parallel-validate-prompts

parallel-validate-prompts is a skill for Claude Code from jpoutrin/product-forge. It costs 14 tokens per session (2,121 once invoked), scanned A, original, MIT.

A checker for prompt files used to divide development work among multiple coding agents. It verifies that each file contains the sections those agents need, and can regenerate incomplete prompts.

In plain words
What is it for?
Use it to scan task prompts, report which required sections are missing, and optionally repair non-compliant files.
Why use it?
It catches missing instructions before parallel work starts, reducing failed or inconsistent agent tasks.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter. Also seen: mentions Claude Code.

Part of the product-design plugin — 43 skills, 8 agents shipped together

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/jpoutrin/product-forge/parallel-validate-prompts
Any agent
npx skills add jpoutrin/product-forge --skill parallel-validate-prompts
Clone the repo
git clone --depth 1 https://github.com/jpoutrin/product-forge

Made for: Claude Code.

Or install product-design, the plugin that ships this one along with the rest of its 43 skills, 8 agents.

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 parallel-validate-prompts

README.md
[![agentmods](https://agentmods.dev/badge/skills/jpoutrin/product-forge/parallel-validate-prompts.svg)](https://agentmods.dev/skills/jpoutrin/product-forge/parallel-validate-prompts)
Your own site
<a href="https://agentmods.dev/skills/jpoutrin/product-forge/parallel-validate-prompts"><img src="https://agentmods.dev/badge/skills/jpoutrin/product-forge/parallel-validate-prompts.svg" alt="Measured on agentmods" height="20"></a>
Per session 14 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,121 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 5.1 $0.00014 $0.02121
Opus 5 $0.00007 $0.01060
Sonnet 5 $0.00003 $0.00424
Haiku 4.5 $0.00001 $0.00212

Measured 2d ago against content hash 8c0b04030978, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

parallel-validate-prompts 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.

plugins/product-design/skills/parallel-validate-prompts/SKILL.md · 302 lines

How it starts

The opening of the file, as written. The whole thing — 302 lines — stays where its author put it; the contents beside it link to each section on GitHub.

parallel-validate-prompts

Category: Parallel Development

Usage

/parallel-validate-prompts <parallel-dir> [--fix] [--verbose]

Arguments

Argument Required Description
<parallel-dir> Yes Path to parallel folder (e.g., parallel/TS-0042-inventory/)
--fix No Automatically regenerate non-compliant prompts
--verbose No Show detailed validation for each prompt

Purpose

Validate that generated prompt files in prompts/ contain all required sections for successful agent execution. This command:

  1. Scans all prompts/task-*.txt files
  2. Validates presence of mandatory sections
  3. Reports compliance status
  4. Optionally regenerates non-compliant prompts

Use this to verify prompts generated elsewhere (other tools, manual creation, or older decomposition runs) before running cpo run.

Required Sections

Every prompt file MUST contain these sections (see parallel-prompt-generator skill):

Section Marker Purpose
Skills === REQUIRED SKILLS === Skills to invoke at start
Context === CONTEXT === Shared project context
Objective === OBJECTIVE === Task goal
Contracts === CONTRACTS === Contract file references
Files to Create === FILES TO CREATE === Scope CREATE
Files to Modify === FILES TO MODIFY === Scope MODIFY
Do Not Modify === DO NOT MODIFY === Scope BOUNDARY
Requirements === IMPLEMENTATION REQUIREMENTS === Implementation details
Acceptance === ACCEPTANCE CRITERIA === Checklist items
Execution === EXECUTION INSTRUCTIONS === How to implement
Rules === IMPORTANT RULES === Constraints
Output Format === OUTPUT FORMAT (REQUIRED) === JSON output block
Completion === COMPLETION SIGNAL === touch .claude-task-complete

The last four sections (bold) are critical - prompts missing these will fail to produce structured output.

Read the full file on GitHub · 302 lines

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 · 302 lines · 14 tokens per session scan A 8c0b04030978

Subscribe to this mod's changes

parallel-validate-prompts is a skill published in the GitHub repository jpoutrin/product-forge (15 stars, last pushed 6mo ago), licensed MIT. It adds 14 tokens to every session and 2,121 once invoked, about $0.0001 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 2026-09-03.

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