Nonprofit Explorer MCP Server: Install & Setup

Install Nonprofit Explorer in Claude Code

Remote URL

Claude Code

claude mcp add --transport http nonprofit-explorer https://nonprofit-explorer.caseyjhand.com/mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "nonprofit-explorer": {
      "url": "https://nonprofit-explorer.caseyjhand.com/mcp"
    }
  }
}

npm

Claude Code

claude mcp add nonprofit-explorer -- npx -y @cyanheads/nonprofit-explorer-mcp-server

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "nonprofit-explorer": {
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/nonprofit-explorer-mcp-server"
      ]
    }
  }
}

Frequently asked questions

What does the Nonprofit Explorer MCP server do?

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

Is the Nonprofit Explorer MCP server free?

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

Does Nonprofit Explorer run locally or remotely?

Local + Remote. Can run locally or be used as a hosted remote server.

How do I add Nonprofit Explorer to Claude Code?

Run: claude mcp add --transport http nonprofit-explorer https://nonprofit-explorer.caseyjhand.com/mcp

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