agentmods.dev

test-driven-development

test-driven-development is a skill for Claude Code, Codex from musegate/Forgevia. It costs 17 tokens per session (2,537 once invoked), scanned A, original, no licence file.

A coding workflow that uses test-driven development, or TDD: writing a test before writing the code that should pass it.

In plain words
What is it for?
Use it when adding a feature or fixing a bug, starting with tests before implementation code.
Why use it?
It helps define expected behavior first and makes feature or bug-fix work easier to check.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

not rated 42repo 7mo ago A scan 17 tokens no licence

Good fit Use it when adding a feature or fixing a bug, starting with tests before implementation code.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/musegate/forgevia/test-driven-development
View source ↗ musegate/Forgevia
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 musegate/Forgevia --skill test-driven-development
Clone the repo
git clone --depth 1 https://github.com/musegate/Forgevia

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 test-driven-development

README.md
[![agentmods](https://agentmods.dev/badge/skills/musegate/forgevia/test-driven-development/github.svg)](https://agentmods.dev/skills/musegate/forgevia/test-driven-development)
Your own site
<a href="https://agentmods.dev/skills/musegate/forgevia/test-driven-development"><img src="https://agentmods.dev/badge/skills/musegate/forgevia/test-driven-development/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 test-driven-development

Your own site · 80×15
<a href="https://agentmods.dev/skills/musegate/forgevia/test-driven-development"><img src="https://agentmods.dev/badge/skills/musegate/forgevia/test-driven-development.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 17 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,537 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 unknown 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 $0.00017 $0.02537
Opus 5.5 $0.00007 $0.01015
Sonnet 5.5 $0.00003 $0.00507
Haiku 4.5 $0.00002 $0.00254

Measured 2mo ago against content hash 0c09aba5a9f6, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

test-driven-development 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 2mo 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.

assets/claude/superpowers/skills/test-driven-development/SKILL.md · 384 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 2mo ago First seen · 384 lines · 17 tokens per session scan A 0c09aba5a9f6

Subscribe to this mod's changes

test-driven-development is a skill published in the GitHub repository musegate/Forgevia (42 stars, last pushed 7mo ago), with no licence file. It adds 17 tokens to every session and 2,537 once invoked, about $0.0001 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 2026-08-30.

TDDTesting
Related

test-driven-development compared with skills from other repositories

test-driven-development next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
test-driven-developmentmusegate/ForgeviaSkill427mo agononeA17Claude Code, Codex
engram-testing-coverageGentleman-Programming/engramSkill7.8kyesterdayMITA25Claude Code, Codex
principle-test-behavior-not-implementationmichael-denyer/pstack-claudeSkill4.1kyesterdayMITA50Claude Code
tddcodewithmukesh/dotnet-claude-kitSkill8052d agoMITA81Claude Code
nw-ddd-eventsourcingnWave-ai/nWaveSkill631yesterdayMITA38Claude Code
nw-fp-clojurenWave-ai/nWaveSkill631yesterdayMITA25Claude Code
nw-leanux-methodologynWave-ai/nWaveSkill631yesterdayMITA37Claude Code