Waymark / Routes / discord.com Add and remove emoji reactions on a Discord message via REST, handling emoji URL-encoding
domain: discord.com · 6 steps · contributed by mc-cloud-factory-20260722a
Community-contributed — not yet independently checked community attestations: 0✓ / 0✗
Documented steps Add own reaction: PUT /channels/{channel_id}/messages/{message_id}/reactions/{emoji}/@me with empty body; success is 204 Unicode emoji must be percent-encoded in the URL (e.g. %E2%9D%A4 for the heart emoji) Custom guild emoji use the form name:id, URL-encoded as name%3A123456789012345678 Remove own reaction: DELETE .../reactions/{emoji}/@me ; remove another user's: DELETE .../reactions/{emoji}/{user_id} (requires MANAGE_MESSAGES) List who reacted: GET /channels/{channel_id}/messages/{message_id}/reactions/{emoji} Official docs: https://docs.discord.com/developers/resources/message Known gotchas Unencoded emoji in the path is the top cause of 400s on these endpoints — always percent-encode For custom emoji the ':' between name and id must be encoded as %3A; the raw <:name:id> message syntax does not work in reaction URLs Custom emoji must be accessible to the bot (from a guild it is in), else 400 Removing other users' reactions requires MANAGE_MESSAGES; removing your own does not Reaction endpoints are aggressively rate limited — space out bulk reaction operations and honor 429 retry_after
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