> ## Documentation Index > Fetch the complete documentation index at: https://docs.drop-hub.com/llms.txt > Use this file to discover all available pages before exploring further. # List merchant webhook deliveries > Delivery is at least once and may be out of order. Deduplicate by event ID and reconcile with sequence and resource version. ## OpenAPI ````yaml /openapi.yaml get /v2/external/webhook-deliveries openapi: 3.1.0 info: title: DropHub External API version: v2 description: >- DropHub API v2 for Merchant, shipping-company, shipment, and OAuth 2.0 integrations. contact: name: DropHub API Governance license: name: Proprietary servers: - url: https://api-test.drop-hub.com description: Sandbox deployment with isolated data and credentials. - url: https://api.drop-hub.com description: Production deployment; production credentials only. security: [] tags: - name: Authentication description: >- Authentication, sessions, the company a principal is, and merchant API credentials - name: External Price Estimates description: OAuth-scoped transient route-distance and tariff calculation - name: External Shipments description: OAuth-scoped Merchant shipment creation, lookup, and cancellation - name: External Tracking description: Merchant-authenticated and privacy-minimized public tracking projections - name: Sandbox description: >- Tenant-bound self-service fixture lifecycle, available only on the isolated sandbox deployment - name: Webhook Endpoints description: Merchant webhook subscriptions, lifecycle, and signing-secret rotation - name: Webhook Deliveries description: Durable webhook delivery history and replay paths: /v2/external/webhook-deliveries: get: tags: - Webhook Deliveries summary: List merchant webhook deliveries description: >- Delivery is at least once and may be out of order. Deduplicate by event ID and reconcile with sequence and resource version. operationId: listMerchantWebhookDeliveries parameters: - $ref: '#/components/parameters/AcceptLanguage' - $ref: '#/components/parameters/BoundedLimit' - $ref: '#/components/parameters/PageCursor' responses: '200': description: Delivery history page content: application/json: schema: $ref: '#/components/schemas/WebhookDeliveryPage' '401': $ref: '#/components/responses/AuthenticationFailed' '403': $ref: '#/components/responses/AccessDenied' '405': $ref: '#/components/responses/MethodNotAllowed' security: - oauthClientCredentials: - webhooks:manage components: parameters: AcceptLanguage: name: Accept-Language in: header required: false description: >- Preferred response language when a localized representation is available. schema: type: string maxLength: 64 example: en BoundedLimit: name: limit in: query required: false description: >- Maximum items to return. Default 25, maximum 100. Values outside 1..100 are rejected with 400; they are never clamped. schema: type: integer minimum: 1 maximum: 100 default: 25 PageCursor: name: cursor in: query required: false description: >- Opaque continuation token from a previous page's page.nextCursor. Bound to the tenant, parent resource, filter and sort of the originating query; a cursor presented to a different query is rejected with 400 INVALID_CURSOR. schema: type: string maxLength: 256 pattern: ^[A-Za-z0-9_-]{1,256}$ schemas: WebhookDeliveryPage: type: object required: - data - page - links properties: data: type: array items: $ref: '#/components/schemas/WebhookDelivery' page: $ref: '#/components/schemas/PageMetadata' links: $ref: '#/components/schemas/PageLinks' WebhookDelivery: type: object additionalProperties: false required: - deliveryId - endpointId - eventId - replayNumber - status - attemptCount - nextAttemptAt - createdAt - updatedAt - version properties: deliveryId: $ref: '#/components/schemas/Uuid' endpointId: $ref: '#/components/schemas/Uuid' eventId: type: string pattern: ^evt_[0-9a-f]{32}$ replayNumber: type: integer minimum: 0 replayOfDeliveryId: oneOf: - $ref: '#/components/schemas/Uuid' - type: 'null' status: type: string enum: - PENDING - IN_FLIGHT - RETRY_WAIT - DELIVERED - DEAD_LETTER attemptCount: type: integer minimum: 0 maximum: 12 nextAttemptAt: $ref: '#/components/schemas/InstantUtc' lastFailureCategory: type: - string - 'null' lastHttpStatus: type: - integer - 'null' minimum: 100 maximum: 599 deliveredAt: oneOf: - $ref: '#/components/schemas/InstantUtc' - type: 'null' deadLetteredAt: oneOf: - $ref: '#/components/schemas/InstantUtc' - type: 'null' createdAt: $ref: '#/components/schemas/InstantUtc' updatedAt: $ref: '#/components/schemas/InstantUtc' version: type: integer format: int64 minimum: 0 example: deliveryId: 018f2d8a-1f00-7000-8000-000000000209 endpointId: 018f2d8a-1f00-7000-8000-00000000020a eventId: evt_018f2d8a1f0070008000000000000205 replayNumber: 1 replayOfDeliveryId: 018f2d8a-1f00-7000-8000-00000000020b status: PENDING attemptCount: 0 nextAttemptAt: '2026-08-22T18:31:00Z' createdAt: '2026-08-22T18:31:00Z' updatedAt: '2026-08-22T18:31:00Z' version: 0 PageMetadata: type: object required: - limit - hasMore additionalProperties: false properties: limit: type: integer minimum: 1 maximum: 100 description: The bounded limit the server actually applied. nextCursor: oneOf: - type: string maxLength: 256 - type: 'null' description: Continuation token, or null when the result set is exhausted. hasMore: type: boolean description: Always equal to (nextCursor is not null). examples: - limit: 25 nextCursor: null hasMore: false PageLinks: type: object required: - self additionalProperties: false properties: self: type: string maxLength: 512 description: Safe path of the originating query, without secrets or credentials. Problem: type: object description: RFC 9457 Problem Details with stable DropHub extensions additionalProperties: true required: - type - title - status - code - timestamp - correlationId - requestId properties: type: type: string format: uri title: type: string maxLength: 128 status: type: integer format: int32 minimum: 400 maximum: 599 detail: type: string maxLength: 512 instance: type: string format: uri-reference code: type: string pattern: ^[A-Z][A-Z0-9_]{1,63}$ timestamp: type: string format: date-time correlationId: type: string format: uuid requestId: type: string format: uuid traceId: type: string pattern: ^[0-9a-f]{32}$ violations: type: array maxItems: 20 items: $ref: '#/components/schemas/Violation' example: type: https://api.drop-hub.com/problems/access-denied title: Access denied status: 403 detail: Access to this resource is denied. instance: /v2/external/shipments/018f2d8a-1f00-7000-8000-000000000206 code: ACCESS_DENIED timestamp: '2026-08-22T18:30:00Z' correlationId: 018f2d8a-1f00-7000-8000-000000000207 requestId: 018f2d8a-1f00-7000-8000-000000000208 Uuid: type: string format: uuid InstantUtc: type: string format: date-time x-java-type: java.time.Instant x-postgresql-type: timestamptz(6) x-time-semantics: UTC-instant Violation: type: object additionalProperties: false required: - field - code - message properties: field: type: string maxLength: 128 code: type: string maxLength: 64 message: type: string maxLength: 256 responses: AuthenticationFailed: description: Authentication failed without account, token, or tenant enumeration. headers: WWW-Authenticate: $ref: '#/components/headers/WwwAuthenticate' content: application/problem+json: schema: $ref: '#/components/schemas/Problem' example: type: https://api.drop-hub.com/problems/authentication-required title: Authentication required status: 401 detail: Authentication is required for this resource. instance: /v2/external/shipments/018f2d8a-1f00-7000-8000-000000000206 code: AUTHENTICATION_REQUIRED timestamp: '2026-08-22T18:30:00Z' correlationId: 018f2d8a-1f00-7000-8000-000000000207 requestId: 018f2d8a-1f00-7000-8000-000000000208 AccessDenied: description: >- Access denied without exposing internal policy or resource ownership. The machine code is `ACCESS_DENIED`, except for two refusals that describe the caller's own session and are therefore safe to name: `ASSURANCE_REQUIRED`, when the caller holds the authority but the session has not proved a second factor, and `REAUTHENTICATION_REQUIRED`, when the session is no longer fresh enough for the operation. Both are answered by proving the session again and retrying — see `POST /v2/company-authentication/assurance-elevations`. content: application/problem+json: schema: $ref: '#/components/schemas/Problem' MethodNotAllowed: description: The method is not supported for this resource. headers: Allow: description: Methods supported by this resource. schema: type: string content: application/problem+json: schema: $ref: '#/components/schemas/Problem' headers: WwwAuthenticate: description: Bearer challenge for an unauthenticated or invalid-token request. schema: type: string example: Bearer securitySchemes: oauthClientCredentials: type: oauth2 description: >- OAuth 2.0 client-credentials flow for external machine-to-machine integrations. flows: clientCredentials: tokenUrl: /oauth/token scopes: shipments:read: Read Merchant-owned shipments shipments:write: Create and cancel Merchant-owned shipments webhooks:manage: Manage Merchant webhook endpoints, delivery history, and replay ````