io.github.cyanheads/federal-regulations-mcp-server
federal-regulations-mcp-server
Search and trace US federal rules across the Federal Register, eCFR, and Regulations.gov.
alive probed 2026-10-09 · HTTP 200
7tools
9.8ktokens in Claude Opus 5.5
9.9ktokens in Claude Code
4.9 %of a 200k context window
6.1ko200k_base estimate
350 msto initialize
87 msto list tools
- Endpoint
- https://federal-regulations.caseyjhand.com/mcp (streamable-http)
- Host
- federal-regulations.caseyjhand.com
- Protocol
- 2025-11-25
- Reports itself as
- federal-regulations-mcp-server 0.5.3
- Capabilities
- logging, prompts, resources, tools
- Instructions
- 733 characters
- Claude count
- Claude Opus 5.5, measured 2026-10-05. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/cyanheads/federal-regulations-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 |
|---|---|---|
| regulations_search_rules | 1 455 | 24 % |
| regulations_find_comments | 1 130 | 19 % |
| regulations_get_cfr_section | 1 061 | 17 % |
| regulations_browse_cfr | 853 | 14 % |
| regulations_list_open_comments | 585 | 10 % |
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 | 520 ms | 7 | 9.8k | 6.1k |
| 2026-10-05 14:39 | alive | 350 ms | 7 | 9.8k | 6.1k |
| 2026-10-05 00:33 | alive | 237 ms | 7 | 6.1k | |
| 2026-10-04 10:04 | alive | 344 ms | 7 | 6.1k | |
| 2026-10-04 07:57 | alive | 288 ms | 7 | 6.1k | |
| 2026-10-03 20:37 | alive | 805 ms | 7 | 6.1k | |
| 2026-10-03 17:53 | alive | 546 ms | 7 | 6.1k |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.cyanheads/federal-regulations-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.