io.github.cyanheads/nonprofit-explorer-mcp-server
nonprofit-explorer-mcp-server
MCP server for nonprofit financials via ProPublica: IRS Form 990 data for 1.8M+ nonprofits.
alive probed 2026-10-09 · HTTP 200
3tools
2.2ktokens in Claude Opus 5.5
2.3ktokens in Claude Code
1.1 %of a 200k context window
1.4ko200k_base estimate
314 msto initialize
76 msto list tools
- Endpoint
- https://nonprofit-explorer.caseyjhand.com/mcp (streamable-http)
- Host
- nonprofit-explorer.caseyjhand.com
- Protocol
- 2025-11-25
- Reports itself as
- nonprofit-explorer-mcp-server 0.1.10
- Capabilities
- logging, prompts, resources, tools
- Instructions
- 455 characters
- Claude count
- Claude Opus 5.5, measured 2026-10-05. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/cyanheads/nonprofit-explorer-mcp-server
- Registry
- active, updated 2026-10-09 · registry entry
- Reachable
- 7 of the last 7 probes
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| nonprofit_search | 728 | 53 % |
| nonprofit_get_organization | 325 | 24 % |
| nonprofit_get_filings | 312 | 23 % |
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-10-09 11:18 | alive | 468 ms | 3 | 2.2k | 1.4k |
| 2026-10-05 14:39 | alive | 314 ms | 3 | 2.2k | 1.4k |
| 2026-10-05 00:33 | alive | 170 ms | 3 | 1.4k | |
| 2026-10-04 10:04 | alive | 302 ms | 3 | 1.4k | |
| 2026-10-04 07:57 | alive | 385 ms | 3 | 1.4k | |
| 2026-10-03 20:37 | alive | 889 ms | 3 | 1.4k | |
| 2026-10-03 17:53 | alive | 354 ms | 3 | 1.4k |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.cyanheads/nonprofit-explorer-mcp-server)
An entry for every probe that changed the result, the tool count or the token cost: Atom feed. Add it to a feed reader or a Slack RSS app to hear when the server stops answering or its tool set grows.