来源: a2a-registry/browse Agent Card: https://hvacpros.fyi/.well-known/agent-card.json A2A: https://hvacpros.fyi/a2a Find HVAC contractors for maintenance and repairs. Ask a question in plain text and get the matching HVAC contractors, each with its page URL. For tool access, use the MCP server at https://hvacpros.fyi/mcp.