Claude Code mod
m3l-prompt-optimizer
A Claude Code plugin that refines the prompts you type using Anthropic's prompt-engineering guidance, and passes clear prompts through unchanged
Install
git clone https://github.com/monte3l/m3l-prompt-optimizer.git
claude --plugin-dir ./m3l-prompt-optimizer/.The repo has no marketplace file, so load the plugin folder directly with --plugin-dir.
What it can access
- Reach
- L3Network: network, draws
- Sees
- every prompt
- Hooks
prompt.submit
From a static scan of the mod's code by awesome-claude-code-mods. It shows what the code asks for, not a security review.
How Claude Code mods work
- A mod is a plugin with a JavaScript or TypeScript module that runs inside Claude Code (version 2.1.287 or later). It can draw panes beside the transcript, a band above the prompt, buttons and toasts, restyle the spinner and tool rows, and watch or rewrite tool calls and prompts.
- It installs like any plugin: add its marketplace with /plugin marketplace add owner/repo, then /plugin install name@marketplace.
- Check what a mod can reach before installing: it runs with your permissions. Reach goes from drawing only, to reading files, to writing files or running processes, to the network. Run claude plugin validate on a clone to list its hooks and calls without running it.
- Turn one off from the Installed tab in /plugin, or start Claude Code with --safe-mode to skip every customization for a session.
Details
- Repository
- monte3l/m3l-prompt-optimizer
- Folder
.- Author
- Enrico Lionello
- Type
- Workflow mods
- Website
- prompt-optimizer.monte3l.com
- License
- MIT
- Last updated
- 31 October 2026
- Listed in
- awesome-claude-code-mods
FAQ
What is m3l-prompt-optimizer?
A Claude Code plugin that refines the prompts you type using Anthropic's prompt-engineering guidance, and passes clear prompts through unchanged It is a mod for Claude Code, from monte3l/m3l-prompt-optimizer on GitHub.
What can the m3l-prompt-optimizer mod access?
Its widest reach is "network" (network, draws). It sees every prompt. Like any mod, it runs with your permissions.
How do I install m3l-prompt-optimizer?
Clone monte3l/m3l-prompt-optimizer and start Claude Code with --plugin-dir pointing at the mod's folder (.).
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