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Northstar Toolkit is the nonprofit data platform: every US nonprofit and foundation from IRS 990 filings, as free search, a developer API, and an MCP server for AI agents. The 990 base layer is free, and stays free.
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Pricing

Start free. Pay only when you build something commercial.

Free

$0/ month

No credit card. Generous limits. Attribution appreciated.

  • Search every US nonprofit and foundation, no account needed
  • Public org pages with financials, salaries, and grants
  • Free MCP server: point Claude at the whole warehouse
  • API key with a generous daily request allowance
  • Full modeled 990 data: filings, compensation, grants
  • Lists and AI matching in the web app
Get a free key
For commercial use

Builder

$49/ month

The data behind your product, at a fraction of what the enterprise directories charge.

  • Everything in Free
  • Commercial use license
  • 10× the daily request quota
  • Batch EIN lookups (up to 100 per call)
  • Larger page sizes
  • Email support
Start building

Beyond

Talk to us

Evaluated case by case. We deliberately don't sell bulk warehouse dumps.

  • Higher request volumes
  • Custom integrations and datasets
  • Partnership and licensing conversations
Contact us

The keyless MCP server works without any account. A free key simply lifts the limits. Free-tier API use is for non-commercial projects; we ask for (but don't enforce) attribution.

Questions about limits, licensing, or the data itself? Contact us or check the FAQ.