Flagsmith Flags API
The Flagsmith Flags API is the public-facing REST API that client-side and server-side SDKs use to retrieve feature flag values and remote configuration for environments and users. It uses a non-secret Environment Key for authentication and is designed to be fast, scalable, and publicly accessible. The Edge API endpoint at edge.api.flagsmith.com serves requests from AWS Lambda functions running in data centers near the client, providing low-latency global access to flag evaluations.
Flagsmith Flags API is one of 9 APIs that flagsmith publishes on the APIs.io network, described by a machine-readable OpenAPI specification.
Tagged areas include Edge, Feature Flags, Flags, Remote Config, and SDK. The published artifact set on APIs.io includes API documentation and an OpenAPI specification.
This API exposes 1 operation across 1 path, and defines 3 schemas. It is described by OpenAPI 3.1.0, at version 1.0.
Requests are made against a single base URL, https://api.flagsmith.com/api/v1.
Metadata
The identity and technical contract details declared by the specification.
Authentication & Security 1
Flagsmith Flags API declares
1 security scheme
for authenticating requests.
An API key is passed in the header as Authorization (apiKeyAuth).
By default, every request must be authenticated.
apiKeyAuth— A secret Organisation API Token prefixed with 'Api-Key'. For example, 'Api-Key your-token-here'. This token should never be exposed in client-side code.
Paths & Operations 1
Across 1 path, the API surfaces 1 operation — 1 GET. Each is listed below with its method, path, parameters, and response codes.
Retrieve feature flags for an environment. Returns the current state of all feature flags including their enabled status and values.
Schemas 3
The contract defines 3 schemas that model the data the API accepts and returns. The most detailed are Flag (7 properties), Feature (7 properties), Error (1 property). Each schema is shown below with its type and property counts.
Specification
The full machine-readable OpenAPI contract behind this narrative.
Source
More from flagsmith 8
Other APIs flagsmith publishes across the network.
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