chjoel0621

Vibespec — AI skill for Claude Code

AI community

AI product-planning plugin for Claude and Codex.

How to install Vibespec

This entry records only its repository, not the path inside it, so there is no exact command to give. Open chjoel0621/vibespec and copy the folder into ~/.claude/skills/, or the file into ~/.claude/agents/.

What Vibespec does

AI product-planning plugin for Claude and Codex. Generate and validate PRDs, feature specs, IA, user flows, and KPI measurement evidence from one JSON SOT.

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README

VibeSpec

**English · [한국어](README.ko.md)**

Turn a product idea into an implementation-ready planning source of truth with Claude or Codex.

What it creates

Describe an idea or attach a business plan, PRD draft, or meeting notes. VibeSpec creates:

a schema-compliant *.sot.json connecting the PRD, feature specifications, information architecture, user flows, and KPI measurement evidence;
a self-contained HTML viewer generated from the same SOT for reviewing and editing the plan; and
structural, content, and measurement checks that keep unresolved decisions visible.

The JSON is the canonical planning source. The HTML is the viewer and editor that reads it.

Host support

VibeSpec runs as a plugin for Claude Cowork, Claude Code, and OpenAI Codex.

Full mode requires Node.js 18 or later, read access to the installed VibeSpec skill directory, and write access to the task folder. It produces validated JSON and a self-contained HTML viewer and supports safe edits, rebase, maps, and merge. Claude Code and filesystem-enabled Codex tasks normally provide these capabilities.

A Cowork task without Node.js or shell access can use reduced mode after the user accepts that limitation. VibeSpec provides the SOT JSON. If the host can read and copy the installed `assets/viewer.html`, VibeSpec also supplies that unchanged viewer for the user to load the JSON into; without asset access, only the JSON can be provided. Reduced mode cannot claim validated embedded HTML or apply deterministic tree edits.

The `/plugin` slash commands below are for the Claude Code terminal only. They do not work in Cowork or Codex.

Install

Cowork

Install through the desktop UI:

Open Customize in the left sidebar.
Open the Plugins tab. Under Personal plugins, select +, then Add marketplace.
Choose a GitHub repository and enter https://github.com/chjoel0621/vibespec.git.
In the added marketplace, select Install for vibespec.
Use the