MCP server for nonprofit financials via ProPublica — IRS Form 990 data for 1.8M+ nonprofits.
MCP server for nonprofit financials via ProPublica — IRS Form 990 data for 1.8M+ nonprofits. Exposed over MCP by the nonprofit mcp server, that capability becomes something an assistant can invoke while it works, not something you go and do afterwards.
Everything the assistant can do here goes through one of these:
nonprofit_search — Search 1.8M+ IRS-recognized tax-exempt organizations by name, keyword, city, or phrase with optional state, NTEE sector, and 501(c) filtersnonprofit_get_organization — Full profile for one org by EIN: legal identity, IRS classification, ruling date, and a financial snapshot from the most recent Form 990nonprofit_get_filings — All Form 990 filings for an org by EIN: year-by-year financials, program-expense ratio, executive compensation, and source PDF/XML linksPrerequisites — The Prerequisites tool exposed by this serverInstallation — The Installation tool exposed by this serverYou will need 5 environment variables: MCP_TRANSPORT_TYPE, MCP_LOG_LEVEL, MCP_HTTP_HOST, MCP_HTTP_ENDPOINT_PATH, MCP_PUBLIC_URL. The server will not start without them, which is usually why the tools fail to appear on a first run. Keep credentials in your client's env block or a secrets manager rather than in a file you might commit.
Being a remote server, there is no local install. You register the endpoint with your client, authorise it once, and the tools appear.
This sits in the file and storage access group, where several servers overlap in what they claim to do but differ sharply once you actually set them up. Nonprofit's toolset — nonprofit_search, nonprofit_get_organization, nonprofit_get_filings and 2 more — is a fair guide to whether it matches your workflow. It is maintained by cyanheads; worth a glance at recent repository activity before you build anything load-bearing on it.
We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.
| Tool | What it does |
|---|---|
| nonprofit_search | Search 1.8M+ IRS-recognized tax-exempt organizations by name, keyword, city, or phrase with optional state, NTEE sector, and 501(c) filters |
| nonprofit_get_organization | Full profile for one org by EIN: legal identity, IRS classification, ruling date, and a financial snapshot from the most recent Form 990 |
| nonprofit_get_filings | All Form 990 filings for an org by EIN: year-by-year financials, program-expense ratio, executive compensation, and source PDF/XML links |
| Prerequisites | The Prerequisites tool exposed by this server. |
| Installation | The Installation tool exposed by this server. |
{
"mcpServers": {
"nonprofit-explorer-mcp-server": {
"type": "streamable-http",
"url": "https://nonprofit-explorer.caseyjhand.com/mcp"
}
}
}Configuration as documented by the project. Restart the client after saving.
| Variable | Description | Required |
|---|---|---|
| MCP_TRANSPORT_TYPE | Configuration value read at startup. | Optional |
| MCP_LOG_LEVEL | Configuration value read at startup. | Optional |
| MCP_HTTP_HOST | Endpoint or connection string the server talks to. | Optional |
| MCP_HTTP_ENDPOINT_PATH | Filesystem location the server is allowed to use. | Optional |
| MCP_PUBLIC_URL | Endpoint or connection string the server talks to. | Yes |
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