prd-executor

prd-executor is a skill for Claude Code, Codex from Sixz-AI/prd-workflow. It costs 79 tokens per session (2,068 once invoked), scanned A, original, MIT.

A workflow for implementing a product requirements document from a prepared breakdown of phases and requirements. TDD, or test-driven development, means writing a failing test first, then implementing the code that makes it pass.

In plain words
What is it for?
Use it when starting development from a breakdown in the docs folder. It helps confirm requirements, select work in dependency order, use TDD, commit each completed requirement, and push completed phases.
Why use it?
It prevents development from starting with unclear requirements and keeps implementation tied to the planned work. Required checkpoints make progress and completed changes easier to verify.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/sixz-ai/prd-workflow/prd_executor
Any agent
npx skills add Sixz-AI/prd-workflow --skill prd_executor
Clone the repo
git clone --depth 1 https://github.com/Sixz-AI/prd-workflow

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for prd-executor

README.md
[![agentmods](https://agentmods.dev/badge/skills/sixz-ai/prd-workflow/prd_executor.svg)](https://agentmods.dev/skills/sixz-ai/prd-workflow/prd_executor)
Your own site
<a href="https://agentmods.dev/skills/sixz-ai/prd-workflow/prd_executor"><img src="https://agentmods.dev/badge/skills/sixz-ai/prd-workflow/prd_executor.svg" alt="Measured on agentmods" height="20"></a>
Per session 79 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,068 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00079 $0.02068
Opus 5 $0.00039 $0.01034
Sonnet 5 $0.00016 $0.00414
Haiku 4.5 $0.00008 $0.00207

Measured 4d ago against content hash a35430c5c434, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

prd-executor 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 4d 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.

prd_executor/SKILL.md · 216 lines

How it starts

The opening of the file, as written. The whole thing — 216 lines — stays where its author put it; the contents beside it link to each section on GitHub.

PRD Executor Skill

Overview

This skill guides a Dev Agent through executing a prd_decomposer breakdown located at docs/[Feature_Name]_breakdown/. It enforces three hard gates:

  1. Requirements confirmation (brainstorming all 10 closure dimensions) before any coding
  2. TDD workflow during implementation
  3. Git commit per completed REQ, push per completed Phase

When to Use

  • A breakdown directory exists at docs/[Feature_Name]_breakdown/
  • User says "start executing", "start development", "implement this PRD", "execute breakdown"
  • Dev Agent is handed a breakdown directory and needs to know how to proceed

Workflow

Step 1: Initialize

Read docs/[Feature_Name]_breakdown/outline.md. Extract:

  • Total Phases and REQs
  • Dependency graph between REQs
  • Current status of each REQ (look at the Status column)

Announce to the user: which REQs are pending, which (if any) are already in progress or done.

Step 2: Select Next Phase

Find the first Phase in outline.md whose status is ⬜ (not started) and whose REQ dependencies (if any cross-Phase) are all ✅ or ⚠️.

If no such Phase exists:

  • If all Phases are ✅: announce completion, done.
  • If a Phase is 💬 or 🔍 or 🚧 or 🧪: resume that Phase from the appropriate stage below.

Stage A: Discussion — Discuss All REQs in the Phase [HARD GATE 1]

  1. Update Phase status in outline.md to 💬 (Discussing)
  2. For each REQ in this Phase, in order: a. Open the REQ file. Check whether 🔍 详细需求确认 still contains ⚠️ [待填充]. b. If YES (placeholder present):
    • Update REQ status in REQ file and outline.md to 💬
    • Invoke superpowers:brainstorming with the REQ content as context
    • Ensure ALL 10 closure dimensions are addressed:
      • API closure
      • Business logic closure
      • UI/UX closure
      • Error handling closure
      • Data consistency closure
      • Permission/security closure
      • Performance boundary closure
      • Testing closure (unit test scenarios + manual UAT checkpoints)
      • Analytics/tracking closure
      • Compatibility closure
    • Replace the entire ⚠️ [待填充] placeholder block with the brainstorming conclusions c. If NO (placeholder already replaced): skip brainstorming for this REQ.
  3. YOU ARE FORBIDDEN FROM WRITING ANY IMPLEMENTATION CODE DURING STAGE A

Read the full file on GitHub · 216 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 4d ago First seen · 216 lines · 79 tokens per session scan A a35430c5c434

Subscribe to this mod's changes

prd-executor is a skill published in the GitHub repository Sixz-AI/prd-workflow (2 stars, last pushed 4mo ago), licensed MIT. It adds 79 tokens to every session and 2,068 once invoked, about $0.0004 per session on Opus 5. 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.

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