# Cairn

> Use this tool when you need to retain and recall information over time, and uncover insights from stored data. Cairn solves problems of knowledge loss and discovery by providing a persistent memory for AI agents and humans to store, search, and identify patterns. It takes in diverse data inputs and outputs relevant information and patterns, making it ideal for applications requiring long-term memory and insight generation.

Canonical page: https://skillsregistry.net/skills/io-github-jasondostal-cairn-mcp  
JSON: https://api.skillsregistry.net/v1/skills/io-github-jasondostal-cairn-mcp

## Description

Persistent memory for AI agents and humans. Store, search, and discover patterns.

## Trust

- **Trust score (0–1):** 0.89
- **Verification tier:** verified
- **Last scanned:** 2026-09-19

## Facts

- **Version:** 0.21.2
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** ai-ml
- **Updated:** 2026-09-19

## Source

- **Source listing:** [MCP Registry](https://registry.modelcontextprotocol.io/v0/servers/io.github.jasondostal%2Fcairn-mcp)
- **Repository:** <https://github.com/jasondostal/cairn-mcp>

## 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": "io-github-jasondostal-cairn-mcp"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/io-github-jasondostal-cairn-mcp` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/io-github-jasondostal-cairn-mcp/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