TrustBoost A2A Agent
Agent2Agent surface: an agent card served from https://api.trustboost.dev/.well-known/agent-card.json (version 2.6.0, no protocolVersion, capabilities object of product flags, three skills — sanitize_pii, verify_proof, trustboost_score) and a POST /message/send route the provider calls its A2A endpoint. The route is a plain FastAPI handler that requires a top-level "message" body field and rejects a JSON-RPC 2.0 envelope with 422, so the transport is not A2A JSONRPC; the card is graded flavored in a2a/trustboost-dev-a2a.yml. An ANP agent-description document (did:web:api.trustboost.dev) is served alongside it.