captain-drawdown-mcp

An MCP server that gives Claude, ChatGPT, Cursor and other MCP clients direct access to Captain Drawdown's open data on carbon dioxide removal (CDR):

• Companies: 969 published CDR companies with pathway, country, liveliness tier, EU SME size class, registries and evidence dates (CC BY-NC-SA 4.0).
• Researchers: 95,000+ researchers with CDR papers since 2021, aggregated by country and pathway, plus top-100 lists per pathway (CC BY 4.0).
• Shops: shops where individuals buy certified removal, with prices (CC BY 4.0).

It reads the public static API at https://captaindrawdown.com/api/v1/ (no key, CORS open) and caches responses for six hours. Every result carries version, as_of, license and cite_as.

Install

pip install captain-drawdown-mcp      # or: uvx captain-drawdown-mcp

Claude Desktop / Claude Code (claude mcp add captain-drawdown -- captain-drawdown-mcp) or claude_desktop_config.json:

{"mcpServers": {"captain-drawdown": {"command": "captain-drawdown-mcp"}}}

Cursor (.cursor/mcp.json): same command. Any client that speaks MCP over stdio works.

Tools

Data and licences

Pages: https://captaindrawdown.com/data/ · API: https://captaindrawdown.com/api/ · Corrections: info@carbon-drawdown.de. The server code is MIT; the data keeps its own licences (companies CC BY-NC-SA 4.0 because the directory is seeded from Grant Faber's list; researchers and shops CC BY 4.0).

Captain Drawdown is a project of the Carbon Drawdown Initiative (Fürth, Germany).