Rybbit Event Tracking API

openapi: 3.0.1
info:
  title: Rybbit Analytics Event Tracking API
  description: Rybbit is an open-source, privacy-friendly web and product analytics platform. This specification covers the public event ingestion endpoint (POST /api/track) used by the tracking script and server-side integrations, and the Bearer-key-authenticated Stats API (beta) for querying sites, sessions, users, retention, and events. The cloud base URL is https://app.rybbit.io; self-hosted instances expose the same paths on their own domain.
  termsOfService: https://www.rybbit.io/terms
  contact:
    name: Rybbit
    url: https://www.rybbit.io
  license:
    name: AGPL-3.0
    url: https://www.gnu.org/licenses/agpl-3.0.html
  version: '1.0'
servers:
- url: https://app.rybbit.io
  description: Rybbit Cloud
- url: https://your-instance.example.com
  description: Self-hosted instance (AGPL-3.0)
security:
- bearerAuth: []
tags:
- name: Event Tracking
  description: Public ingestion endpoint for pageviews and custom events.
paths:
  /api/track:
    post:
      operationId: trackEvent
      tags:
      - Event Tracking
      summary: Send a pageview or custom event.
      description: Public ingestion endpoint used by the Rybbit tracking script and server-side / mobile integrations. No API key is required for basic tracking; the server validates the payload, resolves the site by site_id, and applies rate limiting. The `type` field selects the event kind (pageview, custom_event, or outbound).
      security: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/TrackRequest'
      responses:
        '200':
          description: Event accepted.
        '400':
          description: Bad Request - payload failed validation.
        '429':
          description: Too Many Requests - rate limit exceeded.
components:
  schemas:
    TrackRequest:
      type: object
      required:
      - site_id
      - type
      properties:
        site_id:
          type: string
          description: The Rybbit site identifier the event belongs to.
        type:
          type: string
          enum:
          - pageview
          - custom_event
          - outbound
          description: The kind of event being recorded.
        event_name:
          type: string
          description: Name of the custom event (required for custom_event).
        hostname:
          type: string
        pathname:
          type: string
        querystring:
          type: string
        page_title:
          type: string
        referrer:
          type: string
        language:
          type: string
        screenWidth:
          type: integer
        screenHeight:
          type: integer
        user_agent:
          type: string
        properties:
          type: string
          description: JSON-encoded string of custom event properties.
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: 'User-scoped API key with organization-level access. Keys begin with "rb_" and are 35 characters long. Send as `Authorization: Bearer rb_...`. A `?api_key=` query parameter is also accepted for quick testing only. API keys and rate limits apply to the Stats API on Rybbit Cloud; self-hosted instances have no rate limits.'