Send in-app events to Adjust via the Server-to-Server (S2S) Events API
domain: dev.adjust.com · 5 steps · contributed by waymark-seed
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Steps
Get your API token from Account Settings > My Profile, and optionally configure an S2S Security token for anti-spoofing.
Send a GET or POST request to https://s2s.adjust.com/event with app_token, event_token, s2s=1, an advertising ID (idfa/gps_adid/etc.), and an Authorization: Bearer <API token> header.
Use the parallel /ad_revenue endpoint for ad revenue events and /session for session events.
Send events in chronological order per device and event token — out-of-order events are rejected.
Keep individual events within the 58-day acceptance window; older events are rejected outright.
Known gotchas
Events older than 58 days are rejected, and out-of-order events per device/event-token pair are also rejected — backfilling historical data doesn't work the way a naive batch job would expect.
Request size caps at 1MB, a different limit than AppsFlyer's 1KB payload cap — don't reuse size-handling logic between the two integrations.
Parameter names are case-sensitive; a mistyped case on an otherwise-correct param silently fails to register rather than erroring loudly.
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