02 · live capture
A2A
Bridge 02 — A2A: agent-to-agent handoffs
- Handler
- services/superagent/src/superagent/handlers/a2a_handler.py
- Stack
- gRPC · task payloads as dicts, strings back
- Surface
- Agent-to-Agent · plus ACP alias route
A2A lets specialised agents stay external and independent while the SuperAgent composes them into one run. A web-scraper agent can summarise a page while a finance agent builds a dashboard — same goal, same audit.
The bridge also carries an ACP alias route, so agents speaking adjacent protocols dispatch through the same pipeline without bespoke glue.
Every handoff is observed: the ExecutionObserver seam records which agent ran, on which protocol, for how long, at what cost — and whether the step verified.