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xtralab

Agent skills

xtralab includes four Agent Skills. They are in the agent-skill/ folder of the repository.

Skill Use it to Example request
open Start xtralab in a folder from a terminal session and open it in the browser. The agent runs xtralab with uvx, so nothing is installed into the project. “Open xtralab in this worktree.”
stop Stop the xtralab server of a folder, or all of them, or list the running ones. The agent finds servers by folder, so no port is needed. “Stop xtralab for this worktree.”
customize-jupyterlab Change JupyterLab and xtralab settings. The agent edits the correct configuration file. “Hide the status bar by default.”
guided-code-walkthrough Get a tour of code in the running app. The agent opens files, highlights lines, and builds a walkthrough panel with text, code, and diagrams beside the editor. “Walk me through how this module fits together.”

In Claude Code, the skills are also slash commands: /xtralab:open path/to/folder runs uvx xtralab open for that folder and reports its URL. The server runs after the agent session ends. /xtralab:stop path/to/folder stops it.

The guided-code-walkthrough skill uses the MCP server: see Connect agents with MCP.

Install the skills

Section titled “Install the skills”

The skills use the Agent Skills format. They work with Claude Code, Codex CLI, Gemini CLI, GitHub Copilot, and other agents that read this format.

The repository is also a plugin marketplace. The xtralab plugin installs the skills and registers the MCP server:

Terminal window
claude plugin marketplace add jtpio/xtralab
claude plugin install xtralab@xtralab

See agent-skill/README.md for the folders that each agent reads and for other installation methods.