codexspec-market

A requirements-first software development toolkit for Claude Code, an AI coding assistant. It provides commands for recording requirements, writing specifications, planning work, breaking it into tasks, reviewing code, and managing configuration.

In plain words
What is it for?
Use it to clarify requirements, generate specifications and plans, create implementation tasks, review work, and manage project settings.
Why use it?
It gives a project a structured path from an idea to implementation, so important decisions are not left only in chat or scattered across files.

Plugin for Claude Code

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Claude Code
/plugin marketplace add Zts0hg/codexspec
agentmods
npx agentmods add plugins/zts0hg/codexspec/marketplace
Clone the repo
git clone --depth 1 https://github.com/Zts0hg/codexspec

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

codexspec-market scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude-plugin/marketplace.json · 31 lines

What it actually says

{
  "$schema": "https://anthropic.com/claude-code/marketplace.schema.json",
  "name": "codexspec-market",
  "description": "Requirements-First SDD toolkit for Claude Code - structured slash commands for AI-assisted software development",
  "owner": {
    "name": "Zts0hg"
  },
  "plugins": [
    {
      "name": "codexspec",
      "description": "Complete Requirements-First SDD toolkit with constitution, requirements, specification, planning, and implementation commands. Includes a full suite of slash commands for requirements clarification and confirmation, spec generation, technical planning, task breakdown, code review, configuration management, and more.",
      "source": {
        "source": "github",
        "repo": "Zts0hg/codexspec",
        "ref": "v0.7.13",
        "path": ".claude/commands/codexspec"
      },
      "version": "0.7.13",
      "author": {
        "name": "Zts0hg"
      },
      "homepage": "https://github.com/Zts0hg/codexspec",
      "repository": "https://github.com/Zts0hg/codexspec",
      "license": "MIT",
      "category": "development",
      "keywords": ["requirements-first", "spec-driven", "development", "ai", "claude", "sdd", "specification", "planning", "tdd"],
      "strict": false
    }
  ]
}
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 31 lines scan A 66d6ce90ce16

Subscribe to this mod's changes

codexspec-market is a plugin published in the GitHub repository Zts0hg/codexspec (5 stars, last pushed 3d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.