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IRS 990 Nonprofit Data

by olyport.com · remote · no sign-in to list tools · v1.1.0 · published by com.olyport

Nonprofit lookup and IRS 990 filing data: revenue, assets, and compensation via ProPublica

Read only
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3 tools: 3 only read.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http irs-990 https://mcp.olyport.com/irs-990/mcp

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

3 tools

Only reads 3Claude Code: allow
  • get_nonprofit_detailsGet detailed information about a nonprofit organization by EIN.No findings

    Why it is in this group

    • The name "get_nonprofit_details" says "get": a word for reading.
    Description, as the server wrote it
    Get detailed information about a nonprofit organization by EIN. Returns comprehensive data from the organization's IRS 990 filings including revenue, expenses, assets, executive compensation, and filing history. Use search_nonprofits first to find the EIN. Args: ein: Employer Identification Number (e.g. '13-1837418' or '131837418').
  • get_nonprofit_filingsGet the filing history for a nonprofit organization.No findings

    Why it is in this group

    • The name "get_nonprofit_filings" says "get": a word for reading.
    Description, as the server wrote it
    Get the filing history for a nonprofit organization. Returns a list of all available IRS 990 filings for the organization, including both filings with parsed data and those without. Useful for tracking financial trends over time. Args: ein: Employer Identification Number (e.g. '13-1837418' or '131837418').
  • search_nonprofitsSearch for nonprofit organizations by name or keyword.No findings

    Why it is in this group

    • The name "search_nonprofits" says "search": a word for reading.
    Description, as the server wrote it
    Search for nonprofit organizations by name or keyword. Searches the ProPublica Nonprofit Explorer database of IRS 990 filers. Returns organization name, EIN, location, revenue, and tax status. Args: query: Search keywords (e.g. 'food bank', 'habitat for humanity'). state: Two-letter state abbreviation to filter by (e.g. 'CA', 'TX'). ntee_code: NTEE major category code (1-10). 1=Arts, 2=Education, 3=Environment, 4=Health, 5=Human Services, 6=International, 7=Public Benefit, 8=Religion, 9=Mutual Benefit, 10=Unknown. c_code: IRS subsection code (e.g. 3 for 501(c)(3), 4 for 501(c)(4)). page: Zero-indexed page number (25 results per page).

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.1.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http irs-990 https://mcp.olyport.com/irs-990/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__irs-990__search_nonprofits",
      "mcp__irs-990__get_nonprofit_details",
      "mcp__irs-990__get_nonprofit_filings"
    ],
    "ask": [],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as irs-990. Review it before you use it.