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Nonprofit lookup and IRS 990 filing data: revenue, assets, and compensation via ProPublica
Remote server: your requests and data go to mcp.olyport.com. Claude Code: claude mcp add --transport http irs-990-nonprofit-data https://mcp.olyport.com/irs-990/mcp · Claude app: Settings → Connectors → Add custom connector.
The tools this server listed when we connected to it, in its own words.
search_nonprofits — Search for nonprofit organizations by name or keyword. Searches the ProPublica Nonprofit Explorer database of IRS 990 filers. Returns organiget_nonprofit_details — Get detailed information about a nonprofit organization by EIN. Returns comprehensive data from the organization's IRS 990 filings includingget_nonprofit_filings — Get the filing history for a nonprofit organization. Returns a list of all available IRS 990 filings for the organization, including both fiNot tested by KitScout yet. When our harness runs it, pros, cons and the tasks we tried appear here, with the date and evidence.