/components/responses/NotFound' '429': $ref: '#/components/responses/RateLimited' '500': $ref: '#/components/responses/InternalError' '503': $ref: '#/components/responses/RateLimiterUnavailable' security: - BearerAuth: [] components: parameters: SubscriptionId: name: id in: path required: true description: The unique identifier of the subscription (UUIDv7). schema: type: string format: uuid headers: NoStore: description: Always `private, no-store`. Do not cache this response. schema: type: string enum: - private, no-store RateLimitLimit: description: >- The requests this tenant may make in one window of this route's allowance. schema: type: integer examples: - 60 RateLimitRemaining: description: The requests left in the current window. `0` on a refusal. schema: type: integer examples: - 59 RateLimitReset: description: The Unix time, in seconds, at which the current window ends. schema: type: integer examples: - 1789499562 RetryAfter: description: The whole seconds to wait before a retry. Always at least `1`. schema: type: string examples: - '1' schemas: EndpointResponse: type: object additionalProperties: false properties: endpoint: type: string description: >- The full delivery destination as stored: the webhook URL with its path and query, the queue URL with its account id, the exchange and routing key, the bus name, or the `pull://` value. examples: - https://hooks.example.com/ingest required: - endpoint Error: type: object description: >- RFC 9457 `application/problem+json` document. An error the hub raises carries `detail` and the stable `code` a client branches on; a request the framework rejects before the operation runs carries no `code`. In a `5xx`, `detail` is the static `"internal error"`. properties: type: type: string format: uri description: >- A stable, versioned URI identifying the problem type (`https://errors.lerian.studio/v1/`), or `about:blank` for problems without a hub-assigned code. examples: - https://errors.lerian.studio/v1/not_found title: type: string description: A short human-readable summary — the HTTP status text. examples: - Not Found status: type: integer description: The HTTP status code, mirrored in the body. examples: - 404 detail: type: string description: >- A caller-safe human explanation of this specific occurrence. For `5xx` responses this is always the static string `"internal error"`. examples: - subscription not found code: type: string description: >- The stable, low-cardinality, machine-readable token a client branches on (for example `not_found`, `unauthorized`, `idempotency_conflict`, `validation_error`). Absent when the framework rejects the request before the operation runs. examples: - not_found required: - type - title - status RateLimiterUnavailableError: type: object description: The flat error body of a `503` from the rate limiter. properties: code: type: integer description: The HTTP status, repeated in the body. examples: - 503 title: type: string description: A stable machine-readable identifier. examples: - service_unavailable message: type: string description: A human-readable explanation. examples: - rate limiter temporarily unavailable required: - code - title - message responses: Unauthorized: description: >- Authentication failed, or there is no trusted tenant context. `code` is `unauthorized` (uniform body — no reason is leaked). content: application/problem+json: schema: $ref: '#/components/schemas/Error' Forbidden: description: >- Access Manager denied the request ahead of the hub, with a plain-text body. On the `/v1` surface the hub itself can also answer `403` as `application/problem+json` with `code` `forbidden`: the delegated scope the request presents disagrees with the scope claim on the relayed token. content: text/plain: schema: type: string application/problem+json: schema: $ref: '#/components/schemas/Error' NotFound: description: >- The resource is absent, soft-deleted, or owned by another tenant — a uniform `code` of `not_found` (no existence oracle). content: application/problem+json: schema: $ref: '#/components/schemas/Error' RateLimited: description: >- The tenant's allowance for this route is spent. `code` is `rate_limited`. Wait `Retry-After` seconds, then retry. Each tenant has three allowances: one for the catalog and the subscription list, detail, endpoint, health, and setup-artifacts reads; one for `GET /v1/events`; and one for the two dashboard routes. headers: Retry-After: $ref: '#/components/headers/RetryAfter' X-RateLimit-Limit: $ref: '#/components/headers/RateLimitLimit' X-RateLimit-Remaining: $ref: '#/components/headers/RateLimitRemaining' X-RateLimit-Reset: $ref: '#/components/headers/RateLimitReset' content: application/problem+json: schema: $ref: '#/components/schemas/Error' InternalError: description: >- An infrastructure fault. `code` is `internal_error` and `detail` is scrubbed to the static `"internal error"` (the cause is logged, never returned). content: application/problem+json: schema: $ref: '#/components/schemas/Error' RateLimiterUnavailable: description: >- The hub could not check the tenant's allowance because its rate-limit store is unreachable, and this deployment is set to refuse rather than to serve unmetered requests. This is a transient condition, not a quota: retry with backoff. A deployment set to fail open serves the request instead. The body is a flat JSON object, not a problem document. content: application/json: schema: $ref: '#/components/schemas/RateLimiterUnavailableError' securitySchemes: BearerAuth: type: http scheme: bearer bearerFormat: JWT description: >- A bearer JWT issued by Access Manager. The `/v1` surface never reads a tenant from the body, path, or query. Machine callers obtain a token with the Access Manager client-credentials flow. The `/admin` surface authorizes against an operator scope and carries no tenant context. ````