brainstorm

A command that turns a rough idea into a written software specification. It reviews relevant project context and saves the result as a dated Markdown document in docs/specs/.

In plain words
What is it for?
Use it to define a feature or project change, record non-goals and open decisions, and create a committed design document without starting implementation automatically.
Why use it?
It gives an idea a clear scope, goals, proposed approach, acceptance criteria, and resolved defaults before 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/vrennat/developersdevelopers/brainstorm
Clone the repo
git clone --depth 1 https://github.com/vrennat/developersDevelopers
Per session 33 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 458 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 $0.00033 $0.00458
Opus 5 $0.00016 $0.00229
Sonnet 5 $0.00007 $0.00092
Haiku 4.5 $0.00003 $0.00046

Measured yesterday against content hash 9747163438c4, 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 yesterday.

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 · 36 lines

What it actually says

/brainstorm

Turn an idea into a written spec. Lean version: confirm only when there is genuine ambiguity. Default to your strongest recommendation; do not pause for "approve this section?" gates.

Procedure

  1. Read the user's idea. Skim project context (recent commits, existing docs in docs/specs/ and docs/plans/, top-level CLAUDE.md).
  2. Identify any genuinely ambiguous points: 2+ approaches with real tradeoffs, missing requirements, or scope decisions only the user can make. If none, skip to step 4.
  3. Ask all genuinely-ambiguous points in ONE batched message (numbered list). Wait for response. Do not ask one-at-a-time unless the next question depends on the prior answer.
  4. Draft the spec internally:
    • Overview, goals, non-goals
    • Architecture / approach (your recommended path; mention alternatives only if you genuinely think the user might want one)
    • Open questions for implementation (resolved with defaults, not TBDs)
    • Acceptance criteria
  5. Write the spec to docs/specs/YYYY-MM-DD-<slug>-design.md. Today's date, lowercase-dashed slug.
  6. Commit it: docs: initial design spec for <slug>.
  7. Tell the user where it is. Do NOT auto-trigger /impl or /plan.

Rules

  • "Approve this section?" gates are forbidden. The whole spec is one artifact for review at the end, not five.
  • Recommend, don't ask "what do you think?" — make the call, justify it in one sentence.
  • "Open questions" must have a default decision next to them, not "TBD".
  • If the spec covers >1 independent subsystem, decompose. Each subsystem gets its own spec.

Anti-patterns

  • Asking the user to pick between two equivalent options. If equivalent, pick one.
  • Writing a 500-line spec for a 50-line feature.
  • Asking permission to start writing.
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. yesterday First seen · 36 lines · 0 tokens per session scan A 9747163438c4

Subscribe to this mod's changes

brainstorm is a command published in the GitHub repository vrennat/developersDevelopers (2 stars, last pushed 1mo ago), licensed MIT. It adds 33 tokens to every session and 458 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.