brainstorm

A planning process for understanding a coding task, investigating the existing project, and writing a design specification before implementation begins. The specification must be approved before code is written.

In plain words
What is it for?
Use it for new features, major changes, or work that crosses several parts of a project. It helps define the problem, proposed design, boundaries, and conditions for success.
Why use it?
It turns a broad or complex feature request into an agreed plan, reducing misunderstandings and rework during implementation.

Skill for Claude CodeCodex

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 skills/greglas75/zuvo/brainstorm
Any agent
npx skills add greglas75/zuvo --skill brainstorm
Clone the repo
git clone --depth 1 https://github.com/greglas75/zuvo

Made for: Claude Code, Codex.

Per session 56 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 10,110 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00056 $0.10110
Opus 5 $0.00028 $0.05055
Sonnet 5 $0.00011 $0.02022
Haiku 4.5 $0.00006 $0.01011

Measured 2d ago against content hash 89be60593dd4, 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 1 finding 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

[Aggregator section. Lists the proof runners required by this spec (vitest, curl, playwright, chrome-devtools MCP, etc.) and any infrastructure prerequisites (test DB, fixture files, dev server). Per-AC proof bodies live
skills/brainstorm/SKILL.md · 684 lines

How it starts

The opening of the file, as written. The whole thing — 684 lines — stays where its author put it; the contents beside it link to each section on GitHub.

zuvo:brainstorm

Understand the problem thoroughly. Design a solution collaboratively. Write a spec. Get approval. Only then does anything get built.

Hard Gate

Do NOT write implementation code. This skill produces a design specification document. Implementation happens later via zuvo:plan and zuvo:execute. If the user asks to "just start coding" during brainstorm, explain that the spec must be approved first — skipping design leads to rework.

Mandatory File Loading

Phase 0 — Bootstrap (load before any work)

Include paths resolve relative to THIS SKILL.md's directory (not CWD): a ../../shared/includes/ reference means <plugin-root>/shared/includes/ — never resolve it against the project being worked on.

  1. ../../shared/includes/codesift-setup.md -- CodeSift discovery and initialization
  2. ../../shared/includes/env-compat.md -- Agent dispatch patterns per environment
  3. ../../shared/includes/acceptance-proof-protocol.md -- Per-AC proof contract for plan/execute
  4. ../../shared/includes/provided-artifact-supremacy.md -- Design-artifact supremacy (the Provided-Design Check runs BEFORE Phase 1, so this is Phase-0 mandatory, not deferred)

Deferred — Load when needed (NOT at startup)

  1. ../../rules/cq-patterns.md -- Load at Phase 3 (design decisions), NOT at Phase 0
  2. ../../shared/includes/run-logger.md -- Load at completion only
  3. ../../shared/includes/retrospective.md -- Load at completion only

Print the checklist:

CORE FILES LOADED:
  1. codesift-setup.md              -- READ
  2. env-compat.md                  -- READ
  3. acceptance-proof-protocol.md   -- READ
  4. provided-artifact-supremacy.md -- READ
  5. cq-patterns.md                 -- DEFERRED (Phase 3)
  6. run-logger.md                  -- DEFERRED (completion)
  7. retrospective.md               -- DEFERRED (completion)

If a Phase 0 file is missing, STOP. Deferred files are loaded when their phase begins.

Phase 0.1 — Retro checkpoint marker (run this bash at bootstrap)

Read the full file on GitHub · 684 lines

Files

What ships with it

4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 · 684 lines · 56 tokens per session scan A 89be60593dd4

Subscribe to this mod's changes

brainstorm is a skill published in the GitHub repository greglas75/zuvo (6 stars, last pushed 2d ago), licensed MIT. It adds 56 tokens to every session and 10,110 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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