brainstorm

A guided ideation command that turns a rough idea into a name, description, boundaries, and goal. It writes a short note that a later planning command can use.

In plain words
What is it for?
Shaping uncertain ideas, resuming earlier brainstorming, defining what belongs in scope, and preparing work for /envision.
Why use it?
It helps clarify what an idea is before detailed specification or implementation begins.

Command

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 commands/ackeskin/contexture/brainstorm
Clone the repo
git clone --depth 1 https://github.com/AcKeskin/contexture
Per session 71 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 307 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 $0.00071 $0.00307
Opus 5 $0.00036 $0.00153
Sonnet 5 $0.00014 $0.00061
Haiku 4.5 $0.00007 $0.00031

Measured 2d ago against content hash b7c0838873ca, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 2d 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.

commands/brainstorm.md · 17 lines

What it actually says

Run the brainstorm skill.

Forms:

  • /brainstorm — start shaping an idea (derive a slug once it has a name).
  • /brainstorm <slug> — start, or resume from an existing .claude/ideas/<slug>.md.

The stage before /envision: one organ, two moods — discuss (explore a loose idea) and crystallize (pin a blurry one down). It steers the conversation toward five things — name, one-paragraph description, edges (in / out), end goal, open edges — then proposes a crystallized note for accept / edit / reject. On accept it writes .claude/ideas/<slug>.md and points you at /envision <slug> to partition it into modules.

It converges (a brainstorm that ends without a crystallized note produced nothing), does not drift into spec-level detail (that's /spec, downstream), and never auto-fires or silently writes.

See ~/.claude/skills/brainstorm/SKILL.md for the full procedure.

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. 2d ago First seen · 17 lines · 71 tokens per session scan A b7c0838873ca

Subscribe to this mod's changes

brainstorm is a command published in the GitHub repository AcKeskin/contexture (2 stars, last pushed 1mo ago), licensed MIT. It adds 71 tokens to every session and 307 once invoked, about $0.0004 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.