990.tax nonprofit lookup for Claude Code

tax.990/nonprofit-lookup

IRS records on US nonprofits: exempt status, revocations, Form 990 financials, due dates, stats.

client:Claude Code transport:streamable-http tools:8

Install 990.tax nonprofit lookup in Claude Code

run in your project directory

claude mcp add --transport http nonprofit-lookup https://990.tax/mcp

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