brainstorm

A collaborative design workflow that turns an idea into an agreed implementation specification.

In plain words
What is it for?
It helps plan changes by reviewing project files, related memories and constraints, independent subsystems, external dependencies, and implementation details.
Why use it?
It makes the agent inspect the existing project, identify scope and research needs, and resolve design choices before coding begins.

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

Made for: Claude Code, Codex.

Per session 15 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,408 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 $0.00015 $0.01408
Opus 5 $0.00008 $0.00704
Sonnet 5 $0.00003 $0.00282
Haiku 4.5 $0.00002 $0.00141

Measured yesterday against content hash fec7c8a4e5ab, 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.

skills/brainstorm/SKILL.md · 66 lines

How it starts

The opening of the file, as written. The whole thing — 66 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Brainstorm

Turn ideas into thorough specs through collaborative dialogue.

Process

  1. Explore project context — check files, docs, recent commits, existing patterns. Understand what exists before proposing changes.

    Also consult the auto-memory system (MEMORY.md is already in context). Read any feedback or user memories that bear on this work — recurring rules the user has stated before ("test before claiming done", "no AI attribution in commits", "always use existing utils", "no comment slop") belong pre-populated in the spec's User Constraints section, not waiting on the user to restate them session after session. If a memory is stale relative to the current code, trust the code and update or remove the memory rather than acting on it.

  2. Assess scope — if the request spans multiple independent subsystems, decompose first. Each subsystem gets its own brainstorm -> spec -> execute cycle. Subsystems are "independent" when they don't share data models, UI components, or cross-cutting concerns. If two pieces need to agree on a shared interface, design them together.

  3. Identify research needs — if the task involves external APIs, libraries, or patterns you haven't verified, invoke meridian:research before continuing. Do not design around assumptions about how an API works.

  4. Ask clarifying questions — but only when the answer changes the spec. Questions are gates with cost: every question stalls progress and trades the user's attention for information you could often have inferred. Before asking anything, re-read what the user already handed you — the request, any linked plan, handoff doc, or spec — in full; the answer is usually already there, and a question it already answers reads as not having read it. Then ask only when both are true:

Read the full file on GitHub · 66 lines

Files

What ships with it

2 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. yesterday First seen · 66 lines · 15 tokens per session scan A fec7c8a4e5ab

Subscribe to this mod's changes

brainstorm is a skill published in the GitHub repository KodingDev/meridian (5 stars, last pushed 1mo ago), licensed MIT. It adds 15 tokens to every session and 1,408 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 2026-08-31.

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