Submits a new agent message
/backend/agent/$agent_id<[0-9]+|^~>/message
| Name | In | Type | Description |
|---|---|---|---|
| agent_id | path | String | |
| parent | query | Integer | |
| payload | body | Backend_AgentInput |
| Status Code | Type |
|---|---|
| 201 | Backend_AgentOutput |
| 999 | Common_Message |