2023-04-03 19:14:51 +02:00
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openapi: 3.0.0
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info:
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version: '1.0.0'
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title: PostHog Capture API
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description: |
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> Update: These endpoints can now be accessed with either your Team API
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key or your personal API key.
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As explained in our API overview page, PostHog provides two different
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APIs.
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This page refers to our public endpoints, which use the same API key as
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the PostHog snippet. The endpoints documented here are used solely with
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POST requests, and will not return any sensitive data from your PostHog
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instance.
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> Note: For this API, you should use your 'Project API Key' from the
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'Project' page in PostHog. This is the same key used in your frontend
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snippet.
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Note that this specification is an attempt to capture some of the
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details on the [POST-only public endpoints
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documentation](https://posthog.com/docs/api/post-only-endpoints) but in
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a format that we can easily use to validate the correctness of our API
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implementation. It is not a complete specification of the API, and
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should not be used as such. It will hopefully become such a document,
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but is currently a work in progress.
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### TODOs
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1. add autocapture properties schema
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1. add performance event properties schema
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1. add session recording event properties schema
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1. add any specifications we want to include for other endpoints and GET
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requests e.g. `GET /e/` and `POST /engage/` endpoints.
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paths:
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/capture/:
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post:
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summary: Sending an event
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description: |
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> Note: Timestamp is optional. If not set, it'll automatically be set to the current time.
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Capture an event. Events are the core of PostHog, and are what you use
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to track user behavior, and then analyze and visualize in
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PostHog.
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parameters:
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- in: query
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name: ip
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schema:
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type: string
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format: ipv4
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description: |
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The IP address of the user. This is used to geolocate the user.
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- in: query
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name: compression
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description: |
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The compression method used to compress the request body.
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schema:
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type: string
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enum:
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- gzip-js
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- gzip
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- lz64
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responses:
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'200':
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description: |
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On successful capture of an event or events, we notify you with a
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200 response. A 200 response guarantees that the event was persisted
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by PostHog, but does not guarantee that it will be processed
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successfully.
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content:
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application/json:
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schema:
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$ref: '#/components/schemas/EventsCaptureResponse'
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'401':
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description: |
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If you send an invalid API key, we will return a 401 response.
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content:
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application/json:
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schema:
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$ref: '#/components/schemas/EventsCaptureUnauthenticatedResponse'
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'400':
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description: |
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If you send an invalid request, we will return a 400 response. This
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can happen if you send an invalid JSON payload among
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other things.
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content:
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application/json:
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schema:
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$ref: '#/components/schemas/EventsCaptureClientErrorResponse'
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requestBody:
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content:
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application/json:
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schema:
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$ref: '#/components/schemas/EventCaptureRequest'
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example:
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{
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'api_key': '<ph_project_api_key>',
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'event': '[event name]',
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'properties':
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{ 'distinct_id': "[your users' distinct id]", 'key1': 'value1', 'key2': 'value2' },
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'timestamp': '[optional timestamp in ISO 8601 format]',
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}
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multipart/form-data:
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schema:
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$ref: '#/components/schemas/EventCaptureRequest'
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text/plain:
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examples:
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gzip_event:
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summary: |
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Gzipped request body as per the
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application/json schema.
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description: |
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Provides a method to capture events. Events are the core of PostHog,
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and are what you use to track user behavior, and then analyze and
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visualize in PostHog.
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/batch/:
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post:
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summary: Sending multiple events
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description: |
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You can send multiple events in one go with the Batch API.
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There is no limit on the number of events you can send in a
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batch, but the entire request body must be less than 20MB by
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default (see API overview).
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> Note: Timestamp is optional. If not set, it'll automatically
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be set to the current time.
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parameters:
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- in: query
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name: ip
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schema:
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type: string
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format: ipv4
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description: |
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The IP address of the user. This is used to geolocate the user.
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- in: query
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name: compression
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description: |
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The compression method used to compress the request body.
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schema:
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type: string
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enum:
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- gzip-js
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- gzip
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- lz64
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responses:
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'200':
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description: |
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On successful capture of an event or events, we notify you with a
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200 response. A 200 response guarantees that the event was persisted
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by PostHog, but does not guarantee that it will be processed
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successfully.
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content:
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application/json:
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schema:
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$ref: '#/components/schemas/EventsCaptureResponse'
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'401':
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description: |
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If you send an invalid API key, we will return a 401 response.
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content:
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application/json:
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schema:
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$ref: '#/components/schemas/EventsCaptureUnauthenticatedResponse'
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'400':
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description: |
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If you send an invalid request, we will return a 400 response. This
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can happen if you send an invalid JSON payload among
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other things.
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content:
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application/json:
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schema:
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$ref: '#/components/schemas/EventsCaptureClientErrorResponse'
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requestBody:
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content:
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application/json:
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schema:
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$ref: '#/components/schemas/EventsCaptureRequest'
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example:
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{
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'api_key': '<ph_project_api_key>',
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'batch':
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[
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{
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'event': '[event name]',
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'properties':
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{
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'distinct_id': "[your users' distinct id]",
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'key1': 'value1',
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'key2': 'value2',
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},
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'timestamp': '[optional timestamp in ISO 8601 format]',
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},
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],
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}
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multipart/form-data:
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schema:
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$ref: '#/components/schemas/EventsCaptureRequest'
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text/plain:
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examples:
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gzip_event:
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summary: |
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Gzipped request body as per the
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application/json schema.
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description: |
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Provides a method to capture events. Events are the core of PostHog,
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and are what you use to track user behavior, and then analyze and
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|
|
visualize in PostHog.
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components:
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schemas:
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Event:
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type: object
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additionalProperties: false
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properties:
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event:
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type: string
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offset:
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type: number
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distinct_id:
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type: string
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$distinct_id:
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type: string
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$token:
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type: string
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project_id:
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type: integer
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api_key:
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type: string
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timestamp:
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type: string
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format: date-time
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uuid:
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type: string
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format: uuid
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type:
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type: string
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2023-05-01 14:09:38 +02:00
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$set:
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$ref: '#/components/schemas/SetPersonProperties'
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$set_once:
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$ref: '#/components/schemas/SetOncePersonProperties'
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2023-04-03 19:14:51 +02:00
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properties:
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type: object
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2023-05-01 14:09:38 +02:00
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properties:
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$set:
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$ref: '#/components/schemas/SetPersonProperties'
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$set_once:
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$ref: '#/components/schemas/SetOncePersonProperties'
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2023-04-03 19:14:51 +02:00
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additionalProperties: true
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2023-05-01 14:09:38 +02:00
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SetPersonProperties:
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type: object
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description: |
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Set person property to a given values. If the property does not
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exist, it will be set. If the property already exists, it
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will be updated to the new value. The type of the property
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will be inferred from the value.
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additionalProperties: true
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example:
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$set:
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country: UK
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city: Cambridge
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SetOncePersonProperties:
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type: object
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description: |
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Set person property to a given value, but only if it is not
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currently set. It will not override existing values. The type
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of the property will be inferred from the value.
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example:
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$set_once:
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initial_referrer: https://google.com
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2023-04-03 19:14:51 +02:00
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EventCaptureRequest:
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$ref: '#/components/schemas/Event'
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EventsCaptureRequest:
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anyOf:
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- type: object
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required:
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- 'batch'
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properties:
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api_key:
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type: string
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description: |
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The API key for your project. You can find this in your project
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settings.
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batch:
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type: array
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items:
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$ref: '#/components/schemas/Event'
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- type: object
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required:
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- 'data'
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properties:
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api_key:
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type: string
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description: |
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The API key for your project. You can find this in your project
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settings.
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data:
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oneOf:
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- type: array
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items:
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$ref: '#/components/schemas/Event'
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- type: string
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description: |
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A JSON stringified array of events. Optionally base64 encoded.
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- type: array
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items:
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$ref: '#/components/schemas/Event'
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EventsCaptureResponse:
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type: object
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properties:
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status:
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type: number
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enum: [0, 1]
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example: 1
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EventsCaptureClientErrorResponse:
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type: object
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required:
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- 'type'
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- 'code'
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- 'detail'
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properties:
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type:
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type: string
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enum: ['validation_error']
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code:
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type: string
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example: 'invalid_input'
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detail:
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type: string
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example: 'Malformed request'
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attr:
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type: string
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example: 'api_key'
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EventsCaptureUnauthenticatedResponse:
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type: object
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required:
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- 'type'
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- 'code'
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- 'detail'
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properties:
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type:
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type: string
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enum: ['authentication_error']
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code:
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type: string
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example: 'invalid_token'
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detail:
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type: string
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example: 'Invalid API key'
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