Sends an ephemeral message to a user in a channel. Only the given user sees it, and it is not persisted. Requires chat:write.
/chat.postEphemeral
| Name | In | Type | Description |
|---|---|---|---|
| payload | body | Post_Ephemeral_Request |
| Status Code | Type |
|---|---|
| 200 | Post_Ephemeral_Response |
| 999 | Error |