How do I install the nonprofit mcp server?

Use a recorded configuration for your client, replace example credential values and paths, and verify the documented runtime. Restart or reconnect the client, then inspect the available tools.

What credentials does it need?

It reads `MCP_TRANSPORT_TYPE`, `MCP_LOG_LEVEL`, `MCP_HTTP_HOST`, `MCP_HTTP_ENDPOINT_PATH`, `MCP_PUBLIC_URL` from the environment. Store these in your client's env block or a secrets manager — never commit them to a repository — and grant the narrowest scope that still covers your use case.

SSyncDev

Start a project

Nonprofit MCP Server

MCP server for nonprofit financials via ProPublica — IRS Form 990 data for 1.8M+ nonprofits.

Remote serverstreamable-http

What is the Nonprofit MCP Server?

MCP server for nonprofit financials via ProPublica — IRS Form 990 data for 1.8M+ nonprofits.

What it actually does

Declarative tool definitions — single file per tool, framework handles registration and validation
Unified error handling — handlers throw, framework catches, classifies, and formats
Pluggable auth: none, jwt, oauth
Swappable storage backends: in-memory, filesystem, Supabase, Cloudflare KV/R2/D1
Structured logging with optional OpenTelemetry tracing
STDIO and Streamable HTTP transports

Configuration

Bun v1.3.11 or higher (or Node.js v24+). - No API key required — ProPublica Nonprofit Explorer is a keyless public API.

More MCP options

Compare MCP servers by category, or browse hosted MCP servers if you prefer an endpoint over a local process.

Maintainer setup documentation.

Recorded tools

Check the linked publisher documentation and your connected client's tool list. Names and availability can vary with the server version and account permissions.

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

How to install the Nonprofit MCP 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.

Configuration

Bun v1.3.11 or higher (or Node.js v24+). - No API key required — ProPublica Nonprofit Explorer is a keyless public API.

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

Example prompts to try

“Use Nonprofit to nonprofit search.”
“Use Nonprofit to nonprofit get organization.”
“Use Nonprofit to nonprofit get filings.”

Frequently asked questions

MCP server for nonprofit financials via ProPublica — IRS Form 990 data for 1.8M+ nonprofits. Confirm the tools offered by your installed version in the connected client. Tool availability and permissions depend on the server and account configuration.