# Cairn.ink Memory (MCP server)

> Cairn.ink Memory is an MCP server that adds database tools to AI assistants such as Claude Code, Cursor and VS Code. Cross-session memory for AI agents with a Source Receipt for every memory, over MCP. It has 31 GitHub stars, is released under the Apache-2.0 license and runs as a remote server at https://cairn.ink/api/mcp.

Keep important context between AI sessions. Change it when things change. See an example · Where to start · Local setup · Hosted setup · Limitations · Privacy

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/Cairn-ink/cairn-memory |
| GitHub stars | 31 |
| License | Apache-2.0 |
| Language | JavaScript |
| Transport | streamable-http |
| Packages | none (remote only) |
| Remote URL | https://cairn.ink/api/mcp |
| Needs API key | yes |
| Official | yes |
| Works with | Claude Code, Cursor, VS Code, Claude.ai, ChatGPT |
| Category | Databases |
| Latest release | none |
| Last commit | Oct 25, 2026 |
| MCP registry name | ink.cairn/memory |

## Install

### Claude Desktop

```
Settings > Connectors > Add custom connector
URL: https://cairn.ink/api/mcp
```

Remote servers are added as a custom connector, not in claude_desktop_config.json.

### Claude Code

```sh
claude mcp add --transport http cairn-ink-memory "https://cairn.ink/api/mcp"
```

### Cursor (.cursor/mcp.json)

```json
{
  "mcpServers": {
    "cairn-ink-memory": {
      "url": "https://cairn.ink/api/mcp"
    }
  }
}
```

### VS Code (.vscode/mcp.json)

```json
{
  "servers": {
    "cairn-ink-memory": {
      "type": "http",
      "url": "https://cairn.ink/api/mcp"
    }
  }
}
```

Config formats checked against the official docs on 2026-10-07.

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