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com.greencalculus/api

Official registry Security

Sourced carbon emission factors + audit-traced calculations an AI can cite.

Website

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http api 'https://mcp.greencalculus.com' --header 'Authorization: <Bearer <your GreenCalculus API key> — free at greencalculus.com/developers. Optional: search_factors and explain_absence answer without one.>'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "api": {
            "type": "http",
            "url": "https://mcp.greencalculus.com",
            "headers": {
                "Authorization": "<Bearer <your GreenCalculus API key> — free at greencalculus.com/developers. Optional: search_factors and explain_absence answer without one.>"
            }
        }
    }
}
NPM package greencalculus-mcp
Claude Code 
claude mcp add api -e 'GREENCALCULUS_API_KEY=<your greencalculus_api_key>' -- npx -y greencalculus-mcp@1.0.4
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "api": {
            "command": "npx",
            "args": [
                "-y",
                "greencalculus-mcp@1.0.4"
            ],
            "env": {
                "GREENCALCULUS_API_KEY": "<your greencalculus_api_key>"
            }
        }
    }
}

Environment variables

  • GREENCALCULUS_API_KEY secret GreenCalculus API key — free at greencalculus.com/developers. Without one, search_factors and explain_absence still work; the other ten tools are refused.

Frequently asked questions

What is com.greencalculus/api?

Sourced carbon emission factors + audit-traced calculations an AI can cite.

How do I install com.greencalculus/api?

It runs as a remote server. In Claude Code: claude mcp add --transport http api 'https://mcp.greencalculus.com' --header 'Authorization: <Bearer <your GreenCalculus API key> — free at greencalculus.com/developers. Optional: search_factors and explain_absence answer without one.>'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does com.greencalculus/api need an API key?

Yes. It expects GREENCALCULUS_API_KEY, Authorization, which you set in its configuration.

Who maintains com.greencalculus/api?

It is published by com.greencalculus. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.