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nax-spec-kit

v0.4.4

Spec authoring + audit workflow for coding agents: spec-writing (brainstorm → SPEC-*.md) and spec-review (ground a spec against the real codebase before implementation).

CodexClaude Code1 Skill

By William KhooLicense: MIT0 GitHub starsUpdated 4 days ago

Directory evidence

Runtimes
Codex and Claude Code
Parsed components
1 skill or MCP entry
Source updated
Sep 20, 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 nax-spec-kit for Codex and Claude Code

Installs for the current user
codex plugin marketplace add IchenDEV/agent-plugin-mkt
codex plugin marketplace upgrade agent-plugin-marketplace
codex plugin add nax-spec-kit@agent-plugin-marketplace

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

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/nathapp-io/nax-spec-kit-skills

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

Plugin files

nax-spec-kit/
├── .codex-plugin/plugin.json
├── .claude-plugin/plugin.json
└── skills/spec-writing/SKILL.md

Included Skills1

spec-writingskills/spec-writing/SKILL.md

Convert brainstorming output into a guide-conformant SPEC-*.md ready for spec-review. Bridges open-ended ideation and structured spec authoring. Invoke when user says "draft the spec", "write SPEC-X.md", "convert this brainstorm into a spec", or `/spec-writing <source>`. Enforces sizing, behavioral (executable) verification anchors, seams, terminal-cleanup isolation. ACs are real runtime test cases — never grep/file-content assertions. Project-agnostic and language-agnostic.

Plugin manifests2

.codex-plugin/plugin.json
{
  "name": "nax-spec-kit",
  "version": "0.4.4",
  "description": "Spec authoring + audit workflow for coding agents: spec-writing (brainstorm → SPEC-*.md) and spec-review (ground a spec against the real codebase before implementation).",
  "author": {
    "name": "William Khoo",
    "email": "[email protected]"
  },
  "license": "MIT",
  "homepage": "https://github.com/nathapp-io/nax-spec-kit-skills",
  "repository": "https://github.com/nathapp-io/nax-spec-kit-skills",
  "keywords": [
    "skills",
    "spec",
    "spec-review",
    "spec-writing",
    "planning",
    "workflow"
  ],
  "skills": "./skills/",
  "interface": {
    "displayName": "nax-spec-kit",
    "shortDescription": "Spec authoring + codebase-grounded spec review for coding agents",
    "longDescription": "Use nax-spec-kit to convert a brainstorm into a guide-conformant SPEC-*.md (spec-writing) and to audit that spec against the actual codebase — catching API hallucination, shape contradictions, convention violations, behavioral drift, sizing breaches, and stale references — before implementation (spec-review).",
    "developerName": "William Khoo",
    "category": "Coding",
    "capabilities": [
      "Interactive",
      "Read",
      "Write"
    ],
    "defaultPrompt": [
      "Draft the spec for this feature.",
      "Review this spec against the codebase."
    ],
    "brandColor": "#2563EB",
    "websiteURL": "https://github.com/nathapp-io/nax-spec-kit-skills"
  }
}
.claude-plugin/plugin.json
{
  "name": "nax-spec-kit",
  "description": "Spec authoring + audit workflow for Claude Code: spec-writing (brainstorm → SPEC-*.md) and spec-review (ground a spec against the real codebase before implementation).",
  "version": "0.4.4",
  "author": {
    "name": "William Khoo",
    "email": "[email protected]"
  },
  "license": "MIT",
  "homepage": "https://github.com/nathapp-io/nax-spec-kit-skills",
  "repository": "https://github.com/nathapp-io/nax-spec-kit-skills",
  "keywords": [
    "skills",
    "spec",
    "spec-review",
    "spec-writing",
    "planning",
    "workflows"
  ]
}

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.

[nax-spec-kit on Agent Plugins Marketplace](https://pluginsmp.com/plugins/nax-spec-kit)