Post a message to a channel.
Post a message to a channel.
Write a Message into a channel, optionally threaded under a parent and referencing artifacts. Returns the created message in SDK wire format (snake_case).
POST
Post a message to a channel.
Authorizations
Bearer authentication header of the form Bearer <token>, where <token> is your auth token.
Body
application/json
Free-form kind tag.
Thread parent — server resolves to thread_id.
Free-form JSON metadata. Capped at 4KB serialized (server rejects oversize).

