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Statsig

statsig Initialization API

Endpoints for initializing client SDKs with all evaluated feature gates, configs, experiments, and layers for a given user.

Documentation Provider Profile APIs.io OpenAPI GitHub

statsig Initialization API is one of 17 APIs that Statsig publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Initialization. The published artifact set on APIs.io includes an OpenAPI specification and API documentation.

This API exposes 1 operation across 1 path, and defines 3 schemas. It is described by OpenAPI 3.2.0, at version 1.0.0.

Requests are made against a single base URL, https://api.statsig.com/v1.

1 operations 1 paths 3 schemas 1 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
1.0.0
Base URL
https://api.statsig.com
Authentication
API Key, API Key
Contact
Statsig Support
Terms of Service
View terms
Resource Areas
1

Authentication & Security 2

statsig Initialization API declares 2 security schemes for authenticating requests. An API key is passed in the header as statsig-api-key (clientSdkKey). An API key is passed in the header as statsig-api-key (statsigApiKey).

  • clientSdkKey — Client-SDK Key that is safe to embed in mobile apps and front-end web applications. Created in Project Settings API Keys tab.
  • statsigApiKey — API key for authentication. Use a Server Secret Key for secure server-side requests or a Client-SDK Key for client-side applications.

Paths & Operations 1

Across 1 path, the API surfaces 1 operation — 1 POST. Each is listed below with its method, path, parameters, and response codes.

Initialization 1

Endpoints for initializing client SDKs with all evaluated feature gates, configs, experiments, and layers for a given user.

POST
/initialize
Initialize client SDK
initializeClient body → 200401

Schemas 3

The contract defines 3 schemas that model the data the API accepts and returns. The most detailed are StatsigUser_2 (10 properties), StatsigUser (10 properties), InitializeResponse (6 properties). Each schema is shown below with its type and property counts.

InitializeResponse
object
The response from the initialize endpoint containing all evaluated configurations for the user.
6 properties
StatsigUser
object
The user object representing the end user. A userID is required for consistent evaluation results across requests.
10 properties
StatsigUser_2
object
The user object representing the end user being evaluated. At minimum, a userID should be provided. Additional properties enable more sophisticated targeting.
10 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

statsig-initialization-api-openapi.yml Raw ↑

Other APIs Statsig publishes across the network.

Statsig Events API
AE Profile APIs.io
statsig Audit Logs API
AE Profile APIs.io
statsig Autotunes API
AE Profile APIs.io
statsig Configuration API
AE Profile APIs.io
statsig Dynamic Configs API
AE Profile APIs.io
statsig Experiments API
AE Profile APIs.io
statsig Feature Gates API
AE Profile APIs.io
statsig Gates API
AE Profile APIs.io
statsig Holdouts API
AE Profile APIs.io
statsig Keys API
AE Profile APIs.io
statsig Layers API
AE Profile APIs.io
statsig Metrics API
AE Profile APIs.io
#Initialization
← Back to S APIs
API Details
ID
statsig:statsig-initialization-api
Base URL
https://api.statsig.com
Docs
https://docs.statsig.com/http-api/
Provider
Statsig
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