How to connect
Same URL, five paste targets. Ready surface · Auth required. Not a safe-to-install badge. Handshake this URL
Paste into Settings → MCP or .cursor/mcp.json.
{
"mcpServers": {
"cyanheads-nonprofit-explorer-mcp-server": {
"url": "https://nonprofit-explorer-mcp-server--cyanheads.run.tools"
}
}
}
Paste into .vscode/mcp.json.
{
"mcpServers": {
"cyanheads-nonprofit-explorer-mcp-server": {
"url": "https://nonprofit-explorer-mcp-server--cyanheads.run.tools"
}
}
}
Settings → Connectors → Add → Custom → Web. Paste the URL. Enable in a new chat.
Claude → Settings → Connectors → Add → Custom → Web
Name: nonprofit-explorer-mcp-server
URL: https://nonprofit-explorer-mcp-server--cyanheads.run.tools
OAuth only if this server requires it.
Save, start a new chat, enable the connector.
Developer mode custom connector. ChatGPT cannot reach localhost.
Settings → Apps & Connectors → Advanced → Developer mode ON
Create custom connector
Name: nonprofit-explorer-mcp-server
MCP server URL: https://nonprofit-explorer-mcp-server--cyanheads.run.tools
Auth: none unless the server requires OAuth
New chat → + → Developer mode → enable the connector
Register the HTTPS URL, then claude mcp list.
claude mcp add --transport http cyanheads-nonprofit-explorer-mcp-server \
https://nonprofit-explorer-mcp-server--cyanheads.run.tools
Pass on session/new as mcpServers when the agent advertised HTTP MCP.
[
{
"type": "http",
"name": "cyanheads-nonprofit-explorer-mcp-server",
"url": "https://nonprofit-explorer-mcp-server--cyanheads.run.tools"
}
]
Paste into a README or docs site. The widget loads snippets from Influzer — still not a SAFE badge.
Same handshake clock as this listing (overlay / warm / seed; live tools/list only if that is missing). Indigo is live_ok, amber is auth_required, gray is unreachable. Not a SAFE badge. Stdio listings have no badge.
[](https://www.influzer.ai/mcp/probe?url=https%3A%2F%2Fnonprofit-explorer-mcp-server--cyanheads.run.tools)
<div data-influzer-install="cyanheads-nonprofit-explorer-mcp-server"></div>
<script async src="https://www.influzer.ai/embed/install.js"></script>
https://www.influzer.ai/embed/mcp/cyanheads-nonprofit-explorer-mcp-server.md
JSON: https://www.influzer.ai/api/v1/install/cyanheads-nonprofit-explorer-mcp-server
Recipes using this server
No published recipes yet for this server.
Listing quality
Observable facts from our catalog and daily probe — not a safe-to-install badge.
- Surface
- Ready surface
- Auth gate
- Auth gate
- Tools source
- tools/list (live)
Observable catalog + probe facts — not a safe-to-install badge. How we verify.
Verification summary
Stored signals only. Not a safety score.
- Verification grade
- B (75)
- Last verified
- Status
- Auth required
- Response time
- 0 ms
- Auth
- Auth gate
- Transport
- http, HTTPS
- Tools indexed
- 3
- 30-day uptime
- 100% of 2 samples over 2 days
Probe history
- · auth_required · 0 ms
- · auth_required · 0 ms
Tools
(3)-
nonprofit_searchSearch 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
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nonprofit_get_organizationFull 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.
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nonprofit_get_filingsAll 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
Tool source: tools/list (live) · last probed 2026-11-04