> ## Documentation Index > Fetch the complete documentation index at: https://invoiceapi.mintlify.site/llms.txt > Use this file to discover all available pages before exploring further. # List webhook deliveries > Each row is the current state of one (event, endpoint) delivery — status, attempt count, last response/error, and the next scheduled retry. Use it to see why deliveries failed and to confirm a resent event was re-delivered. ## OpenAPI ````yaml /api-reference/openapi.json get /v1/webhook_endpoints/{id}/deliveries openapi: 3.1.0 info: title: Invoice API description: >- Mexican CFDI 4.0 invoicing API. Versioned via the Invoice-Version header; current: 2026-07-15. See GET /v1/versions. version: 0.1.0 servers: - url: https://api.newinvoice.dev description: Production - url: http://localhost:3000 description: Local development security: - bearerAuth: [] tags: - name: api_keys description: Platform API-key lifecycle (create, list, revoke) - name: accounts description: 'Connect: platform-owned connected accounts (multi-tenant)' - name: fiscal_profiles description: Emitter RFC + CSD/FIEL registration - name: invoices description: Create, stamp, cancel CFDI 4.0 invoices - name: validations description: Validate arbitrary CFDI XML - name: downloads description: SAT descarga masiva jobs - name: webhook_endpoints description: HMAC-signed event delivery - name: events description: Event log - name: balance description: Remaining stamp credits - name: usage description: Metered usage records (stamps consumed) - name: catalogs description: SAT reference catalogs (uso CFDI, payment forms/methods, tax regimes, …) - name: docs description: Served documentation (error catalog + guides) paths: /v1/webhook_endpoints/{id}/deliveries: get: tags: - webhook_endpoints summary: List webhook deliveries description: >- Each row is the current state of one (event, endpoint) delivery — status, attempt count, last response/error, and the next scheduled retry. Use it to see why deliveries failed and to confirm a resent event was re-delivered. parameters: - schema: default: 20 type: integer minimum: 1 maximum: 100 in: query name: limit required: false description: Page size, 1-100 (default 20). - schema: type: string minLength: 1 in: query name: starting_after required: false description: >- Cursor: return the page of results OLDER than this object id (the next page). - schema: type: string minLength: 1 in: query name: ending_before required: false description: >- Cursor: return the page of results NEWER than this object id (the previous page). - schema: type: string in: path name: id required: true description: Webhook endpoint id, e.g. "we_2P9K3sample". - $ref: '#/components/parameters/InvoiceVersion' - $ref: '#/components/parameters/InvoiceAccount' responses: '200': description: Default Response content: application/json: schema: type: object properties: object: type: string description: Always "list". enum: - list url: description: The path this list was requested from. type: string data: type: array items: type: object properties: object: type: string description: Always "webhook_delivery". enum: - webhook_delivery id: type: string description: Delivery-attempt record id. event_id: type: string description: >- Id of the event being delivered, e.g. "evt_2P9K3sample". status: type: string enum: - pending - success - failed description: >- Delivery outcome: "pending" (awaiting first attempt), "success" (2xx), or "failed". attempts: type: integer minimum: -9007199254740991 maximum: 9007199254740991 description: Cumulative attempt count across retries and resends. response_status: anyOf: - type: integer minimum: -9007199254740991 maximum: 9007199254740991 - type: 'null' description: >- HTTP status of the last attempt, or null if none yet. last_error: anyOf: - type: string - type: 'null' description: Last delivery error message, or null. next_attempt_at: anyOf: - type: string - type: 'null' description: >- When the next retry is scheduled (ISO-8601 UTC), or null once terminal or succeeded. created_at: type: string description: Creation timestamp, ISO-8601 UTC. updated_at: type: string description: Last-update timestamp, ISO-8601 UTC. required: - object - id - event_id - status - attempts - response_status - last_error - next_attempt_at - created_at - updated_at additionalProperties: false description: The page of delivery records, newest first. has_more: type: boolean description: True if more results exist beyond this page. required: - object - data - has_more additionalProperties: false example: object: list url: https://example.com/webhooks/invoice data: - object: webhook_delivery id: obj_2P9K3sample event_id: evt_2P9K3sample status: pending attempts: -9007199254740991 response_status: -9007199254740991 last_error: string next_attempt_at: '2026-07-10T18:25:43Z' created_at: '2026-07-10T18:25:43Z' updated_at: '2026-07-10T18:25:43Z' has_more: true headers: Request-Id: $ref: '#/components/headers/RequestId' Invoice-Version: $ref: '#/components/headers/InvoiceVersionResponse' traceparent: $ref: '#/components/headers/Traceparent' RateLimit-Limit: $ref: '#/components/headers/RateLimitLimit' RateLimit-Remaining: $ref: '#/components/headers/RateLimitRemaining' RateLimit-Reset: $ref: '#/components/headers/RateLimitReset' '401': description: Missing or invalid API key. content: application/problem+json: schema: $ref: '#/components/schemas/Problem' example: type: https://errors.invoiceapi.mx/auth_unauthorized title: Authentication required status: 401 code: auth.unauthorized detail: Missing or invalid API key. remediation: >- Send `Authorization: Bearer sk_test_...` (or sk_live_...) with a valid API key. doc_url: /docs/errors#auth-unauthorized request_id: req_2P9K3sample headers: Request-Id: $ref: '#/components/headers/RequestId' Invoice-Version: $ref: '#/components/headers/InvoiceVersionResponse' traceparent: $ref: '#/components/headers/Traceparent' '404': description: Resource not found in this org + mode. content: application/problem+json: schema: $ref: '#/components/schemas/Problem' example: type: https://errors.invoiceapi.mx/resource_not_found title: Resource not found status: 404 code: resource.not_found detail: No such id in this org + mode. remediation: >- Verify the id and that the key mode (test/live) matches the id. doc_url: /docs/errors#resource-not_found request_id: req_2P9K3sample headers: Request-Id: $ref: '#/components/headers/RequestId' Invoice-Version: $ref: '#/components/headers/InvoiceVersionResponse' traceparent: $ref: '#/components/headers/Traceparent' '422': description: Request validation failed. content: application/problem+json: schema: $ref: '#/components/schemas/Problem' example: type: https://errors.invoiceapi.mx/request_validation_failed title: Request validation failed status: 422 code: request.validation_failed detail: One or more fields did not satisfy the schema. remediation: Fix the fields listed in `errors` and resubmit. doc_url: /docs/errors#request-validation_failed request_id: req_2P9K3sample headers: Request-Id: $ref: '#/components/headers/RequestId' Invoice-Version: $ref: '#/components/headers/InvoiceVersionResponse' traceparent: $ref: '#/components/headers/Traceparent' '429': description: Rate limit exceeded — back off per the Retry-After header. content: application/problem+json: schema: $ref: '#/components/schemas/Problem' example: type: https://errors.invoiceapi.mx/rate_limit_exceeded title: Rate limit exceeded status: 429 code: rate_limit.exceeded detail: >- Too many requests for this key + request class (reads and writes are limited separately). remediation: >- Back off and retry after the number of seconds in the Retry-After header; batch work or lower your request rate. doc_url: /docs/errors#rate_limit-exceeded request_id: req_2P9K3sample headers: Request-Id: $ref: '#/components/headers/RequestId' Invoice-Version: $ref: '#/components/headers/InvoiceVersionResponse' traceparent: $ref: '#/components/headers/Traceparent' RateLimit-Limit: $ref: '#/components/headers/RateLimitLimit' RateLimit-Remaining: $ref: '#/components/headers/RateLimitRemaining' RateLimit-Reset: $ref: '#/components/headers/RateLimitReset' Retry-After: $ref: '#/components/headers/RetryAfter' '500': description: Internal server error. content: application/problem+json: schema: $ref: '#/components/schemas/Problem' example: type: https://errors.invoiceapi.mx/internal_error title: Internal server error status: 500 code: internal.error detail: An unexpected error occurred. remediation: >- Retry later; contact support with the request_id if it persists. doc_url: /docs/errors#internal-error request_id: req_2P9K3sample headers: Request-Id: $ref: '#/components/headers/RequestId' Invoice-Version: $ref: '#/components/headers/InvoiceVersionResponse' traceparent: $ref: '#/components/headers/Traceparent' components: parameters: InvoiceVersion: name: Invoice-Version in: header required: false description: >- Pin a dated API release (Stripe-style). Omit to use the current version. An unknown value returns 400 `request.invalid_version`. Echoed back on every response. schema: type: string example: '2026-07-10' InvoiceAccount: name: Invoice-Account in: header required: false description: >- Connect: act on behalf of one of your connected accounts (its `acct_…`/`org_…` id). Omit to act as your own organization. Not honored on /v1/api_keys. schema: type: string example: org_2P9connectedacct headers: RequestId: description: >- Unique id for this request. Also the `request_id` in every error body — log it and quote it to support; idempotency keys off it too. schema: type: string example: req_2P9K3sample InvoiceVersionResponse: description: >- The dated API version resolved for this request (request header → key pin → current). Echoed on every response. schema: type: string example: '2026-07-15' Traceparent: description: >- W3C Trace Context. When you send a valid `traceparent`, the response continues the trace (same trace-id, a fresh span-id, sampled flag). schema: type: string example: 00-0af7651916cd43dd8448eb211c80319c-b7ad6b7169203331-01 RateLimitLimit: description: >- IETF draft rate-limit: the ceiling of the token bucket consulted for this request class (reads and writes have independent buckets). schema: type: integer example: 100 RateLimitRemaining: description: 'IETF draft rate-limit: tokens left in the bucket after this request.' schema: type: integer example: 99 RateLimitReset: description: 'IETF draft rate-limit: seconds until the bucket refills to its ceiling.' schema: type: integer example: 1 RetryAfter: description: >- Seconds to wait before retrying (RFC 9110). Present on 429 and on retryable upstream failures. schema: type: integer example: 1 schemas: Problem: type: object description: RFC 9457 problem+json error with agent-first extensions. properties: type: type: string format: uri title: type: string status: type: integer code: type: string description: Stable dotted machine code to switch on. detail: type: string remediation: type: string description: Actionable next step for a human or agent. request_id: type: string pac: type: object properties: provider: type: string codigo: type: string mensaje: type: string errors: type: array items: type: object properties: field: type: string message: type: string required: - type - title - status - code - request_id securitySchemes: bearerAuth: type: http scheme: bearer description: 'API key: `Authorization: Bearer sk_test_...` or `sk_live_...`.' ````