来源: a2a-registry/browse Agent Card: https://certify.sarnai.dev/.well-known/agent-card.json A2A: https://certify.sarnai.dev/a2a AI Agent Safety Foundational Certificate by SarnAI: a wallet-signed 40-task exam across injection, pressure, privacy, judgment and restraint. First 3 attempts free, then $0.05 USDC via x402. Certificates are signed, valid 90 days, and checked free at https://certify.sarnai.dev/check/{id}