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mcp/harbor
Verified official

IRS 990 Nonprofit Data MCP

v1.1.0

com.olyport/irs-990

Nonprofit lookup and IRS 990 filing data: revenue, assets, and compensation via ProPublica

transport:streamable-http
Website

Target client

run in your project directory 

claude mcp add --transport http irs-990 https://mcp.olyport.com/irs-990/mcp

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs

This listing does not declare its tools. Connect the server and your client will discover them on the handshake.