{"transport":"JSON-RPC 2.0 over HTTP POST","method":"message/send","agentCard":"https://pulsefeed.dev/.well-known/agent-card.json","example":{"jsonrpc":"2.0","id":1,"method":"message/send","params":{"message":{"role":"user","messageId":"1","parts":[{"kind":"text","text":"Is https://api.example.com/x402/data safe to pay?"}]}}}}