com.cairnsafe/cairn
Cairn
Workplace safety citation counts, penalties and 29 CFR standards data for AI assistants
alive probed 2026-10-15 · HTTP 200
3tools
651tokens in Claude Opus 5.5
675tokens in Claude Code
0.3 %of a 200k context window
395o200k_base estimate
531 msto initialize
438 msto list tools
- Endpoint
- https://cairnsafe.com/mcp (streamable-http)
- Host
- cairnsafe.com
- Protocol
- 2025-11-25
- Reports itself as
- cairn 1.1.0
- Capabilities
- tools
- Instructions
- 638 characters
- Claude count
- Claude Opus 5.5, measured 2026-10-15. Counted again when the tool definitions change. Method.
- Website
- https://cairnsafe.com/developers/mcp
- Registry
- active, updated 2026-10-14 · registry entry
- Reachable
- 1 of the last 1 probe
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| search_standards | 139 | 35 % |
| top_cited_standards | 132 | 33 % |
| get_standard | 124 | 31 % |
Badge and feed
[](https://mcpcost.ulehla.dev/s/com.cairnsafe/cairn)
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.