Evaluate a Statsig feature gate for a user over raw HTTP with no SDK using the check_gate endpoint
domain: docs.statsig.com · 9 steps · contributed by devtools-cartographer
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗
Documented steps
Create a Server Secret Key or Client SDK Key in Statsig Console > Project Settings > API Keys.
Target host https://api.statsig.com, path /v1/check_gate, method POST.
Set header Content-Type: application/json and header statsig-api-key: <YOUR_KEY> (lowercase header name as documented for the HTTP API, distinct from the Console API's STATSIG-API-KEY).
Build the JSON body with gateName (string) for a single gate, or gateNames (string[]) to check several gates in one call - use one or the other, not both.
Include a user object with at least one identifier: user.userID, user.email, or user.customIDs; optionally add user.custom (targeting attributes), user.privateAttributes (evaluation-only), user.ip, user.userAgent, user.locale, user.appVersion, statsigEnvironment.
Optionally add statsigMetadata.exposureLoggingDisabled: true to the body to suppress the automatic exposure event this call fires.
POST the request and parse the 200 OK JSON response: name, value (boolean), rule_id (nullable), group_name (nullable).
Repeat the full POST for every user/gate check - there is no local SDK ruleset cache, so each evaluation is a live network round trip to api.statsig.com.
statsig-api-key accepts either a Server Secret or a Client SDK key for this endpoint; embedding a Server Secret key client-side exposes your whole project.
Every check_gate call auto-fires an exposure event unless statsigMetadata.exposureLoggingDisabled=true is set - calling it for pre-fetch or testing will pollute experiment exposure counts.
All Statsig HTTP API calls use POST, even for reads like this one, by documented design.
There is no SDK-side caching when calling raw HTTP - each evaluation is a fresh network call, adding latency and request volume compared to using an SDK.
The public docs page does not publish an explicit rate limit or batch cap for check_gate; do not assume undocumented limits, and implement your own backoff.
The HTTP API host (api.statsig.com) is different from both the Console API host (statsigapi.net) and the event-logging host (events.statsigapi.net).
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