Claude Code mod

design-duel

A design contest in one command: /design-duel <topic> has claude, codex and agy each propose a design alone (read-only), then score each other's proposals under anonymous labels with their strongest objection; the mod tallies the scores, the band names the winner, and the winning design goes into the prompt for Claude to build when asked

1 starsPane & dashboard mods Plugin marketplaceValidates on Claude Code 2.1.319 Source

Install

Inside Claude Code
/plugin marketplace add simota/claude-mods
/plugin install design-duel@simota-mods

Mods install like plugins. Run /reload-plugins or start a new session to load it.

What it can access

Reach
L2Writes or runs: runs processes, writes the prompt box, reads mod state, draws
Draws in
AbovePromptPane
Hooks
session.startcommand.runui.render

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.
Claude Code docs

Details

Repository
simota/claude-mods
Folder
mods/design-duel
Marketplace
simota-mods
Author
simota
Type
Pane & dashboard mods
License
MIT
Last updated
8 November 2026
Listed in
awesome-claude-code-mods

FAQ

What is design-duel?

A design contest in one command: /design-duel <topic> has claude, codex and agy each propose a design alone (read-only), then score each other's proposals under anonymous labels with their strongest objection; the mod tallies the scores, the band names the winner, and the winning design goes into the prompt for Claude to build when asked It is a mod for Claude Code, from simota/claude-mods on GitHub.

What can the design-duel mod access?

Its widest reach is "writes or runs" (runs processes, writes the prompt box, reads mod state, draws). It draws in AbovePrompt, Pane. Like any mod, it runs with your permissions.

How do I install design-duel?

Inside Claude Code (v2.1.287 or later), run /plugin marketplace add simota/claude-mods and then /plugin install design-duel@simota-mods.

Is design-duel popular?

simota/claude-mods has 1 GitHub stars and 0 forks, and is included in 1 curated Claude Code list. It was last updated on 8 November 2026.

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