Agents supports A2A protocol
The Agent-to-agent (A2A) protocol provides standardized and secure communication between external agents and agents built with Retool, so you can trigger your agent from an external agent, or embed agents in your own systems.
Currently, Retool supports ingress into Retool agents from an external agent.
Retool has implemented the core set of A2A functionality, so you can:
- View an agent card.
- Send a message.
- Poll for updates on tasks.
- Stream processing or task updates via Server-Sent Events (SSE).
- Cancel tasks.
To allow external agents to communicate with Retool agents, you can enable the A2A trigger on your agent's configuration page, and copy the endpoint and API key into your A2A client. The A2A client then sends messages via common messaging formats like the HTTP+REST and JSON-RPC APIs, and Server-Sent Events (SSE) for long-running streaming updates.
Explore the following pages for more information:
- Set up an A2A trigger to learn how to enable the A2A trigger.
- A2A endpoints to learn how to cURL for endpoint responses.
- A2A tutorial to learn how to trigger your agent from an external agent.