parallel-prompt-generator

parallel-prompt-generator is a skill for Claude Code from jpoutrin/product-forge. It costs 36 tokens per session (2,547 once invoked), scanned A, original, MIT.

A prompt-generation tool that turns existing task specification files into detailed instructions for coding agents.

In plain words
What is it for?
Use it to regenerate prompts from task files before running parallel agents.
Why use it?
It keeps agent instructions complete and consistent after tasks change, including their scope, requirements, boundaries, and completion signal.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter.

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-prompt-generator
Any agent
npx skills add jpoutrin/product-forge --skill parallel-prompt-generator
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-prompt-generator

README.md
[![agentmods](https://agentmods.dev/badge/skills/jpoutrin/product-forge/parallel-prompt-generator.svg)](https://agentmods.dev/skills/jpoutrin/product-forge/parallel-prompt-generator)
Your own site
<a href="https://agentmods.dev/skills/jpoutrin/product-forge/parallel-prompt-generator"><img src="https://agentmods.dev/badge/skills/jpoutrin/product-forge/parallel-prompt-generator.svg" alt="Measured on agentmods" height="20"></a>
Per session 36 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,547 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 $0.00036 $0.02547
Opus 5 $0.00018 $0.01273
Sonnet 5 $0.00007 $0.00509
Haiku 4.5 $0.00004 $0.00255

Measured 2d ago against content hash 125aeff6ac83, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

parallel-prompt-generator 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-prompt-generator/SKILL.md · 353 lines

How it starts

The opening of the file, as written. The whole thing — 353 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Prompt Generator

Generate agent-ready prompts from existing task specification files in tasks/.

CRITICAL: Prompt Template Requirements

Every generated prompt file MUST include ALL of these sections (see Step 4 for full template):

Section Purpose Required
=== REQUIRED SKILLS === Skills to invoke at start YES
=== CONTEXT === Shared project context YES
=== OBJECTIVE === Task goal YES
=== CONTRACTS === Contract file references YES
=== FILES TO CREATE === Scope CREATE YES
=== FILES TO MODIFY === Scope MODIFY YES
=== DO NOT MODIFY === Scope BOUNDARY YES
=== IMPLEMENTATION REQUIREMENTS === Requirements YES
=== ACCEPTANCE CRITERIA === Checklist YES
=== EXECUTION INSTRUCTIONS === How to implement MANDATORY
=== IMPORTANT RULES === Constraints MANDATORY
=== COMPLETION SIGNAL === touch .claude-task-complete MANDATORY

DO NOT generate prompts without the EXECUTION INSTRUCTIONS, IMPORTANT RULES, and COMPLETION SIGNAL sections.

When to Use

  • After editing task files in tasks/
  • To regenerate prompts with updated template
  • Before running cpo run if prompts are missing
  • To test different prompt formats

Input Requirements

The parallel directory must have:

parallel/TS-XXXX-slug/
  manifest.json       # Required: wave structure, agents
  context.md          # Required: shared context
  contracts/          # Required: types.py, api-schema.yaml
  tasks/              # Required: task-*.md files
    task-001-users.md
    task-002-products.md

Output

Generates:

parallel/TS-XXXX-slug/
  prompts/
    agent-prompts.md   # Wave summary and launch commands
    task-001.txt       # Individual agent prompt
    task-002.txt
    ...

Workflow

flowchart TB
    Start[("tasks/ folder")]
    Read["1. Read manifest.json"]
    Context["2. Load context.md"]
    Parse["3. Parse each task file"]
    Generate["4. Generate task-NNN.txt"]
    Summary["5. Create agent-prompts.md"]
    Done[("prompts/ ready")]

    Start --> Read
    Read --> Context
    Context --> Parse
    Parse --> Generate
    Generate --> Summary
    Summary --> Done

Read the full file on GitHub · 353 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 · 353 lines · 36 tokens per session scan A 125aeff6ac83

Subscribe to this mod's changes

parallel-prompt-generator is a skill published in the GitHub repository jpoutrin/product-forge (15 stars, last pushed 6mo ago), licensed MIT. It adds 36 tokens to every session and 2,547 once invoked, about $0.0002 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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