Send a Twitch whisper from a bot account and handle the platform's whisper rate limits and silent-drop behavior
domain: dev.twitch.tv · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Confirm the sending account has a verified phone number in its Security and Privacy settings, since unverified accounts cannot send whispers at all
POST to the Send Whisper endpoint with from_user_id, to_user_id, and a JSON body containing the message field, using a User Access Token scoped user:manage:whispers
Track that a 500-character limit applies the first time you whisper a given recipient, rising to 10,000 characters once you've whispered them before
Cap outbound whispers at 40 unique recipients per day, and no more than 3 per second / 100 per minute within that daily limit
Subscribe to the Whisper Received EventSub type (user:read:whispers or user:manage:whispers scope) to receive incoming whispers, since the send API is one-directional
Known gotchas
A 204 No Content response does not guarantee delivery — Twitch can silently drop a whisper it suspects violates policy and still returns 204 as if it succeeded
Verified bot status does not raise the whisper rate limits; Twitch's docs state explicitly there is no way to get a higher whisper limit at all
A user can disable whispers from strangers in their settings, in which case the send call returns a 400 error rather than succeeding silently
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