Primitive Webhook Deliveries API

openapi: 3.1.0
info:
  title: Primitive Account Webhook Deliveries API
  version: 1.0.0
  description: "Primitive is email infrastructure for AI agents. The Primitive API lets you manage domains, emails, webhook endpoints,\nfilters, and account settings programmatically.\n\n## Authentication\n\nMost endpoints require a Bearer token in the `Authorization` header:\n\n```\nAuthorization: Bearer prim_<your_api_key>\nAuthorization: Bearer prim_oat_<oauth_access_token>\n```\n\nAPI keys and OAuth access tokens are org-scoped. Create and manage them in your dashboard\nunder Settings > API Keys. CLI login plus CLI/agent signup endpoints\nexplicitly declare `security: []`; they do not require an API key because\nthey are used to create OAuth CLI sessions.\n\n## Rate Limiting\n\nThe API enforces a sliding window rate limit of **120 requests per\n60 seconds** per organization. When exceeded, the API returns `429`\nwith a `Retry-After` header indicating how many seconds to wait.\n\n## Pagination\n\nList endpoints use cursor-based pagination. Responses include a\n`meta` object with `total`, `limit`, and `cursor` fields. Pass the\n`cursor` value as a query parameter to fetch the next page. When\n`cursor` is `null`, there are no more results.\n\n## Response Format\n\nAll responses use a consistent envelope:\n\n```json\n{\n  \"success\": true,\n  \"data\": { ... },\n  \"meta\": { \"total\": 42, \"limit\": 50, \"cursor\": \"...\" }\n}\n```\n\nErrors follow the same pattern:\n\n```json\n{\n  \"success\": false,\n  \"error\": { \"code\": \"not_found\", \"message\": \"Email not found\" }\n}\n```\n\n## Webhook signing\n\nOutbound webhook deliveries (configured via the `endpoints` API)\nare signed so receivers can verify they came from Primitive and\nhave not been tampered with in transit. The signing scheme is\ndeliberately simple so it can be reimplemented in any language\nin a few lines. The Node SDK's `verifyWebhookSignature` helper\nis the reference implementation; the wire details below let you\nwrite a verifier in Python, Go, Ruby, etc. without reading our\nsource.\n\n**Header**: `Primitive-Signature: t=<unix-seconds>,v1=<hex>`\n\nA legacy `MyMX-Signature` header is also sent on every delivery\nwith the same value, retained for back-compatibility with\nintegrations written before the rename. New code should read\n`Primitive-Signature`.\n\n**Signed string**: `${timestamp}.${rawBody}` where `timestamp`\nis the Unix-seconds integer from the `t=` parameter and\n`rawBody` is the exact bytes of the HTTP request body BEFORE\nany JSON decoding. Verify against the raw body, not a\nre-serialized parse, or you will silently mismatch on\ninsignificant whitespace.\n\n**Signature**: HMAC-SHA256 of the signed string, hex-encoded\n(lowercase). Use the account's webhook secret as the HMAC key,\nas a UTF-8 byte sequence.\n\n**Secret**: returned by `GET /account/webhook-secret`. The\nstring looks base64-shaped (e.g. `XNHBBW8VqoBjRfNs1tkZj11jTk...`)\nbut is NOT base64; use it AS-IS as a UTF-8 string for the HMAC\nkey. Base64-decoding before HMAC will silently produce\nmismatched signatures.\n\n**Tolerance**: by convention, reject deliveries whose `t=`\ntimestamp is more than 5 minutes off your wall-clock to defend\nagainst replay attacks. The Node SDK's helper enforces this by\ndefault.\n\n**Verification recipe** (any language):\n\n```\n1. Read the raw HTTP body (do not parse).\n2. Read `Primitive-Signature: t=<ts>,v1=<sig>`.\n3. Reject if abs(now - ts) > 300 seconds.\n4. expected = HMAC_SHA256_hex(secret_utf8, f\"{ts}.{rawBody}\")\n5. Constant-time compare expected to sig. Reject if not equal.\n```\n\nFor Node, use `verifyWebhookSignature` from\n`@primitivedotdev/sdk/webhook` (or the higher-level\n`handleWebhook` helper if you want a one-liner). For other\nlanguages, the recipe above is everything you need.\n\nTest deliveries: `POST /endpoints/{id}/test` triggers a fake\ndelivery to your endpoint URL, signed with your real account\nsecret, so you can confirm verification end-to-end without\nneeding real inbound mail. The test response carries the exact\n`signature` header value sent on the wire so you can compare\nstrings directly.\n\n\n## Errors\n\nEvery error response is the same JSON envelope (`{ \"success\": false, \"error\": { \"code\", \"message\" } }`), served as `application/json` with HTTP status codes, following the RFC 7807 problem-details shape. The `error.code` is a stable machine-readable string and `error.message` is human-readable.\n\n## Authorization and roles\n\nAccess is governed by organization role-based access control. Every organization member holds one of three roles — `owner`, `admin`, or `member` — and a credential inherits a role. **API keys** always act at `member` level, regardless of the role of the user who created them, so an API key can never perform owner- or admin-only actions. **OAuth access tokens** act with the authorizing user's current organization role, resolved on each request. Every operation in this spec is part of the member-level surface, so any valid credential can call it. Organization administration that is not part of this API — billing and organization settings — requires an `owner` or `admin` and is performed in the dashboard. Fine-grained per-key scopes (e.g. a send-only or read-only key) are on the roadmap; today the role model is the unit of access control.\n\n## Versioning\n\nThe current stable API is **v1**. All endpoints are served under `/v1/` and are covered by a backward-compatibility guarantee: existing fields and status codes will not change without a deprecation notice.\n\nBreaking changes are announced at least 6 months in advance via changelog and email. Deprecated operations and fields are marked `x-deprecated: true` in the spec and carry a plain-English description of the replacement. The `v1` path prefix is guaranteed stable indefinitely; backward-compatible additions (new optional fields, new endpoints) may be made at any time without a version bump."
  contact:
    name: Primitive
    url: https://primitive.dev
  license:
    name: Proprietary
    url: https://primitive.dev/terms
  x-stability-level: stable
  x-deprecation-policy: 'Breaking changes are announced at least 6 months in advance. Deprecated fields carry x-deprecated: true. The current stable version is v1.'
servers:
- url: https://api.primitive.dev/v1
  description: Canonical API host (PRIMITIVE_API_BASE_URL). Carries every public API operation.
tags:
- name: Webhook Deliveries
  description: View and replay webhook delivery attempts
paths:
  /webhooks/deliveries:
    get:
      operationId: listDeliveries
      summary: List webhook deliveries
      description: 'Returns a paginated list of webhook delivery attempts. Each delivery

        includes a nested `email` object with sender, recipient, and subject.

        '
      tags:
      - Webhook Deliveries
      parameters:
      - name: cursor
        in: query
        schema:
          type: string
        description: 'Pagination cursor from a previous response''s `meta.cursor` field.

          Format: `{ISO-datetime}|{id}`

          '
      - name: limit
        in: query
        schema:
          type: integer
          minimum: 1
          maximum: 100
          default: 50
        description: Number of results per page
      - name: email_id
        in: query
        schema:
          type: string
          format: uuid
        description: Filter by email ID
      - name: status
        in: query
        schema:
          type: string
          enum:
          - pending
          - delivered
          - header_confirmed
          - failed
        description: Filter by delivery status
      - name: date_from
        in: query
        schema:
          type: string
          format: date-time
        description: Filter deliveries created on or after this timestamp
      - name: date_to
        in: query
        schema:
          type: string
          format: date-time
        description: Filter deliveries created on or before this timestamp
      responses:
        '200':
          description: Paginated list of deliveries
          content:
            application/json:
              schema:
                allOf:
                - type: object
                  properties:
                    success:
                      type: boolean
                      const: true
                    meta:
                      type: object
                      properties:
                        total:
                          type: integer
                          description: Total number of matching records
                        limit:
                          type: integer
                          description: Page size used for this request
                        cursor:
                          type:
                          - string
                          - 'null'
                          description: Cursor for the next page, or null if no more results
                      required:
                      - total
                      - limit
                      - cursor
                  required:
                  - success
                  - data
                  - meta
                - type: object
                  properties:
                    data:
                      type: array
                      items:
                        type: object
                        properties:
                          id:
                            type: string
                            description: Delivery ID (numeric string)
                          email_id:
                            type: string
                            format: uuid
                          org_id:
                            type: string
                            format: uuid
                          endpoint_id:
                            type: string
                            format: uuid
                          endpoint_url:
                            type: string
                          status:
                            type: string
                            enum:
                            - pending
                            - delivered
                            - header_confirmed
                            - failed
                          attempt_count:
                            type: integer
                          duration_ms:
                            type:
                            - integer
                            - 'null'
                          last_error:
                            type:
                            - string
                            - 'null'
                          created_at:
                            type: string
                            format: date-time
                          updated_at:
                            type: string
                            format: date-time
                          email:
                            type:
                            - object
                            - 'null'
                            properties:
                              sender:
                                type: string
                              recipient:
                                type: string
                              subject:
                                type:
                                - string
                                - 'null'
                            required:
                            - sender
                            - recipient
                        required:
                        - id
                        - email_id
                        - org_id
                        - endpoint_id
                        - endpoint_url
                        - status
                        - attempt_count
                        - created_at
                        - updated_at
          headers:
            ratelimit-limit:
              description: Maximum number of requests allowed in the current window.
              schema:
                type: integer
                minimum: 1
                example: 120
            ratelimit-remaining:
              description: Remaining requests in the current window.
              schema:
                type: integer
                minimum: 0
                example: 118
            ratelimit-reset:
              description: Unix timestamp (seconds) when the current window resets.
              schema:
                type: integer
                example: 1700000060
            ratelimit-policy:
              description: Rate-limit policy in `limit;w=seconds` format, e.g. `120;w=60`.
              schema:
                type: string
                example: 120;w=60
        '400':
          $ref: '#/components/responses/ValidationError'
          description: Invalid request parameters
        '401':
          $ref: '#/components/responses/Unauthorized'
          description: Invalid or missing API key
      security:
      - BearerAuth: []
  /webhooks/deliveries/{id}/replay:
    parameters:
    - name: id
      in: path
      required: true
      schema:
        type: string
        pattern: ^\d+$
      description: Delivery ID (numeric)
    post:
      operationId: replayDelivery
      summary: Replay a webhook delivery
      description: 'Re-sends the stored webhook payload from a previous delivery attempt.

        If the original endpoint is still active, it is targeted. If the

        original endpoint was deleted, the oldest active endpoint is used.

        Deactivated endpoints cannot be replayed to. Rate limited per-org,

        sharing an org-wide budget with email replays.

        '
      tags:
      - Webhook Deliveries
      responses:
        '200':
          description: Replay result
          content:
            application/json:
              schema:
                allOf:
                - type: object
                  properties:
                    success:
                      type: boolean
                      const: true
                  required:
                  - success
                  - data
                - type: object
                  properties:
                    data:
                      type: object
                      properties:
                        delivered:
                          type: integer
                          description: Number of successful deliveries
                        failed:
                          type: integer
                          description: Number of failed deliveries
                      required:
                      - delivered
                      - failed
          headers:
            ratelimit-limit:
              description: Maximum number of requests allowed in the current window.
              schema:
                type: integer
                minimum: 1
                example: 120
            ratelimit-remaining:
              description: Remaining requests in the current window.
              schema:
                type: integer
                minimum: 0
                example: 118
            ratelimit-reset:
              description: Unix timestamp (seconds) when the current window resets.
              schema:
                type: integer
                example: 1700000060
            ratelimit-policy:
              description: Rate-limit policy in `limit;w=seconds` format, e.g. `120;w=60`.
              schema:
                type: string
                example: 120;w=60
        '400':
          $ref: '#/components/responses/ValidationError'
          description: Invalid request parameters
        '401':
          $ref: '#/components/responses/Unauthorized'
          description: Invalid or missing API key
        '404':
          $ref: '#/components/responses/NotFound'
          description: Resource not found
        '429':
          $ref: '#/components/responses/RateLimited'
          description: Rate limit exceeded
      security:
      - BearerAuth: []
      parameters:
      - name: Idempotency-Key
        in: header
        required: false
        description: Optional client-supplied idempotency key. Retrying a request with the same key returns the original result instead of performing the action a second time; if omitted the server derives one from the canonical payload hash. Safe to retry network failures without duplicating side effects.
        schema:
          type: string
          minLength: 1
          maxLength: 255
components:
  responses:
    RateLimited:
      description: Rate limit exceeded
      headers:
        Retry-After:
          schema:
            type: integer
          description: Seconds to wait before retrying
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
          example:
            success: false
            error:
              code: rate_limit_exceeded
              message: Rate limit exceeded
    Unauthorized:
      description: Invalid or missing API key
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
          example:
            success: false
            error:
              code: unauthorized
              message: Invalid or missing API key
    NotFound:
      description: Resource not found
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
          example:
            success: false
            error:
              code: not_found
              message: Resource not found
    ValidationError:
      description: Invalid request parameters
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
          example:
            success: false
            error:
              code: validation_error
              message: Invalid domain format
  schemas:
    GateDenial:
      type: object
      properties:
        name:
          type: string
          enum:
          - send_to_confirmed_domains
          - send_to_known_addresses
          description: Public recipient-scope gate name that denied the send.
        reason:
          type: string
          enum:
          - domain_not_confirmed
          - recipient_unauthenticated
          - recipient_not_known
          description: Stable machine-readable denial reason.
        message:
          type: string
          description: Human-readable explanation of the gate denial.
        subject:
          type: string
          description: Domain or address the gate evaluated.
        fix:
          $ref: '#/components/schemas/GateFix'
        docs_url:
          type: string
          description: Public docs URL with more context.
      required:
      - name
      - reason
      - message
      - subject
    ErrorResponse:
      type: object
      properties:
        success:
          type: boolean
          const: false
        error:
          type: object
          properties:
            code:
              type: string
              enum:
              - unauthorized
              - forbidden
              - not_found
              - validation_error
              - rate_limit_exceeded
              - internal_error
              - conflict
              - mx_conflict
              - outbound_disabled
              - cannot_send_from_domain
              - recipient_not_allowed
              - outbound_key_missing
              - outbound_unreachable
              - outbound_key_invalid
              - outbound_capacity_exhausted
              - outbound_response_malformed
              - outbound_relay_failed
              - discard_not_enabled
              - inbound_not_repliable
              - search_timeout
              - authorization_pending
              - slow_down
              - access_denied
              - expired_token
              - invalid_device_code
              - invalid_signup_code
              - invalid_signup_token
              - invalid_verification_code
              - email_delivery_failed
              - clerk_signup_failed
              - no_orgs_for_user
              - org_not_accessible
              - feature_disabled
              - memory_conflict
              - developer_usage_credit_exhausted
              - no_payout_address
              - ownership_proof_failed
              - payment_verification_failed
              - payment_declined
              - challenge_expired
              - settlement_failed
              - template_not_installable
              - scaffold_only
              - invalid_variables
              - unknown_secrets
              - missing_secrets
              - no_inbound_domain
              - domain_cannot_send
              - address_taken
              - route_cap_reached
              - name_exhausted
            message:
              type: string
            details:
              type: object
              description: 'Optional structured data that callers can inspect to recover

                from the error. The fields present depend on `code`. Additional

                keys may be added over time without a major-version bump.

                '
              additionalProperties: true
              properties:
                mx_conflict:
                  type: object
                  description: Present when `code == mx_conflict`.
                  required:
                  - provider_name
                  - suggested_subdomain
                  properties:
                    provider_name:
                      type: string
                      description: Human-readable name of the detected mailbox provider (e.g. "Google Workspace").
                    suggested_subdomain:
                      type: string
                      description: Subdomain to try instead (e.g. "mail" for `mail.example.com`).
                required_entitlements:
                  type: array
                  items:
                    type: string
                  description: Entitlements that would allow a denied send when no recipient-scope gate was granted.
                sent_email_id:
                  type: string
                  description: ID of the persisted sent-email attempt associated with the error.
                content_hash:
                  type: string
                  description: Content hash of the original request on idempotency cache-hit errors.
                client_idempotency_key:
                  type: string
                  description: Effective idempotency key associated with the original request.
            gates:
              type: array
              items:
                $ref: '#/components/schemas/GateDenial'
              description: Structured per-gate denial detail for recipient-scope send-mail failures.
            request_id:
              type: string
              description: Server-issued request identifier for support and tracing.
          required:
          - code
          - message
      required:
      - success
      - error
    GateFix:
      type: object
      properties:
        action:
          type: string
          enum:
          - confirm_domain
          - sender_must_fix_authentication
          - wait_for_inbound
          description: Suggested next action for the caller.
        subject:
          type: string
          description: Entity the action applies to.
      required:
      - action
      - subject
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      description: 'API key with `prim_` prefix or OAuth access token with `prim_oat_` prefix: `Authorization: Bearer <token>`. Access is governed by the caller''s organization role (`owner`, `admin`, or `member`): API keys always act at `member` level regardless of who created them, and OAuth access tokens act with the authorizing user''s current organization role, resolved per request. Every operation in this spec is available to organization members; billing and organization administration are owner/admin actions performed in the dashboard and are not part of this API.'
    DownloadToken:
      type: apiKey
      in: query
      name: token
      description: Signed download token provided in webhook payloads