brainstorming-and-tdd

brainstorming-and-tdd is a skill for Claude Code, Codex from Sistema2D/FrameCode-VibeWork. It costs 18 tokens per session (471 once invoked), scanned A, original, Apache-2.0.

A planning method for turning a software change into clear, observable behavior and, when practical, proving it with tests written before implementation. TDD means test-driven development.

In plain words
What is it for?
It helps clarify requirements, record assumptions, choose the smallest useful test level, reproduce defects with failing tests, and guide implementation.
Why use it?
It reduces ambiguity and catches regressions by defining expected behavior, boundaries, and failure cases before changing code.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit It helps clarify requirements, record assumptions, choose the smallest useful test level, reproduce defects with failing tests, and guide implementation.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/sistema2d/framecode-vibework/brainstorming-and-tdd
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 Sistema2D/FrameCode-VibeWork --skill brainstorming-and-tdd
Clone the repo
git clone --depth 1 https://github.com/Sistema2D/FrameCode-VibeWork

Made for: Claude Code, Codex.

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 brainstorming-and-tdd

README.md
[![agentmods](https://agentmods.dev/badge/skills/sistema2d/framecode-vibework/brainstorming-and-tdd/github.svg)](https://agentmods.dev/skills/sistema2d/framecode-vibework/brainstorming-and-tdd)
Your own site
<a href="https://agentmods.dev/skills/sistema2d/framecode-vibework/brainstorming-and-tdd"><img src="https://agentmods.dev/badge/skills/sistema2d/framecode-vibework/brainstorming-and-tdd/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 brainstorming-and-tdd

Your own site · 80×15
<a href="https://agentmods.dev/skills/sistema2d/framecode-vibework/brainstorming-and-tdd"><img src="https://agentmods.dev/badge/skills/sistema2d/framecode-vibework/brainstorming-and-tdd.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 18 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 471 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 $0.00018 $0.00471
Opus 5 $0.00009 $0.00235
Sonnet 5 $0.00004 $0.00094
Haiku 4.5 $0.00002 $0.00047

Measured 9d ago against content hash 3f14c63843b6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

brainstorming-and-tdd 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 9d 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.

FCVW/skills/brainstorming-and-tdd/SKILL.md · 59 lines

How it starts

The opening of the file, as written. The whole thing — 59 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Behavior design and test-first development

Purpose

Turn an implementation request into observable behavior and use the smallest useful test-first loop to reduce ambiguity and regression risk.

Use conditions

Use for behavior changes where an automated unit, integration, contract, or end-to-end check is practical. Ask a blocking question only when missing information would materially change scope or outcome; otherwise state a bounded assumption and proceed.

Non-responsibilities

  • requiring TDD for pure documentation, exploratory spikes, or surfaces with no practical harness;
  • expanding the feature beyond agreed acceptance criteria;
  • replacing product decisions with test implementation details;
  • creating brittle tests that assert incidental structure instead of behavior.

Inputs

User outcome, current behavior, edge cases, constraints, acceptance criteria, affected interfaces, existing tests, and active plan.

Procedure

  1. Express the request as actors, trigger, observable result, boundaries, and failure cases.
  2. Resolve material ambiguity and record assumptions.
  3. Select the narrowest test level that proves the behavior.
  4. For a defect, reproduce it with a failing regression check when feasible; for legacy code, use a characterization test before changing behavior.
  5. Run the new check and confirm it fails for the intended reason.
  6. Implement the smallest plan-scoped change that satisfies it.
  7. Rerun the focused check, then the relevant regression suite.
  8. Refactor only while all checks remain green and within scope.

Required output

Concise behavior specification, assumptions, test level, red/green evidence, implementation scope, regression results, and any justified manual validation.

Validation

The test fails before implementation for the expected reason, passes after the change, remains meaningful if the defect is reintroduced, and does not depend on irrelevant internals.

Exit criteria

Exit when acceptance criteria are demonstrated by appropriate evidence, or when the missing test capability and alternative validation are recorded explicitly.

Read the full file on GitHub · 59 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. 9d ago First seen · 59 lines · 18 tokens per session scan A 3f14c63843b6

Subscribe to this mod's changes

brainstorming-and-tdd is a skill published in the GitHub repository Sistema2D/FrameCode-VibeWork (24 stars, last pushed 8d ago), licensed Apache-2.0. It adds 18 tokens to every session and 471 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 2026-08-30.

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