Cairn MCP server

Which servers in the official MCP registry are Cairn's own, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-19

← Back to Cairn

Whose server it is

Registry namecom.cairnsafe/cairnverified in the MCP registry

The registry name sits under cairnsafe.com. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-19

Stateanswerschecked 2026-10-19
Tools3
Server calls itselfcairn
Server version1.1.0
Protocol version2025-06-18

On 2026-10-19 the server answered initialize and tools/list without a sign-in. First answer in 399 ms.

Measured dailydaily checks: 2, the first on 2026-10-19

Answeredmeasuring2 of the 7 daily checks it takes to print a share
Median first answer480 ms
Space in an agent's context≈ 393 tokensthe definitions of all its tools (3), which an agent carries on every turn
Tool definitionsB · 89 of 100

Parameters without a description: in 2 of 3

Worth a look

None of the five warning signs in these definitions.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The state of vendors' MCP servers: method and numbers →

Tools it offers3 tools · read 2026-10-19

search_standards
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…
get_standard
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.
top_cited_standards
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.

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

{
  "mcpServers": {
    "cairn": {
      "type": "http",
      "url": "https://cairnsafe.com/mcp"
    }
  }
}

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.