GFM Render

When to choose it

Reading richer Markdown in a supported Claude Code interface.

Choose it if: You want richer Markdown and can meet the drawing surface requirements.

Look elsewhere if: You need this UI in the VS Code panel or a non-interactive session.

What the source describes

• Formats alerts, checklist items and strikethrough
• Renders supported Mermaid diagrams
• Processes assistant messages automatically

Requirements

• Claude Code 2.1.287+
• Supported terminal or Desktop Code UI
• Node is required for Desktop diagrams

Install from the reviewed source

These are the source’s documented installation steps. Read the source, license and requirements first. Marketplace installation can use a different scope from a local --plugin-dir session. Restart Claude Code or use /reload-plugins afterward.

git clone https://github.com/briangtn/claude-gfm-render.git ./claude-gfm-render
claude plugin validate ./claude-gfm-render
claude --plugin-dir ./claude-gfm-render

Use it after installation

Start the plugin-enabled session; matching assistant messages are rendered automatically.

Limitations & considerations

• Current official drawing support is terminal and Desktop; upstream VS Code/mobile claims are not adopted here
• Optional startup shell hook adds Markdown guidance
• Root project is MIT; vendored elkjs is EPL-2.0

Mods execute with your user privileges and are not sandboxed. They can access files, launch processes and make network requests. ClaudeStack has not run or security-audited this Mod. Use claude plugin validate on a downloaded directory to inspect declared behavior; validation does not certify safety. Check the official trust guidance before loading it.

Source & review record

Our description is based on public documentation and manifests available on 2026-10-05, including the hooks-module pointer and registration source. Installation formats were checked against Claude Code’s documentation. No extension code was executed: this is a source review, not a runtime compatibility test or security audit.

• Original source and documentation
• Reviewed registration source
• License of the reviewed source
• Official plugin installation documentation

Repository last pushed at the time of review: 2026-10-03T16:51:30Z. This date does not prove that the individual Mod works with a particular Claude Code release.