brainstorming

brainstorming is a skill for Claude Code, Codex from SSBun/csl-agent-kit. It costs 48 tokens per session (581 once invoked), scanned A, original, MIT.

A planning guide for discussing a new feature or change before writing code. It helps clarify the goal, requirements, design choices, data flow, errors, and testing needs.

In plain words
What is it for?
Use it to shape features, components, or behavior changes when the scope or success criteria are not yet settled.
Why use it?
It reduces the risk of coding against unclear requirements or choosing an approach before its trade-offs are understood.

Skill for Claude CodeCodex

Part of the csl plugin — 33 skills, 2 commands, 5 agents, 10 hooks 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/ssbun/csl-agent-kit/brainstorming
Any agent
npx skills add SSBun/csl-agent-kit --skill brainstorming
Clone the repo
git clone --depth 1 https://github.com/SSBun/csl-agent-kit

Made for: Claude Code, Codex.

Or install csl, the plugin that ships this one along with the rest of its 33 skills, 2 commands, 5 agents, 10 hooks.

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 brainstorming

README.md
[![agentmods](https://agentmods.dev/badge/skills/ssbun/csl-agent-kit/brainstorming.svg)](https://agentmods.dev/skills/ssbun/csl-agent-kit/brainstorming)
Your own site
<a href="https://agentmods.dev/skills/ssbun/csl-agent-kit/brainstorming"><img src="https://agentmods.dev/badge/skills/ssbun/csl-agent-kit/brainstorming.svg" alt="Measured on agentmods" height="20"></a>
Per session 48 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 581 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 $0.00048 $0.00581
Opus 5 $0.00024 $0.00291
Sonnet 5 $0.00010 $0.00116
Haiku 4.5 $0.00005 $0.00058

Measured today against content hash b8c37ed53e4d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

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 today.

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.

skills/dev/brainstorming/SKILL.md · 58 lines

How it starts

The opening of the file, as written. The whole thing — 58 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Brainstorming Ideas Into Designs

Turn ideas into validated designs through dialogue — before writing implementation code.

When to Use

  • New feature or component with open design questions
  • User asks to explore options, trade-offs, or requirements
  • Scope or success criteria are not yet defined

Do not use for bug fixes, typo edits, or changes with an already-approved spec.

The Process

Understanding the idea:

  • Check current project state (files, docs, recent commits)
  • Ask questions one at a time to refine the idea
  • Prefer multiple choice when possible; open-ended is fine
  • Focus on purpose, constraints, and success criteria

Exploring approaches:

  • Propose 2–3 approaches with trade-offs
  • Lead with a recommendation and reasoning

Presenting the design:

  • Break into sections of ~200–300 words
  • Confirm after each section before continuing
  • Cover architecture, components, data flow, error handling, testing
  • Go back and clarify when something does not land

After the Design

Documentation:

  • Do not create a standalone design file by default. Create one only when the user requests a document artifact or the validated design needs a durable handoff for later implementation.
  • Before writing the artifact, require the owning canonical task ID. If it is missing, return to task activation instead of creating an unowned file.
  • Ask for confirmation before persisting an inferred durable handoff; do not ask again when the user explicitly requested a design doc, plan file, RFC, or written spec.
  • Write the validated design to tasks/artifacts/<task-id>/specs/YYYY-MM-DD-<topic>-design.md. Keep that path when the design later becomes accepted, implemented, or superseded.
  • Add ../artifacts/<task-id>/specs/YYYY-MM-DD-<topic>-design.md to the owning task record's Plan section, then follow the task workflow's sync and check requirements. Do not copy the design body into the record.
  • Use clear, concise prose (no dependency on external writing skills)

Read the full file on GitHub · 58 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. today Changed · +1 lines b8c37ed53e4d
  2. 4d ago First seen · 57 lines · 48 tokens per session scan A af1d30a3e566

Subscribe to this mod's changes

brainstorming is a skill published in the GitHub repository SSBun/csl-agent-kit (10 stars, last pushed 2d ago), licensed MIT. It adds 48 tokens to every session and 581 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 2026-08-31.

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