AgentPhone vs HVAC Builder

In-depth architectural comparison of the AgentPhone and HVAC Builder MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

Which MCP Server Should You Choose?

Choose AgentPhone when:

• You need dedicated capabilities in the Developer Tools domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore AgentPhone Details

H

Choose HVAC Builder when:

• You need dedicated capabilities in the Developer Tools domain.
• You prefer remote streaming HTTP/SSE transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore HVAC Builder Details

Feature & Specification Comparison

Specification	AgentPhone Developer Tools	H HVAC Builder Developer Tools
Summary	Give AI agents real phone numbers, messages, and voice calls via MCP.	Design, solve and simulate HVAC systems from real components, weather years and buildings.
Category & Scope	Developer Tools	Developer Tools
Quality signal

Tools & Capabilities Breakdown

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

{
  "mcpServers": {
    "agentphone": {
      "command": "npx",
      "args": [
        "-y",
        "agentphone-mcp"
      ]
    }
  }
}

{
  "mcpServers": {
    "hvac-builder": {
      "url": "https://hvacbuilder.app"
    }
  }
}

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