API
Add a note to a thread
Pin a private note to a thread.
POST/threads/{id}/notes
Runs the real call on your workspace.
POST /threads/{id}/notes
Pin a private note to a thread.
Example
Needs threads:write. content is up to 20,000 characters, color is one of default, red, orange, yellow, green, blue, purple and pink, and pinned keeps the note at the top. Answers 201 with the note.
curl -X POST "$OE/threads/thr_7c1e4a90/notes" -H "$AUTH" -H "Content-Type: application/json" \ -d '{ "content": "Waiting on the signed contract before replying.", "color": "yellow", "pinned": true }'{ "object": "note", "id": "b3d1f0c2-7a4e-4f7b-9c1d-2e8f6a5b4c3d", "threadId": "thr_7c1e4a90", "content": "Waiting on the signed contract before replying.", "color": "yellow", "pinned": true, "order": 4, "createdAt": "2026-09-30T09:12:44.000Z", "updatedAt": "2026-09-30T09:12:44.000Z"}A new note goes after the others. Sending the same request twice adds two notes.