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OpenAPI Specification

openapi: 3.2.0
info:
  title: Hookbase Webhook Subscriptions API
  version: 1.0.0
  description: Official OpenAPI 3.0 specification for the Hookbase webhook relay platform. Generated from the maintained Postman collection. Authenticate with an API key (whr_ prefix) as a Bearer token.
  contact:
    name: Hookbase
    url: https://www.hookbase.app
servers:
- url: https://api.hookbase.app
  description: Production
security:
- bearerAuth: []
tags:
- name: Webhook Subscriptions
paths:
  /api/webhook-subscriptions:
    post:
      tags:
      - Webhook Subscriptions
      summary: Create subscription
      operationId: webhook_subscriptions_create_subscription
      responses:
        '200':
          description: Successful response
      description: Subscribe an endpoint to an event type, with optional filtering and transform.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                endpointId:
                  type: string
                  description: Required. Endpoint to deliver to.
                eventTypeId:
                  type: string
                  description: Required. Event type to subscribe to.
                filterExpression:
                  type: string
                  description: Optional. Boolean filter expression (max 1000).
                labelFilters:
                  type: object
                  description: Optional. Match events by label values.
                labelFilterMode:
                  type: string
                  description: Optional. all | any (default all).
                transformId:
                  type: string
                  description: Optional. Transform applied before delivery.
                isEnabled:
                  type: boolean
                  description: Optional. Whether the subscription is active (default true).
                priorityOverride:
                  type: integer
                  description: Optional. Override priority 0–4 (null = inherit).
              required:
              - endpointId
              - eventTypeId
            example:
              endpointId: '{{webhookEndpointId}}'
              eventTypeId: '{{eventTypeId}}'
              filterExpression: payload.amount > 100
              labelFilters:
                env:
                - prod
              labelFilterMode: all
              transformId: '{{transformId}}'
              isEnabled: true
              priorityOverride: 2
    get:
      tags:
      - Webhook Subscriptions
      summary: List subscriptions
      operationId: webhook_subscriptions_list_subscriptions
      parameters:
      - name: endpointId
        in: query
        required: false
        schema:
          type: string
      responses:
        '200':
          description: Successful response
      description: List subscriptions (filter by ?endpointId=).
  /api/webhook-subscriptions/{webhookSubscriptionId}:
    get:
      tags:
      - Webhook Subscriptions
      summary: Get subscription by id
      operationId: webhook_subscriptions_get_subscription_by_id
      parameters:
      - name: webhookSubscriptionId
        in: path
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Successful response
      description: Fetch a single subscription.
    patch:
      tags:
      - Webhook Subscriptions
      summary: Update subscription
      operationId: webhook_subscriptions_update_subscription
      parameters:
      - name: webhookSubscriptionId
        in: path
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Successful response
      description: Update a subscription. All fields optional.
      requestBody:
        required: false
        content:
          application/json:
            schema:
              type: object
              properties:
                filterExpression:
                  type: string
                  description: Optional. Filter expression (null to clear).
                labelFilters:
                  type: object
                  description: Optional. Label filters (null to clear).
                labelFilterMode:
                  type: string
                  description: Optional. all | any.
                transformId:
                  type: string
                  description: Optional. Transform id (null to clear).
                isEnabled:
                  type: boolean
                  description: Optional. Enable/disable the subscription.
                priorityOverride:
                  type: integer
                  description: Optional. Priority override 0–4 (null = inherit).
            example:
              filterExpression: payload.amount > 100
              labelFilters:
                env:
                - prod
              labelFilterMode: all
              transformId: '{{transformId}}'
              isEnabled: true
              priorityOverride: 2
components:
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: Hookbase API key with the whr_ prefix.