Greencalculus MCP vs Method Crm MCP

In-depth architectural comparison of the Greencalculus MCP and Method Crm MCP 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 Greencalculus MCP when:

• You need dedicated capabilities in the Data Platforms domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• Primary tools included: lookup_factor, lookup_factors, search_factors.

Explore Greencalculus MCP Details

Choose Method Crm MCP when:

• You need dedicated capabilities in the Data Platforms domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: API Key required (BYOK (Pay Provider Direct)).
• You have access to required keys: METHOD_API_KEY, METHOD_API_BASE_URL, METHOD_TRANSPORT, METHOD_HTTP_PORT.
• Primary tools included: method_tables_query, method_tables_get, method_tables_create.

Feature & Specification Comparison

Specification	Greencalculus MCP jeremiahsay Data Platforms	Method Crm MCP avisangle Data Platforms
Summary	Sourced greenhouse-gas emission factors and audit-traced carbon calculations (activity, embodied EN 15978, PCAF financed emissions) — every value returns with its exact source cell and data version, so answers are citable and reproducible. 13,000+ factors, 11 tools. Install: npx -y greencalculus-mcp, or connect remotely at https://mcp.greencalculus.com. Free tier, no card.	Production-ready MCP server for Method CRM API integration with 20 comprehensive tools for tables, files, users, events, and API key management. Features rate limiting, retry logic, and dual transport support (stdio/HTTP).
Category & Scope

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": {
    "jeremiahsay-greencalculus-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "greencalculus-mcp"
      ]
    }
  }
}

{
  "mcpServers": {
    "avisangle-method-crm-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/inspector"
      ],
      "env": {
        "METHOD_API_KEY": "YOUR_METHOD_API_KEY_HERE",
        "METHOD_API_BASE_URL": "YOUR_METHOD_API_BASE_URL_HERE",
        "METHOD_TRANSPORT": "YOUR_METHOD_TRANSPORT_HERE",
        "METHOD_HTTP_PORT": "YOUR_METHOD_HTTP_PORT_HERE"
      }
    }
  }
}

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