MCP server

Cairn.ink Memory Official

ink.cairn/memory

Checked 26 Oct 2026, 08:29 UTC · It answered and asked for a sign-in

Cross-session memory for AI agents with a Source Receipt for every memory, over MCP.

Signs in with your accountVerified publisher: cairn.ink

https://cairn.ink/api/mcp

At a glance

Type: MCP server
Publisher: cairn.ink (verified by the MCP Registry)
Status: Signs in with your account
Sets up in: Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok
Last checked: 26 Oct 2026, 08:29 UTC

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

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

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.memory]
url = "https://cairn.ink/api/mcp"

Gemini CLI

{"mcpServers":{"memory":{"httpUrl":"https://cairn.ink/api/mcp"}}}

Cursor

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

VS Code

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

Antigravity

agy mcp add memory https://cairn.ink/api/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"memory","server_url":"https://cairn.ink/api/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"memory","server_url":"https://cairn.ink/api/mcp"}

Signs in with your account: your agent app opens a sign-in page the first time you use it.

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