sw-brainstorm

sw-brainstorm is a skill for Claude Code from anton-abyzov/specweave. It costs 39 tokens per session (582 once invoked), scanned A, original, MIT.

A structured brainstorming process that compares several ways to solve a decision before selecting one. It records criteria, trade-offs, risks and rejected alternatives, then passes the chosen direction to specification work.

In plain words
What is it for?
Use it to explore options for a proposed project, compare approaches and turn the selected option into a planned increment.
Why use it?
Choosing an implementation too early can hide cheaper, safer or reversible options. This process separates generating ideas from judging them and makes the reasons for the choice visible.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter. Also seen: mentions subagents.

Good fit Use it to explore options for a proposed project, compare approaches and turn the selected option into a planned increment.

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Install with agentmods
npx agentmods add skills/anton-abyzov/specweave/sw-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 anton-abyzov/specweave --skill sw-brainstorm
Clone the repo
git clone --depth 1 https://github.com/anton-abyzov/specweave

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 sw-brainstorm

README.md
[![agentmods](https://agentmods.dev/badge/skills/anton-abyzov/specweave/sw-brainstorm/github.svg)](https://agentmods.dev/skills/anton-abyzov/specweave/sw-brainstorm)
Your own site
<a href="https://agentmods.dev/skills/anton-abyzov/specweave/sw-brainstorm"><img src="https://agentmods.dev/badge/skills/anton-abyzov/specweave/sw-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 sw-brainstorm

Your own site · 80×15
<a href="https://agentmods.dev/skills/anton-abyzov/specweave/sw-brainstorm"><img src="https://agentmods.dev/badge/skills/anton-abyzov/specweave/sw-brainstorm.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 39 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 582 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 $0.00039 $0.00582
Opus 5.5 $0.00016 $0.00233
Sonnet 5.5 $0.00008 $0.00116
Haiku 4.5 $0.00004 $0.00058

Measured 20d ago against content hash 07c65fb10aab, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

sw-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 20d 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/sw-brainstorm/SKILL.md · 49 lines

How it starts

The opening of the file, as written. The whole thing — 49 lines — stays where its author put it; the contents beside it link to each section on GitHub.

sw-brainstorm: diverge, converge, pick

Decides which thing to spec; it never replaces the spec. Hand the winner to sw-increment.

Depth

Depth Options Output
quick (default for a narrow question) 3 a table and a pick, in the conversation
standard 4 to 5 table, trade-offs, reports/brainstorm.md if an increment exists
deep 5 to 7, including "do nothing" and one contrarian written doc, rejected alternatives, risks

Steps

  1. Frame. One sentence: the decision and what makes an answer good. Write 3 to 5 criteria first (cost, time to ship, blast radius, reversibility, who maintains it). Choosing criteria after seeing the options is how bias gets in.
  2. Diverge. Generate before judging, and force variety: the obvious one, the cheap one (80% for 20%), buy instead of build, do nothing or defer (with its cost), and one that inverts an assumption everyone makes. Name each in 3 to 6 words.
  3. Converge. One table, option by criteria, with a "kills it if" per option. Then a short paragraph per survivor: how it works, what it costs, what breaks.
  4. Pick. The recommendation, the runner-up, and the one fact that would flip it. If the honest answer is "we need data", name the experiment.
  5. Hand off. specweave create-increment "<the pick>" (sw-increment) and paste the rejected alternatives into its Approach section.

Contested decisions

Run three lenses over the same options: advocate (strongest case for), critic (how each fails in production), pragmatist (what ships this week). If your tool supports subagents, run them in parallel; otherwise do three labelled passes in sequence. Merge.

Rules

  • Never grade an option while still generating options; give each the same scrutiny.
  • Tables and short paragraphs, not essays.
  • If the user already knows what they want, skip to sw-increment and say why.

Manual path (no CLI)

Nothing here needs the CLI; create the increment folder by hand as sw-increment describes.

Read the full file on GitHub · 49 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. 20d ago First seen · 49 lines · 39 tokens per session scan A 07c65fb10aab

Subscribe to this mod's changes

sw-brainstorm is a skill published in the GitHub repository anton-abyzov/specweave (165 stars, last pushed today), licensed MIT. It adds 39 tokens to every session and 582 once invoked, about $0.0002 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 2026-09-26.