brainstorming

brainstorming is a skill for Claude Code from davekilleen/Dex. It costs 76 tokens per session (1,313 once invoked), scanned A, original, MIT.

A structured brainstorming guide for exploring what to build, why to build it, and which design choices to make before implementation.

In plain words
What is it for?
Use it before implementing features or components, planning changes, or comparing approaches to an ambiguous request.
Why use it?
It helps clarify uncertain requests and user intent before code or other changes begin.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

Part of the compound-engineering plugin — 17 skills, 19 commands shipped together

Good fit Use it before implementing features or components, planning changes, or comparing approaches to an ambiguous request.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/davekilleen/dex/brainstorming
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.

Any agent
npx skills add davekilleen/Dex --skill brainstorming
Clone the repo
git clone --depth 1 https://github.com/davekilleen/Dex

Made for: Claude Code.

Or install compound-engineering, the plugin that ships this one along with the rest of its 17 skills, 19 commands.

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/davekilleen/dex/brainstorming/github.svg)](https://agentmods.dev/skills/davekilleen/dex/brainstorming)
Your own site
<a href="https://agentmods.dev/skills/davekilleen/dex/brainstorming"><img src="https://agentmods.dev/badge/skills/davekilleen/dex/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 brainstorming

Your own site · 80×15
<a href="https://agentmods.dev/skills/davekilleen/dex/brainstorming"><img src="https://agentmods.dev/badge/skills/davekilleen/dex/brainstorming.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 76 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,313 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 $0.00076 $0.01313
Opus 5.5 $0.00030 $0.00525
Sonnet 5.5 $0.00015 $0.00263
Haiku 4.5 $0.00008 $0.00131

Measured 1mo ago against content hash 38fbe289b7fc, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, 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 1mo 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.

Origin

Copies of this mod

2 near-identical copies found in the catalogue:

.claude/plugins/compound-engineering/skills/brainstorming/SKILL.md · 191 lines

How it starts

The opening of the file, as written. The whole thing — 191 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Brainstorming

This skill provides detailed process knowledge for effective brainstorming sessions that clarify WHAT to build before diving into HOW to build it.

When to Use This Skill

Brainstorming is valuable when:

  • Requirements are unclear or ambiguous
  • Multiple approaches could solve the problem
  • Trade-offs need to be explored with the user
  • The user hasn't fully articulated what they want
  • The feature scope needs refinement

Brainstorming can be skipped when:

  • Requirements are explicit and detailed
  • The user knows exactly what they want
  • The task is a straightforward bug fix or well-defined change

Core Process

Phase 0: Assess Requirement Clarity

Before diving into questions, assess whether brainstorming is needed.

Signals that requirements are clear:

  • User provided specific acceptance criteria
  • User referenced existing patterns to follow
  • User described exact behavior expected
  • Scope is constrained and well-defined

Signals that brainstorming is needed:

  • User used vague terms ("make it better", "add something like")
  • Multiple reasonable interpretations exist
  • Trade-offs haven't been discussed
  • User seems unsure about the approach

If requirements are clear, suggest: "Your requirements seem clear. Consider proceeding directly to planning or implementation."

Phase 1: Understand the Idea

Ask questions one at a time to understand the user's intent. Avoid overwhelming with multiple questions.

Question Techniques:

  1. Prefer multiple choice when natural options exist

    • Good: "Should the notification be: (a) email only, (b) in-app only, or (c) both?"
    • Avoid: "How should users be notified?"
  2. Start broad, then narrow

    • First: What is the core purpose?
    • Then: Who are the users?
    • Finally: What constraints exist?
  3. Validate assumptions explicitly

    • "I'm assuming users will be logged in. Is that correct?"
  4. Ask about success criteria early

    • "How will you know this feature is working well?"

Read the full file on GitHub · 191 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. 1mo ago First seen · 191 lines · 76 tokens per session scan A 38fbe289b7fc

Subscribe to this mod's changes

brainstorming is a skill published in the GitHub repository davekilleen/Dex (508 stars, last pushed 2d ago), licensed MIT. It adds 76 tokens to every session and 1,313 once invoked, about $0.0003 per session on Opus 5.5. 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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