ZBS Index What actually exists in applied AI, with the source next to it

mcp server

nonprofit-explorer-mcp-server

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

Description as published by the maintainer. Source

  • version 0.1.4
  • active

active — Most recent push to the repository was 2026-07-30.

What this server can do

3 functions, named and described by the server itself. Parameter names are shown because they say more about what a function does than its name usually does.

nonprofit_get_filings(ein)
All Form 990 filings for a tax-exempt org by EIN: year-by-year revenue, expenses, assets, liabilities, net assets, revenue breakdown, executive compensation, and source PDF links. Use for trend analysis, due diligence, and accessing primary 990 documents. The filing year (tax_prd_yr) is the fiscal year of the return — data lags 1–2 years; always cite the year. An organization that resolves but has filed no 990 returns an empty filings array with a notice, not an error. Also returns filings_pdf_only — older filings with a PDF but no extracted financial data. Data from ProPublica Nonprofit Explorer, sourced from IRS Form 990 filings. Required: ein.
nonprofit_get_organization(ein)
Full profile for a single tax-exempt org by EIN: legal name, address, NTEE classification, 501(c) type, IRS ruling date, and a financial snapshot from the most recent Form 990 filing (revenue, expenses, assets, net assets, and the source PDF link). Also returns the IRS Business Master File standing — whether contributions are deductible, exemption status, and public-charity vs. private-foundation classification. Use nonprofit_search first if you only have an org name — this tool requires an EIN. Data lags 1–2 years; the tax year is shown prominently. Data from ProPublica Nonprofit Explorer, sourced from IRS Form 990 filings. Required: ein.
nonprofit_search(page, query, state, ntee_category, subsection_code)
Search 1.8M+ IRS-recognized tax-exempt organizations by name, keyword, city, or phrase. Optionally narrow by US state, NTEE major sector (1–10), or 501(c) subsection type. Returns EINs — pass them to nonprofit_get_organization or nonprofit_get_filings for details. Results are paginated at 25 per page; use the page parameter and num_pages to paginate. Total results cap at 10,000 in the API; if total_results === 10000 the actual count may be higher. A zero-match query and a page past the last one both return an empty organizations array with a notice rather than an error; only a page whose offset reaches that 10,000 cap is refused. Supports quoted phrases ("Red Cross"), required terms (+evanston), excluded terms (-dental). Data from ProPublica Nonprofit Explorer, sourced from IRS Form 990 filings. Required: query.

Last successful function declaration observed on . Source: https://nonprofit-explorer.caseyjhand.com/mcp. We list what the server declared; we do not call any of these functions.

Endpoint status observed on . Source: https://nonprofit-explorer.caseyjhand.com/mcp.

Signals

These are separate measurements of different things. They are deliberately not combined into one score, because a popularity number that mixes website traffic with saves and stars cannot be checked or acted on.

Signal Value What it measures Window Observed Source
GitHub stars 2 Number of GitHub accounts that bookmarked this repository since it was created. It is a bookmark count, not installs, not active users and not quality. cumulative, all time GitHub
Last commit 2026-07-30 Date of the most recent push to any branch. This is the strongest cheap indicator of whether the project is still maintained. point in time GitHub
Open issues 3 Open issues plus open pull requests, as GitHub counts them together. A high number can mean an active project or an abandoned one. as of fetch GitHub
Latest published version 0.1.4 Latest version string the maintainer published to the registry. as of fetch Model Context Protocol
Registry record last updated 2026-06-20 When the registry record was last updated by its maintainer. point in time Model Context Protocol
License Apache-2.0 Licence GitHub detected in the repository. Detection can be wrong; the LICENSE file is authoritative. as of fetch GitHub
First listed in the MCP Registry 2026-06-20 Date this server was first published to the official MCP Registry. Not a usage or quality measure. point in time Model Context Protocol
repository status active The repository exists on GitHub and is not archived. This says nothing about how recently it was worked on. as of fetch GitHub
mcp tools declared 3 tools Number of functions the server itself declared when asked to list them. This is what the server offers an agent, not a measure of how well any of them work. as of probe nonprofit-explorer.caseyjhand.com
mcp endpoint status ok The server listed 3 functions when asked. as of probe nonprofit-explorer.caseyjhand.com

Where to get it

Related, by what their authors tagged them

  • com.giveradar/charity-registry — last commit 2026-06-15, shares nonprofit
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  • io.github.alex-odoo/myfinance-mcp — last commit 2026-07-22, shares bun
    Personal finance by conversation: expenses, receipts, statement import, budgets, net worth.
  • io.github.alexcloudstar/makers-page-mcp — last commit 2026-08-03, shares bun
    Marketing Assistant MCP: draft, approve, and publish posts to X from your coding agent.
  • webfetch — last commit 2026-07-10, shares bun
    License-first federated image search with attribution, dimensions, and download tooling.
  • Proton Drive CLI MCP — last commit 2026-06-12, shares bun
    Manage Proton Drive from MCP clients through Proton's official CLI without exposing credentials.
  • io.github.coo-quack/calc-mcp — last commit 2026-08-05, shares bun
    21 MCP tools for math, randomness, dates, encoding, hashing, and more — deterministic and accurate.
  • io.github.cyanheads/attack-surface-mcp-server — last commit 2026-07-30, shares bun
    Passive external attack-surface mapping: CT subdomains, DNS, TLS, HTTP posture, RDAP/WHOIS, Shodan.

These share tags the maintainers applied themselves, such as nonprofit, bun. Common tags like "mcp" or "ai" are ignored for this: agreeing with six hundred other projects is not a similarity.

This is not a recommendation and not a test result. It is a map of what the authors said their work is about.

Also from cyanheads

How the author describes it

Topics the maintainer set on GitHub: ai-agents, bun, irs-990, mcp, mcp-server, model-context-protocol, nonprofit, philanthropy, propublica, typescript.

This record as data

Every field on this page, with its source and observation date, is in the catalog JSON. Fetch the whole kind at once instead of parsing this HTML.

GET /api/v1/entries/mcp_server.json

Sources

  1. cyanheads/nonprofit-explorer-mcp-server on GitHub — GitHub, observed , trust tier 3.
  2. Tools declared by the MCP server at https://nonprofit-explorer.caseyjhand.com/mcp — nonprofit-explorer.caseyjhand.com, observed , trust tier 4.
  3. Official MCP Registry — Model Context Protocol, observed , trust tier 1.