Brainstorm

Brainstorm is a skill for Claude Code from Nagiliant/Genesis-Legacy-V2. It costs 38 tokens per session (1,053 once invoked), scanned A, original, Apache-2.0.

An interactive discussion for generating ideas and recording decisions during a project.

In plain words
What is it for?
Use it at a project stage boundary to challenge the current thinking, compare alternatives, control scope, and capture agreed decisions.
Why use it?
It uncovers contradictions, missing details, hidden costs, dependencies, and assumptions before they become implementation problems.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter.

Part of the genesis-spec-kit plugin — 23 skills shipped together

Good fit Use it at a project stage boundary to challenge the current thinking, compare alternatives, control scope, and capture agreed decisions.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/nagiliant/genesis-legacy-v2/genesis-brainstorm
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 Nagiliant/Genesis-Legacy-V2 --skill genesis-brainstorm
Clone the repo
git clone --depth 1 https://github.com/Nagiliant/Genesis-Legacy-V2

Made for: Claude Code.

Or install genesis-spec-kit, the plugin that ships this one along with the rest of its 23 skills.

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 Brainstorm

README.md
[![agentmods](https://agentmods.dev/badge/skills/nagiliant/genesis-legacy-v2/genesis-brainstorm/github.svg)](https://agentmods.dev/skills/nagiliant/genesis-legacy-v2/genesis-brainstorm)
Your own site
<a href="https://agentmods.dev/skills/nagiliant/genesis-legacy-v2/genesis-brainstorm"><img src="https://agentmods.dev/badge/skills/nagiliant/genesis-legacy-v2/genesis-brainstorm/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 Brainstorm

Your own site · 80×15
<a href="https://agentmods.dev/skills/nagiliant/genesis-legacy-v2/genesis-brainstorm"><img src="https://agentmods.dev/badge/skills/nagiliant/genesis-legacy-v2/genesis-brainstorm.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 38 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,053 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 $0.00038 $0.01053
Opus 5 $0.00019 $0.00526
Sonnet 5 $0.00008 $0.00211
Haiku 4.5 $0.00004 $0.00105

Measured 11d ago against content hash 505ccc1e509b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

Brainstorm 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 11d 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.

skills/genesis-brainstorm/SKILL.md · 91 lines

How it starts

The opening of the file, as written. The whole thing — 91 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Brainstorm — Ideation & Decision Capture

An opinionated interactive dialogue, run at any pipeline boundary, for structured ideation and decision capture — not template-filling. It surfaces contradictions, dependencies, cost concerns, and untested assumptions through conversation.

Process

  1. Deep context load (before saying anything substantive): project-state.md, the constitution, design docs, any existing spec.md, the prior brainstorm-log.md, and approvals/master.json to fix the pipeline position.
  2. Open with 3–5 sharp, categorized observations, each tagged:
    • Contradiction — conflicts with an existing decision
    • Missing Piece — a gap in current thinking
    • Cost Concern — more expensive than it looks
    • Untested Assumption — taken for granted without evidence
    • Cross-Feature Dependency — touches another feature --boundary <phase> scopes the observations to the upcoming phase (e.g. --boundary micro).
  3. Dialogue — challenge assumptions, propose alternatives, reference the constitution and prior decisions, flag scope creep against the spec tier. No monologues, no reflexive agreement.
  4. Convergence detection — explicit ("capture this", "lock it in") or prompted once the exchange shifts from exploring to refining.
  5. Capture the session record (only after explicit confirmation): create the feature branch and directory if needed, append a session block to brainstorm-log.md, commit (brainstorm: {feature}), update project-state.md.

Brainstorm log block

# Brainstorm Session: {date} — {boundary or topic}

## Observations
1. **{Category}:** {observation}

## Decisions
### {Topic}
- {Decision point}: {what was decided}    # numbered D-NNN

## Brainstorm Capture
{Insights that emerged — cross-spec observations, design improvements,
things that affect other features or future specs.}
- {Insight}

## Scope Tier
{patch|feature|epic} — {reasoning}

--tier {patch|feature|epic} sets proportional ceremony and persists to /genesis-accept.

Read the full file on GitHub · 91 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. 11d ago First seen · 91 lines · 38 tokens per session scan A 505ccc1e509b

Subscribe to this mod's changes

Brainstorm is a skill published in the GitHub repository Nagiliant/Genesis-Legacy-V2 (2 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 38 tokens to every session and 1,053 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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