speckit.spex.brainstorm

speckit.spex.brainstorm is a command for Claude Code from rhuss/cc-spex. It costs 17 tokens per session (5,162 once invoked), scanned A, original, Apache-2.0.

A guided brainstorming command that turns a rough software idea into a written, agreed-upon specification, meaning a clear description of what to build and why.

In plain words
What is it for?
Use it to discuss a feature, record the problem and chosen approach, and prepare material for a formal specification and implementation plan.
Why use it?
It exposes alternatives and unresolved questions before implementation begins. This reduces the chance of building the wrong behavior from an unclear idea.

Command for Claude Code

Written for Claude Code: a Claude Code command (commands/*.md). Also seen: mentions Claude Code.

Good fit Use it to discuss a feature, record the problem and chosen approach, and prepare material for a formal specification and implementation plan.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/rhuss/cc-spex/speckit.spex.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.

Clone the repo
git clone --depth 1 https://github.com/rhuss/cc-spex

Made for: Claude Code.

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 speckit.spex.brainstorm

README.md
[![agentmods](https://agentmods.dev/badge/commands/rhuss/cc-spex/speckit.spex.brainstorm.svg)](https://agentmods.dev/commands/rhuss/cc-spex/speckit.spex.brainstorm)
Your own site
<a href="https://agentmods.dev/commands/rhuss/cc-spex/speckit.spex.brainstorm"><img src="https://agentmods.dev/badge/commands/rhuss/cc-spex/speckit.spex.brainstorm.svg" alt="Measured on agentmods" height="20"></a>
Per session 17 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 5,162 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 $0.00017 $0.05162
Opus 5 $0.00009 $0.02581
Sonnet 5 $0.00003 $0.01032
Haiku 4.5 $0.00002 $0.00516

Measured 8d ago against content hash 73348f4a6c08, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

speckit.spex.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 8d 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.

specs/038-neutral-command-vocab/pre-rewrite-snapshot/spex/commands/speckit.spex.brainstorm.md · 520 lines

How it starts

The opening of the file, as written. The whole thing — 520 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Brainstorming Ideas Into Specifications

Help turn rough ideas into clear, agreed-upon feature descriptions through natural collaborative dialogue. The output is a brainstorm document capturing the problem, approaches considered, and the decision, ready for formal specification.

Key Principle: Brainstorming explores WHAT to build and WHY. The formal spec (via /speckit-specify) and implementation planning come after.

Idea Inbox: On startup, check brainstorm/idea-inbox.md for accumulated review ideas and offer them as brainstorm seeds (see step 3). After creating a brainstorm document from inbox items, remove consumed entries (see step 8). When invoked after a review discussion that contained deferred-idea signals ("out of scope", "worth considering later", "design tension", "follow-up", "for a future PR"), also mention that ideas can be added to the inbox manually.

spex extension commands use the speckit-spex-* prefix (e.g., /speckit-spex-brainstorm). speckit core commands use the speckit- prefix (e.g., /speckit-specify, /speckit-plan).

Commands like /spex:specify, /spex:plan, /spex:implement, /spex:tasks DO NOT EXIST.

Checklist

You MUST create a task for each of these items and complete them in order:

  1. Initialize spec-kit - ensure specify CLI and project are set up
  2. Explore project context - check files, specs, constitution, recent commits
  3. Check idea inbox - check brainstorm/idea-inbox.md for accumulated ideas from reviews, offer as brainstorm seeds
  4. Check for related brainstorms - scan brainstorm/ for existing docs on similar topics, offer to update or create new
  5. Ask clarifying questions - one at a time, understand purpose/constraints/success criteria
  6. Propose 2-3 approaches - with trade-offs and your recommendation
  7. Reach agreement - confirm the chosen approach and scope with the user
  8. Write brainstorm document - persist session summary to brainstorm/NN-topic-slug.md, optionally create GitHub/GitLab issue. If seeded from inbox items, remove consumed entries from brainstorm/idea-inbox.md
  9. Update overview - create or refresh brainstorm/00-overview.md with index, open threads, parked ideas
  10. Transition - offer next steps

Read the full file on GitHub · 520 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. 8d ago First seen · 520 lines · 17 tokens per session scan A 73348f4a6c08

Subscribe to this mod's changes

speckit.spex.brainstorm is a command published in the GitHub repository rhuss/cc-spex (115 stars, last pushed 20d ago), licensed Apache-2.0. It adds 17 tokens to every session and 5,162 once invoked, about $0.0001 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.