GitDealFlow speaks A2A.

Framework recipes

Each page is a working integration: install steps, the recommended code path, an alternative path, what to ask, and gotchas. Pick the runtime you already use.

The 30-second curl

curl -X POST https://signals.gitdealflow.com/api/a2a \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"message/send","params":{"message":{"role":"user","parts":[{"kind":"text","text":"trending"}]}}}'

Returns a Task with status.state="completed" and 20 startups in the artifact data part. Each row carries commit velocity, contributor growth, signal classification, and a GitHub URL. No auth header. That is the point.

When your agent wants the deep signal

The five A2A skills above stay free, forever, no auth. When you wire the signal into a production agent and want the full per-startup deep read on every call, there is a paid lane built for machines: €19 for 100 deep-signal calls (€0.19 each). Pay with a credit pack, or pay per call in USDC on Base via x402, no contract, no sales call, credits never expire.

Not wiring an agent? You are a human who invests. Get the free Sunday digest or grab a €7 First Look same signals, read for you instead of your code.

What is A2A?

The Agent2Agent (A2A) protocol is an open standard from Google for agent-to-agent communication. Each agent publishes a JSON AgentCard describing its skills, plus a JSON-RPC 2.0 endpoint that other agents call to send messages and receive task results. By April 2026 it had passed 22,000 GitHub stars and 150+ organizations onboard.

A2A is complementary to MCP. MCP exposes tools to a single AI assistant (Claude Desktop, Cursor, Windsurf). A2A lets agents call other agents across the network. We ship both because the audiences are different. The five skills, the data, and the methodology are identical, only the transport differs.

The full launch story is at /blog/a2a-launched. The methodology paper is on SSRN at abstract=6606558.