# nonprofit-explorer-mcp-server MCP server

MCP server for nonprofit financials via ProPublica — IRS Form 990 data for 1.8M+ nonprofits.

## Links
- Registry page: https://www.getdrio.com/mcp/io-github-cyanheads-nonprofit-explorer-mcp-server
- Repository: https://github.com/cyanheads/nonprofit-explorer-mcp-server

## Install
- Command: `npx -y @cyanheads/nonprofit-explorer-mcp-server`
- Endpoint: https://nonprofit-explorer.caseyjhand.com/mcp
- Auth: Not captured

## Setup notes
- Package: Npm @cyanheads/nonprofit-explorer-mcp-server v0.1.4
- Environment variable: MCP_LOG_LEVEL (default info)
- Package: Npm @cyanheads/nonprofit-explorer-mcp-server v0.1.4
- Environment variable: MCP_HTTP_HOST (default 127.0.0.1)
- Environment variable: MCP_HTTP_PORT (default 3010)
- Environment variable: MCP_HTTP_ENDPOINT_PATH (default /mcp)
- Environment variable: MCP_PUBLIC_URL
- Environment variable: MCP_AUTH_MODE (default none)
- Environment variable: MCP_LOG_LEVEL (default info)
- Remote endpoint: https://nonprofit-explorer.caseyjhand.com/mcp

## Tools
- nonprofit_search (Search Nonprofits) - Search 1.8M+ IRS-recognized tax-exempt organizations by name, keyword, city, or phrase. Optionally narrow by US state, NTEE major sector (1–10), or 501(c) subsection type. Returns EINs — pass them to nonprofit_get_organization or nonprofit_get_filings for details. Results are paginated at 25 per page; use the page parameter and num_pages to paginate. Total results cap at 10,000 in the API; if total_results === 10000 the actual count may be higher. A zero-match query and a page past the last one both return an empty organizations array with a notice rather than an error; only a page whose offset reaches that 10,000 cap is refused. Supports quoted phrases ("Red Cross"), required terms (+evanston), excluded terms (-dental). Data from ProPublica Nonprofit Explorer, sourced from IRS Form 990 filings. Endpoint: https://nonprofit-explorer.caseyjhand.com/mcp
- nonprofit_get_organization (Get Nonprofit Organization) - Full profile for a single tax-exempt org by EIN: legal name, address, NTEE classification, 501(c) type, IRS ruling date, and a financial snapshot from the most recent Form 990 filing (revenue, expenses, assets, net assets, and the source PDF link). Also returns the IRS Business Master File standing — whether contributions are deductible, exemption status, and public-charity vs. private-foundation classification. Use nonprofit_search first if you only have an org name — this tool requires an EIN. Data lags 1–2 years; the tax year is shown prominently. Data from ProPublica Nonprofit Explorer, sourced from IRS Form 990 filings. Endpoint: https://nonprofit-explorer.caseyjhand.com/mcp
- nonprofit_get_filings (Get Nonprofit Filings) - All Form 990 filings for a tax-exempt org by EIN: year-by-year revenue, expenses, assets, liabilities, net assets, revenue breakdown, executive compensation, and source PDF links. Use for trend analysis, due diligence, and accessing primary 990 documents. The filing year (tax_prd_yr) is the fiscal year of the return — data lags 1–2 years; always cite the year. An organization that resolves but has filed no 990 returns an empty filings array with a notice, not an error. Also returns filings_pdf_only — older filings with a PDF but no extracted financial data. Data from ProPublica Nonprofit Explorer, sourced from IRS Form 990 filings. Endpoint: https://nonprofit-explorer.caseyjhand.com/mcp

## Resources
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## Prompts
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## Metadata
- Owner: io.github.cyanheads
- Version: 0.1.4
- Runtime: Npm
- Transports: STDIO, HTTP
- License: Not captured
- Language: Not captured
- Stars: Not captured
- Updated: Jun 20, 2026
- Source: https://registry.modelcontextprotocol.io