Propublica Nonprofit

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ProPublica Nonprofit MCP — ProPublica Nonprofit Explorer API (free, no auth)

3 tools
0ms auth
free tier 50 calls/day

Tools

search_nonprofits

Search US nonprofits by name. Returns EIN, name, city, state, revenue, assets, and NTEE code. Example: search_nonprofits("red cross", "NY"). Use get_organization with the EIN for full details.

No parameters required.

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get_organization

Get full nonprofit details by EIN (Employer Identification Number). Returns organization info plus recent IRS filings with revenue, expenses, and assets. Example: get_organization(131710957).

No parameters required.

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get_filing

Get a specific IRS filing for a nonprofit. Returns financial data from one tax period including revenue, expenses, assets, and liabilities. Example: get_filing(131710957, 202112).

No parameters required.

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Test with curl

The gateway speaks JSON-RPC 2.0 over HTTP POST. You can test any pack directly from the terminal.

List available tools
bash 
curl -X POST https://gateway.pipeworx.io/propublica-nonprofit/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'
Call a tool
bash 
curl -X POST https://gateway.pipeworx.io/propublica-nonprofit/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":2,"method":"tools/call","params":{"name":"search_nonprofits","arguments":{}}}'