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ProPublica Nonprofit MCP — ProPublica Nonprofit Explorer API (free, no auth)
Streamable HTTP
https://gateway.pipeworx.io/propublica-nonprofit/mcpclaude mcp add --transport http propublica-nonprofit https://gateway.pipeworx.io/propublica-nonprofit/mcp@pipeworx/mcp-propublica-nonprofit · npm 0.2.1 · stdio
claude mcp add --transport stdio propublica-nonprofit -- npx -y @pipeworx/mcp-propublica-nonprofit@0.2.1