Generate a Zoom Video SDK session authentication JWT to join a video session
domain: developers.zoom.us · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Retrieve your Video SDK key and secret from the Zoom App Marketplace Video SDK app credentials
Build a JWT signed HS256 with the SDK secret, setting app_key to the SDK key, tpc to the session name the client will join, and role_type to 1 for host/co-host or 0 for participant
Set version to 1, and iat/exp such that the token lifetime is at least 1800 seconds and no more than 48 hours
Optionally set user_key to identify the joining user (this field replaced the older user_identity claim) and session_key if reusing a persistent session identifier
Pass the signed JWT as the token/signature parameter when the client SDK joins the session — Video SDK session join is JWT-only, with no OAuth alternative
Known gotchas
user_key is the current claim name; docs explicitly note it replaced the older user_identity field, so older sample code using user_identity is stale
tpc must exactly match the session name the client requests to join, or the join is rejected
exp has a hard floor (≥1800s) and ceiling (≤48h) from iat — tokens outside that window are rejected outright
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