Funders Index

See who funds what in your community.

Nonprofits find their next funder. Funders see where help goes furthest. Service clubs choose their next grant. Every gift across northern Illinois, traced to its public source, answered by Claude in plain words.

Get accessSee how it works
IRS filings read
61,494
Funders
24,474
Towns
102
Gifts with a named source
206,942

Works where you already work

Sign in to get your key, then connect it the way you like.

Claude on the web or desktop

Add this address as a custom connector in claude.ai (Settings, Connectors, Add custom connector):

https://mcp.fundersindex.com/mcp

Claude sends you to a sign-in page. Paste your key there once and the connector stays signed in.

Claude Code

One command adds the server. Replace YOUR_KEY with your key first.

claude mcp add --transport http funders-index https://mcp.fundersindex.com/mcp --header "Authorization: Bearer YOUR_KEY"

Keep the key out of shared files and screenshots. It identifies you.

Claude skill

Teach Claude how to read the index well: download the skill and upload it in claude.ai (Settings, Capabilities, Skills). Claude Code users get it with the plugin.

Anything else (REST)

Send your key as a bearer token to any path under /api/v1:

curl -H "Authorization: Bearer YOUR_KEY" https://mcp.fundersindex.com/api/v1/towns

The OpenAPI description needs no key, and the reference lists every endpoint.

Questions people ask

Ask the way you would ask a colleague. Claude looks it up and shows its sources.

  • Nonprofits

    Find your next funder

    Which foundations fund youth arts programs like ours in Evanston, and how much do they usually give?

  • Funders

    See where help goes furthest

    Who else funds the organizations we support, and where are we the only one?

  • Service clubs

    Choose your next grant

    Which causes in Skokie get the least money for how many organizations work on them?

  • Anyone

    Follow the money

    List gifts over $25,000 in Winnetka in the most recent year, grouped by cause, as a chart.

What it will and will not do

  • It lists organizations only: nonprofits, foundations, companies and public bodies.
  • Gifts from individuals are counted in totals but the people are never named.
  • It does not draft or send outreach. You decide who to contact and how.
  • It reads data and cannot change any of it.

Start exploring in minutes

Sign in with Google and your key is ready right away. Nonprofits, funders and clubs can request early access to every tool.

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