skillful-agent-system-builder: Skill for Claude Code

.agents/skills/multi-agent-brainstorming/SKILL.md

multi-agent-brainstorming is a skill for Claude Code, Codex from houarnu166/skillful-agent-system-builder. It costs 62 tokens per session (1,162 once invoked), scanned A, original, MIT.

A structured design-review process in which separate agents take defined roles to propose, critique, and improve an idea in sequence.

In plain words
What is it for?
Use it to review designs, compare alternatives, record decisions, and test technical or non-functional requirements before building.
Why use it?
It exposes hidden assumptions, possible failures, and missed requirements before implementation, while keeping the review focused.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

This is houarnu166/skillful-agent-system-builder's own configuration. It tells Claude Code and Codex how to work on skillful-agent-system-builder itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything skillful-agent-system-builder configures →

Reuse

Borrowing it

Nothing to install: this file belongs to houarnu166/skillful-agent-system-builder. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/houarnu166/skillful-agent-system-builder/main/.agents/skills/multi-agent-brainstorming/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/houarnu166/skillful-agent-system-builder

Made for: Claude Code, Codex.

Wrote this? Show the measurements

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agentmods badge for multi-agent-brainstorming

README.md
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Your own site
<a href="https://agentmods.dev/skills/houarnu166/skillful-agent-system-builder/multi-agent-brainstorming"><img src="https://agentmods.dev/badge/skills/houarnu166/skillful-agent-system-builder/multi-agent-brainstorming/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for multi-agent-brainstorming

Your own site · 80×15
<a href="https://agentmods.dev/skills/houarnu166/skillful-agent-system-builder/multi-agent-brainstorming"><img src="https://agentmods.dev/badge/skills/houarnu166/skillful-agent-system-builder/multi-agent-brainstorming.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 62 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,162 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00062 $0.01162
Opus 5 $0.00031 $0.00581
Sonnet 5 $0.00012 $0.00232
Haiku 4.5 $0.00006 $0.00116

Measured 9d ago against content hash 15a494350ef9, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

multi-agent-brainstorming 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 9d 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.

.agents/skills/multi-agent-brainstorming/SKILL.md · 257 lines

How it starts

The opening of the file, as written. The whole thing — 257 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Multi-Agent Brainstorming (Structured Design Review)

Purpose

Transform a single-agent design into a robust, review-validated design by simulating a formal peer-review process using multiple constrained agents.

This skill exists to:

  • surface hidden assumptions
  • identify failure modes early
  • validate non-functional constraints
  • stress-test designs before implementation
  • prevent idea swarm chaos

This is not parallel brainstorming. It is sequential design review with enforced roles.


Operating Model

  • One agent designs.
  • Other agents review.
  • No agent may exceed its mandate.
  • Creativity is centralized; critique is distributed.
  • Decisions are explicit and logged.

The process is gated and terminates by design.


Agent Roles (Non-Negotiable)

Each agent operates under a hard scope limit.

1️⃣ Primary Designer (Lead Agent)

Role:

  • Owns the design
  • Runs the standard brainstorming skill
  • Maintains the Decision Log

May:

  • Ask clarification questions
  • Propose designs and alternatives
  • Revise designs based on feedback

May NOT:

  • Self-approve the final design
  • Ignore reviewer objections
  • Invent requirements post-lock

2️⃣ Skeptic / Challenger Agent

Role:

  • Assume the design will fail
  • Identify weaknesses and risks

May:

  • Question assumptions
  • Identify edge cases
  • Highlight ambiguity or overconfidence
  • Flag YAGNI violations

May NOT:

  • Propose new features
  • Redesign the system
  • Offer alternative architectures

Prompting guidance:

“Assume this design fails in production. Why?”


3️⃣ Constraint Guardian Agent

Role:

  • Enforce non-functional and real-world constraints

Focus areas:

  • performance
  • scalability
  • reliability
  • security & privacy
  • maintainability
  • operational cost

May:

  • Reject designs that violate constraints
  • Request clarification of limits

May NOT:

  • Debate product goals
  • Suggest feature changes
  • Optimize beyond stated requirements

Read the full file on GitHub · 257 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. 9d ago First seen · 257 lines · 62 tokens per session scan A 15a494350ef9

Subscribe to this mod's changes

multi-agent-brainstorming is a skill published in the GitHub repository houarnu166/skillful-agent-system-builder (23 stars, last pushed 7mo ago), licensed MIT. It adds 62 tokens to every session and 1,162 once invoked, about $0.0003 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 2026-08-30.

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