mcpbeat

Nonprofit Explorer MCP Server

io.github.cyanheads/nonprofit-explorer-mcp-server
answering

Nonprofit Explorer MCP Server is answering right now. Last checked 7 min ago. 59 installs a week from npm. It exposes 3 tools. Last commit 30 Jul 2026.

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

Installs per day peak 30 · avg 11 · -5% w/w
a month agotoday
Uptime history 39 hours of history · worst hour 75%
39 hours agonow
100.0%
Uptime 24h
91 of 91 checks
3
Tools
read from the server
379 ms
Response time
average over 24h
59
Installs / week
npm and PyPI

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 7 min ago.

run in your terminal
claude mcp add nonprofit-explorer-mcp-server --transport http https://nonprofit-explorer.caseyjhand.com/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "nonprofit-explorer-mcp-server": {
      "url": "https://nonprofit-explorer.caseyjhand.com/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.nonprofit-explorer-mcp-server]
url = "https://nonprofit-explorer.caseyjhand.com/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "nonprofit-explorer-mcp-server": {
      "url": "https://nonprofit-explorer.caseyjhand.com/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "nonprofit-explorer-mcp-server": {
      "url": "https://nonprofit-explorer.caseyjhand.com/mcp"
    }
  }
}

Available tools 3

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

nonprofit
nonprofit_get_filings
All Form 990 filings for a tax-exempt org by EIN: year-by-year revenue, expenses, assets, program-expense ratio (with inputs shown), executive compensation, and source PDF/XML 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. Program expense ratio is computed as (total_expenses − officer comp − other wages − fundraising) / total_expenses for 990/990-EZ; not available for 990-PF. 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.
nonprofit_get_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). 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.
nonprofit_search
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. Supports quoted phrases ("Red Cross"), required terms (+evanston), excluded terms (-dental). Data from ProPublica Nonprofit Explorer, sourced from IRS Form 990 filings.

Endpoints

URLTransportStateLatencyChecked
https://nonprofit-explorer.caseyjhand.com/mcp streamable-http answering 401 ms 7 min ago

Nonprofit Explorer MCP Server — questions

Answers built from our own checks of this server.

What can Nonprofit Explorer MCP Server do?
It exposes 3 tools, read directly from the server on our last check. Among them: nonprofit_get_filings, nonprofit_get_organization, nonprofit_search. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is Nonprofit Explorer MCP Server working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 379 ms. The bar chart above shows every period we have measured.
How do I connect Nonprofit Explorer MCP Server?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Nonprofit Explorer MCP Server need an API key?
No. Nonprofit Explorer MCP Server completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 3 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Nonprofit Explorer MCP Server?
It answers our handshake in 379 ms on average, which is faster than 36% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.
How many people use Nonprofit Explorer MCP Server?
The npm package @cyanheads/nonprofit-explorer-mcp-server was installed 59 times in the last week. Week over week that is -5%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Nonprofit Explorer MCP Server open source?
Yes — it is published under the Apache-2.0 licence, written in TypeScript, 2 stars on GitHub and 3 open issues. The source link is on this page, so you can read exactly what it does with your data before you connect it.