Nonprofit Explorer Mcp Server
Research U.S. nonprofit finances and Form 990 filings through ProPublica Nonprofit Explorer while validating grant, civic, or B2B nonprofit ideas.
Overview
Nonprofit Explorer MCP Server is a MCP server for the Idea phase that queries ProPublica Nonprofit Explorer for IRS Form 990 financial data on 1.8M+ U.S. nonprofits.
What is this MCP server?
- ProPublica Nonprofit Explorer access for IRS Form 990-derived financials
- Coverage described as 1.8M+ U.S. nonprofits in catalog metadata
- stdio and local streamable-http on port 3010 — npm @cyanheads/nonprofit-explorer-mcp-server v0.1.1
- Useful for grant due diligence, donor research, and competitive landscape scans
- MCP_LOG_LEVEL env for debug during agent-driven lookup sessions
- 1.8M+ nonprofits referenced in server description
- Server version 0.1.1
- npm package @cyanheads/nonprofit-explorer-mcp-server
Community signal: 2 GitHub stars.
What problem does it solve?
Validating nonprofit-market ideas means digging through 990s and financial summaries manually instead of delegating structured lookups to your agent.
Who is it for?
Founders researching grant platforms, donor tools, civic tech, or partnerships where public 990 financials inform positioning.
Skip if: Builders who need real-time CRM data, private foundation DAF flows, or certified legal nonprofit status determination.
What do I get? / Deliverables
Your agent can pull nonprofit financial profiles and search results so you can compare organizations and scope civic or grant-tech products with real data.
- Nonprofit search hits with identifiers suitable for deeper 990 pulls
- Summarized financial fields from Explorer records for cited research notes
- Comparative lists of organizations in a cause area or geography
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Journey fit
IRS 990 exploration supports opportunity and partner research before you commit to building a nonprofit-adjacent product. Searching and comparing nonprofit revenue, assets, and filings is classic Idea-phase desk research backed by public data.
How it compares
Read-only ProPublica research MCP, not an accounting system or IRS e-file integration.
Common Questions / FAQ
Who is Nonprofit Explorer MCP Server for?
Indie builders and analysts exploring U.S. nonprofit sectors who want ProPublica 990 data accessible from Claude Code, Cursor, or Codex via MCP.
When should I use Nonprofit Explorer MCP Server?
Use it early in the journey when researching competitors, partners, or TAM for nonprofit, grant, or philanthropy-related product ideas.
How do I add Nonprofit Explorer MCP Server to my agent?
Add @cyanheads/nonprofit-explorer-mcp-server from npm, start stdio with Bun, or expose the streamable-http server on localhost:3010 in your MCP config.