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Cairn

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

Workplace safety citation counts, penalties and 29 CFR standards data for AI assistants

Changes · 1
CompareRegistry entry

3 tools: 1 change things and 2 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 cairn https://cairnsafe.com/mcp

Tools

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

3 tools

Changes things 1Claude Code: ask
  • top_cited_standardsThe 10 most-cited 29 CFR safety standards since 2016, for all standards or one CFR part: 1910 general industry, 1926 construction, 1904 recordkeeping, 1915 shipyards, 1917 marine t…No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    The 10 most-cited 29 CFR safety standards since 2016, for all standards or one CFR part: 1910 general industry, 1926 construction, 1904 recordkeeping, 1915 shipyards, 1917 marine terminals, 1918 longshoring, 1928 agriculture.

    Annotations the server declares

    • title: Most-cited standards
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
Only reads 2Claude Code: allow
  • get_standardHeadline enforcement figures for one 29 CFR section, such as 1910.147 or 1926.501: citations and inspections since 2016, total penalties, the median penalty per violation, its rank…No findings

    Why it is in this group

    • The name "get_standard" says "get": a word for reading.
    Description, as the server wrote it
    Headline enforcement figures for one 29 CFR section, such as 1910.147 or 1926.501: citations and inspections since 2016, total penalties, the median penalty per violation, its rank, and how many interpretation letters cite it, with links.

    Annotations the server declares

    • title: Headline figures for a standard
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • search_standardsFind workplace safety standards (29 CFR sections) by section number or by words in the title, such as "1910.14", "lockout", "fall protection" or "forklift".No findings

    Why it is in this group

    • The name "search_standards" says "search": a word for reading.
    Description, as the server wrote it
    Find workplace safety standards (29 CFR sections) by section number or by words in the title, such as "1910.14", "lockout", "fall protection" or "forklift". Returns up to 10 standards cited at least 50 times since 2016, most cited first, with headline figures and a link.

    Annotations the server declares

    • title: Search safety standards
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false

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 cairn https://cairnsafe.com/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__cairn__search_standards",
      "mcp__cairn__get_standard"
    ],
    "ask": [
      "mcp__cairn__top_cited_standards"
    ],
    "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 cairn. Review it before you use it.