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Cairn.ink Memory

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.

github.com/Cairn-ink/cairn-memory (opens in a new tab)

Data as of from the GitHub API and the official MCP registry; description from the project's repository. Report an error

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Install Cairn.ink Memory

Generated from the server's MCP registry entry. Replace your-value with your own values.

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

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

Cursor

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

VS Code

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

Config formats checked against the official docs on Oct 7, 2026: modelcontextprotocol.io (opens in a new tab), code.claude.com (opens in a new tab), cursor.com (opens in a new tab), code.visualstudio.com (opens in a new tab).

About Cairn.ink Memory

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

  • ai-agents
  • claude-code
  • mcp
  • memory
  • provenance
  • cairn-ink
  • agent-memory
  • local-first
  • mcp-server
  • sqlite

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FAQ

Cairn.ink Memory FAQ

Still curious? Email info@appsgit.com.

How do I install the Cairn.ink Memory MCP server?

It is a remote MCP server at https://cairn.ink/api/mcp. Add it with claude mcp add --transport http in Claude Code, as a url entry in .cursor/mcp.json or .vscode/mcp.json, or as a custom connector in the Claude apps.

Is Cairn.ink Memory free?

The server is open source under the Apache-2.0 license, so running it is free. It needs credentials (an API key or token) for the service it connects to, which may require a paid account.

Is Cairn.ink Memory actively maintained?

The most recent commit was on Oct 25, 2026. appsgit only lists MCP servers with a commit in the last six months.