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design-harness

v0.10.0

Step one of vibe coding — turn scattered reading and half-formed ideas into a design you can defend. Three markdown layers (sources → ideas → output) synced on the human's command on a visual canvas; the human adjudicates, the agent runs errands.

CodexClaude Code1 Skill

By tigerless.aiLicense: MIT230 GitHub starsUpdated last month

Directory evidence

Runtimes
Codex and Claude Code
Parsed components
1 skill or MCP entry
Source updated
Sep 1, 2026
Manifest status
Canonical path parsed

The directory validates manifest shape and source location. It does not execute the plugin or provide a security endorsement. Review the indexing methodology →

Install design-harness for Codex and Claude Code

Installs for the current user
codex plugin marketplace add tigerless-labs/design-harness
codex plugin marketplace upgrade design-harness
codex plugin add design-harness@design-harness

Paste and run these commands in a terminal with Codex. They add and refresh the design-harness catalog, then install this plugin.

Compatibility: the page URL and API slug “design-harness” remain stable.

  • Codex: design-harness@agent-plugin-marketplace → design-harness@design-harness

The installer fetches third-party code from the source repository shown on this page. This directory validates manifest structure and source location, but does not perform a security audit; review the manifest, components, and source before installing.

Get the source manually
git clone https://github.com/tigerless-labs/design-harness

Clone the source repository, then follow its setup instructions to add the plugin to a compatible client. The plugin root is plugins/design-harness/.

Plugin files

plugins/design-harness/
├── .codex-plugin/plugin.json
├── .claude-plugin/plugin.json
└── skills/design-harness/SKILL.md

Included Skills1

design-harnessskills/design-harness/SKILL.md

A decision board for evidence-based calls — the human adjudicates, the agent runs the errands. Three layers (sources → ideas → output) in plain markdown, synced on the human's command, projected onto a visual canvas. Use for vendor/tool selection, literature reviews, due diligence, competitive analysis, or any contested call that must stand on traceable evidence — triggers like "file these papers", "put this on the board", "assemble the design", "how do we decide this".

Plugin manifests2

plugins/design-harness/.codex-plugin/plugin.json
{
  "name": "design-harness",
  "version": "0.10.0",
  "description": "Step one of vibe coding — turn scattered reading and half-formed ideas into a design you can defend. Three markdown layers (sources → ideas → output) synced on the human's command on a visual canvas; the human adjudicates, the agent runs errands.",
  "author": {
    "name": "tigerless.ai",
    "email": "[email protected]"
  },
  "homepage": "https://github.com/tigerless-labs/design-harness",
  "repository": "https://github.com/tigerless-labs/design-harness",
  "license": "MIT",
  "keywords": [
    "research",
    "decision",
    "evidence",
    "canvas",
    "markdown"
  ],
  "skills": "./skills/",
  "interface": {
    "displayName": "Design Harness",
    "shortDescription": "A decision board for evidence-based calls — the human adjudicates, the agent runs errands.",
    "developerName": "tigerless.ai",
    "category": "Productivity",
    "websiteURL": "https://github.com/tigerless-labs/design-harness",
    "defaultPrompt": [
      "file these papers onto the board"
    ],
    "brandColor": "#B8551F"
  }
}
plugins/design-harness/.claude-plugin/plugin.json
{
  "name": "design-harness",
  "description": "Step one of vibe coding — turn scattered reading and half-formed ideas into a design you can defend. Three markdown layers (sources → ideas → output) synced on the human's command on a visual canvas; the human adjudicates, the agent runs errands.",
  "version": "0.10.0",
  "author": {
    "name": "tigerless.ai",
    "email": "[email protected]"
  },
  "homepage": "https://github.com/tigerless-labs/design-harness",
  "license": "MIT"
}

For maintainers

If you maintain this plugin, link to this source-backed listing from your README so users can review its manifest and indexed components.

[design-harness on Agent Plugins Marketplace](https://pluginsmp.com/plugins/design-harness)