# cairn

> cairn — isaacriehm-cairn. Use this tool when you need to maintain a persistent and accurate representation of your codebase, preventing AI agents from introducing errors or inconsistencies. It solves the problem of AI drift by providing a reliable ground truth for Claude Code, ensuring that changes are tracked and verified through git integration. This tool is ideal for developers who want to ensure the integrity and reliability of their codebase over time.

Canonical page: https://skillsregistry.net/skills/isaacriehm-cairn  
JSON: https://api.skillsregistry.net/v1/skills/isaacriehm-cairn

## Description

Persistent ground truth for Claude Code. Stop AI agents from drifting on your codebase.

## Trust

- **Trust score (0–1):** 0.92
- **Verification tier:** verified
- **Last scanned:** 2026-09-28

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** container
- **Runtime environment:** vm
- **Category:** ai-ml
- **Updated:** 2026-09-28

## Source

- **Source listing:** [GitHub](https://github.com/isaacriehm/cairn)

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "isaacriehm-cairn"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/isaacriehm-cairn` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/isaacriehm-cairn/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt