# Cyanheads Federal Regulations MCP server

Source: https://glimind.com/server/mcp-registry%2Fio.github.cyanheads%2Ffederal-regulations-mcp-server
Registry id: `mcp-registry/io.github.cyanheads/federal-regulations-mcp-server`
Status: live (checked 2026-10-27T00:24:36.966Z)

## Verdict

Cyanheads Federal Regulations MCP server answered 99.81% of Glimind's liveness checks over 30 days, better than 24% of MCP servers, with 385 ms median handshake and 19 outages in 90 days. Its agent-readiness grade is A (97/100) across 7 tools, costing an agent about 6,221 tokens to load. Checked every few minutes; no tool is ever called.

## Measurements (30 days)

| Metric | Value | Better than |
|---|---|---|
| Uptime, 30 days | 99.81% | 24% of MCP servers |
| Median handshake latency | 385 ms | 56% of MCP servers |
| p95 handshake latency | 2317 ms | — |
| Checks in 30 days | 4,937 | — |
| Outages, 90 days | 19 | — |
| Median recovery | 3 min | — |
| Agent-readiness score | 97/100 (A) | 91% of MCP servers |
| Tools | 7 | — |
| Tool-list size for an agent | ~6,221 tokens | 36% of MCP servers |
| Days observed | 29 | — |

## Install

```json
{
  "mcpServers": {
    "cyanheads-federal-regulations-mcp-server": {
      "type": "http",
      "url": "https://federal-regulations.caseyjhand.com/mcp"
    }
  }
}
```

Claude Code:

```sh
claude mcp add --transport http cyanheads-federal-regulations-mcp-server https://federal-regulations.caseyjhand.com/mcp
```

## Tools (7)

- `regulations_browse_cfr`: Explore the codified Code of Federal Regulations via eCFR in two modes. "structure" lists all 50 titles; with a title, that title's top-level divisions (its cha
- `regulations_find_comments`: Fetch public comments on a Federal Register document or a Regulations.gov docket — the unique corpus of what citizens and organizations actually submitted. Prov
- `regulations_get_cfr_section`: Read the codified text at a CFR location via eCFR — current or as of a past date. Answers "what does 40 CFR 50.1 say today?" and "...as of 2019-01-01?". Three l
- `regulations_get_docket`: Pull a rulemaking docket from Regulations.gov by docket ID (e.g. "EPA-HQ-OAR-2025-0194") — the docket's metadata (title, agency, RIN, abstract) and the document
- `regulations_get_document`: Fetch one Federal Register document by its FR document number — full metadata (title, type, agencies, abstract, action, effective/comment dates, RINs) plus the 
- `regulations_list_open_comments`: List Federal Register documents currently open for public comment, sorted by closing date (soonest first) across the whole open window, filterable by document t
- `regulations_search_rules`: Search the Federal Register — the daily journal of US proposed rules, final rules, notices, and presidential documents (1994–present) — filtering by full-text q

Measured by Glimind (https://glimind.com): MCP handshake + tool list only, no tool is ever called. CC BY 4.0.