Send A2A v1 message
POST/v2/agents/:agent_key/message:send
Sends a message to the agent using the A2A v1 wire format. Blocks until the agent reaches a terminal or interrupted state. Returns the resulting task, or a direct message reply for stateless interactions.
To continue an existing conversation, set message.contextId to the prior task's id.
A message that opens a new session is subject to the agent's run_condition. When it evaluates to false no session is created and the call returns an InvalidRequestError.
Request
Responses
- 200
- 400
- 404
Send-message response — exactly one of task or message.
The request was malformed.
Agent or referenced context not found.