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Claude Code connects through the xysq plugin: it registers the MCP server and bundles the memory skills, so your agent knows how and when to use them. Authentication is OAuth through your browser. Takes about a minute.
1

Install the plugin

Run these two commands in Claude Code:
2

Sign in via /mcp

Open the MCP panel:
You’ll see xysq listed. Select it and approve the OAuth flow. Claude Code opens your browser, signs you in to xysq, and stores the session in your system keychain.You only do this once. Future sessions reuse the stored session automatically.
3

Verify the connection

In Claude Code, ask:
That triggers the first tool call. The in-app guide at app.xysq.ai watches for it and marks the connection verified.

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Prefer the MCP server on its own?

Optional. If you just want the server without the plugin (skills, updates), add it by URL:
Then run /mcp, select xysq, and approve the OAuth flow. Verify with claude mcp list; you should see xysq in the output.

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No browser? Use an API key

Only if you can’t run the OAuth flow (a headless CI runner, a server-to-server automation, a shared workstation). Generate a key in the app’s Claude Code connect guide, then pass it as a bearer header instead of signing in: