{"service": "ZONGYUAN-ROOT 云端A2A联邦 · 开放加入", "mode": "open_federation", "how_to_join": "POST /register 或 /node_register 提交节点注册(JSON: name/brand/endpoint/contact/capabilities)", "register_endpoint": "https://www.huodouai.com/a2a/register", "discovery": "https://www.huodouai.com/.well-known/agent.json", "federation_mode": "homologous(full) + external(registered_restricted)", "anchor": "DID-BR-000002"}