MCP server for nonprofit financials via ProPublica — IRS Form 990 data for 1.8M+ nonprofits. Connect the official Nonprofit Explorer MCP Server MCP server to Claude, ChatGPT, or Cursor through gate — one gateway URL, no config files, security-checked.
Free to start · No credit card · No hosting needed
Pick your client. Copy, paste, done — or let gate handle sign-ins and policies for you.
claude mcp add --transport http nonprofit-explorer-mcp-server https://nonprofit-explorer.caseyjhand.com/mcpRun in your terminal, then restart Claude Code.
Nonprofit Explorer MCP Server · https://nonprofit-explorer.caseyjhand.com/mcp
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “nonprofit_search”: Search 1.8M+ IRS-recognized tax-exempt organizations by name, keyword, city, or phrase. Optionally narrow by US state, NTEE major sector (1–.”
“Use “nonprofit_get_organization”: Full profile for a single tax-exempt org by EIN: legal name, address, NTEE classification, 501(c) type, IRS ruling date, and a financial sna.”
“Use “nonprofit_get_filings”: All Form 990 filings for a tax-exempt org by EIN: year-by-year revenue, expenses, assets, liabilities, net assets, revenue breakdown, execut.”
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how Nonprofit Explorer MCP Server holds up.
gate scanned 3 tools on Sep 23, 2026 for prompt injection and risky tool definitions — nothing to flag.
Operated by Nonprofit Explorer MCP Server (caseyjhand.com) at its documented MCP endpoint — not a third-party mirror or community re-host.
This server only exposes public data — no account and no credentials are involved when you connect.
gate checks every tool for prompt injection, hidden instructions, data-exfiltration hints, and over-broad permissions before the server is available through your gateway.
If Nonprofit Explorer MCP Server adds or changes tools later, gate re-scans and alerts you — before your AI acts on the change.
Add one gateway URL to Claude, ChatGPT, or any MCP client. One-time setup, about two minutes.
Choose Nonprofit Explorer MCP Server in the gate directory. No sign-in needed.
Nonprofit Explorer MCP Server's tools are live in every AI client you've connected — with rules and logging built in.
Free to start · No credit card · No hosting needed
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
nonprofit_search — Search 1.8M+ IRS-recognized tax-exempt organizations by name, keyword, city, or phrase. Optionally narrow by US state, NTEE major sector (1–
nonprofit_get_organization — Full profile for a single tax-exempt org by EIN: legal name, address, NTEE classification, 501(c) type, IRS ruling date, and a financial sna
nonprofit_get_filings — All Form 990 filings for a tax-exempt org by EIN: year-by-year revenue, expenses, assets, liabilities, net assets, revenue breakdown, execut
https://nonprofit-explorer.caseyjhand.com/mcpYes — Nonprofit Explorer MCP Server operates its own remote MCP server at nonprofit-explorer.caseyjhand.com. gate connects you to that official endpoint and adds security scanning, per-tool access rules, and an activity log on top.
Add gate's gateway URL to your AI client once, then pick Nonprofit Explorer MCP Server in the directory. No account or sign-in is needed. From then on, Nonprofit Explorer MCP Server's tools are available in every client you've connected to gate.
No. Nonprofit Explorer MCP Server runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
It's the vendor's official endpoint, and gate scans its tools for prompt injection and hidden instructions before it goes live, re-checks it whenever it changes, and lets you allow, block, or require approval for every single tool.
Yes — you can get started with gate for free and connect Nonprofit Explorer MCP Server in minutes. No credit card required.
Every server below works through the same gateway URL — connect once, add tools anytime.
Set up Nonprofit Explorer MCP Server in: Claude · Claude Code · ChatGPT · Cursor · VS Code
One URL. All MCPs. Full control. Free to start.
Get started free