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ProPublica Nonprofits (IRS 990)

Free

ProPublica Nonprofit Explorer — IRS tax-exempt organizations and their Form 990 filings. Search the IRS Business Master File of 501(c) exempt organizations by keyword (and narrow by state, NTEE major group, or 501(c) subsection), then pull any org's filed Form 990 financials (revenue, assets, com...

No key required. Included on Free.

What you can ask

  • “What does ProPublica Nonprofits (IRS 990) have for the area or asset I'm working on?”
  • “Pull the most recent ProPublica Nonprofits (IRS 990) records and put them in a table.”
  • “What does ProPublica Nonprofits (IRS 990) cover, and how fresh is the data?”

Connect to your AI assistant

Paste this URL into Claude, ChatGPT, or any MCP client, then sign in when prompted. ProPublica Nonprofits (IRS 990) is ready as soon as you sign in.

https://patchops.ai/api/mcp

Claude: use Add to Claude, or Settings > Connectors > Add custom connector and paste the URL.

Claude Code

claude mcp add --transport http patchops https://patchops.ai/api/mcp

Step by step

  1. 1

    Open connectors

    In Claude, open Settings > Connectors and click "Add custom connector".

  2. 2

    Paste the URL

    Name it PatchOps and paste https://patchops.ai/api/mcp as the server URL, then click Add.

  3. 3

    Sign in

    Click Connect and sign in to PatchOps when Claude asks.

  4. 4

    Start using

    Ask Claude a question. It uses ProPublica Nonprofits (IRS 990) through PatchOps when it needs to.

› Technical details

ProPublica Nonprofit Explorer — IRS tax-exempt organizations and their Form 990 filings. Search the IRS Business Master File of 501(c) exempt organizations by keyword (and narrow by state, NTEE major group, or 501(c) subsection), then pull any org's filed Form 990 financials (revenue, assets, com...

View the data contract and method schemas →