brainstorm

brainstorm is a skill for Claude Code, Codex from bnet47/codexicon. It costs 25 tokens per session (545 once invoked), scanned A, original, MIT.

A discussion process for turning an unclear feature request into an agreed, written plan before coding begins. It examines the relevant project context and compares practical implementation choices.

In plain words
What is it for?
It asks blocking questions, defines success and non-goals, compares two or three approaches, recommends one, and saves an approved feature specification.
Why use it?
Unclear behavior or competing approaches can lead to rework and mismatched expectations. This identifies the real questions, constraints, risks, and smallest useful version.

Skill for Claude CodeCodex

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

Good fit It asks blocking questions, defines success and non-goals, compares two or three approaches, recommends one, and saves an approved feature specification.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/bnet47/codexicon/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 bnet47/codexicon --skill brainstorm
Clone the repo
git clone --depth 1 https://github.com/bnet47/codexicon

Made for: Claude Code, Codex.

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/bnet47/codexicon/brainstorm/github.svg)](https://agentmods.dev/skills/bnet47/codexicon/brainstorm)
Your own site
<a href="https://agentmods.dev/skills/bnet47/codexicon/brainstorm"><img src="https://agentmods.dev/badge/skills/bnet47/codexicon/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/bnet47/codexicon/brainstorm"><img src="https://agentmods.dev/badge/skills/bnet47/codexicon/brainstorm.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 25 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 545 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 $0.00025 $0.00545
Opus 5.5 $0.00010 $0.00218
Sonnet 5.5 $0.00005 $0.00109
Haiku 4.5 $0.00003 $0.00055

Measured 1mo ago against content hash fbbb91ca5cff, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, 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 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.

.agents/skills/brainstorm/SKILL.md · 46 lines

How it starts

The opening of the file, as written. The whole thing — 46 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Brainstorm

Announce: "I'm using brainstorm to resolve the feature choices before implementation."

1. Load relevant project context

Read root SPEC.md and TASKS.md when present plus only the architecture, conventions, decisions, or prior specs relevant to the feature. If the repository is still unconfigured, route to $discover so the root contract is created.

2. Resolve the problem

Ask only genuinely blocking questions, batching related questions when practical, and stop when you can state:

  • the problem and affected person;
  • verifiable success;
  • constraints and non-goals;
  • the smallest shippable slice;
  • unresolved risks.

3. Compare approaches

Present two or three genuinely viable approaches with tradeoffs in behavior, complexity, reversibility, and verification. Recommend one and explain why. Ask for a choice only when the alternatives materially change the product or cost; otherwise proceed with the recommended reversible option and state the assumption.

4. Write the spec

After the direction is clear, append the requirements, interfaces, acceptance, anti-goals, assumptions, and a dated amendment to the root SPEC.md in place. Use the existing contract sections; do not create a separate brainstorm artifact:

## Amendments
- **[YYYY-MM-DD]:** [Chosen direction and rationale.]

Put the chosen problem, solution, acceptance, non-goals, constraints, first slice, and open questions in the matching root SPEC.md sections before adding the dated amendment entry.

Run python scripts/codexicon.py spec-check. Self-check that every criterion is testable, no placeholder remains, anti-goals are explicit, and the first slice is complete rather than scaffolding. For authorized implementation, use $write-plan to create or validate TASKS.md, then enter the shared $autonomous-build loop without a routine approval turn. Use task states TODO, ACTIVE, BLOCKED, and DONE; queue outcomes are READY, RESUME_ACTIVE, BLOCKED, COMPLETE, and INVALID.

Read the full file on GitHub · 46 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 Changed · -17 lines fbbb91ca5cff
  2. 1mo ago Changed · -1 tokens per session 8547a08b8698
  3. 1mo ago First seen · 63 lines · 26 tokens per session scan A da70d7ac84b8

Subscribe to this mod's changes

brainstorm is a skill published in the GitHub repository bnet47/codexicon (5 stars, last pushed 20d ago), licensed MIT. It adds 25 tokens to every session and 545 once invoked, about $0.0001 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 2026-08-31.