tdd

tdd is a skill for Claude Code from tae0y/python-project-template. It costs 31 tokens per session (1,647 once invoked), scanned A, original, no licence file.

A Test-Driven Development workflow for code changes. TDD means writing a failing test first, then writing code to make it pass, and finally improving the code.

In plain words
What is it for?
Use it to guide development through tests for new features, fixes, and refactors.
Why use it?
It gives feature work, bug fixes, and refactoring a repeatable testing process before implementation begins.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

Good fit Use it to guide development through tests for new features, fixes, and refactors.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/tae0y/python-project-template/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 tae0y/python-project-template --skill tdd
Clone the repo
git clone --depth 1 https://github.com/tae0y/python-project-template

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 tdd

README.md
[![agentmods](https://agentmods.dev/badge/skills/tae0y/python-project-template/tdd/github.svg)](https://agentmods.dev/skills/tae0y/python-project-template/tdd)
Your own site
<a href="https://agentmods.dev/skills/tae0y/python-project-template/tdd"><img src="https://agentmods.dev/badge/skills/tae0y/python-project-template/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 tdd

Your own site · 80×15
<a href="https://agentmods.dev/skills/tae0y/python-project-template/tdd"><img src="https://agentmods.dev/badge/skills/tae0y/python-project-template/tdd.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 31 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,647 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 $0.00031 $0.01647
Opus 5.5 $0.00012 $0.00659
Sonnet 5.5 $0.00006 $0.00329
Haiku 4.5 $0.00003 $0.00165

Measured 1mo ago against content hash 9d11cbdb354b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

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 1mo 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.

.claude/skills/tdd/SKILL.md · 248 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. 1mo ago First seen · 248 lines · 31 tokens per session scan A 9d11cbdb354b

Subscribe to this mod's changes

tdd is a skill published in the GitHub repository tae0y/python-project-template (14 stars, last pushed 2mo ago), with no licence file. It adds 31 tokens to every session and 1,647 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 2026-09-01.

Related

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tdd-workflow

Drive implementation through a test-first loop: write a failing test, make it pass with the simplest change, then refactor under a green suite. Use when the user asks for TDD or test-driven development, wants tests written before the code, is adding behaviour to code that has tests, is fixing a bug and wants a…

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maddhruv/absolute · 104 tokens

tdd

Drive a change through a red-green-refactor loop - failing test first, minimal code to pass, then clean up. Use when implementing a feature or fixing a bug where correctness matters and a test can pin the behavior. Says "TDD", "test first", "red green refactor", "write the test first".

rohitg00/pro-workflow · 68 tokens

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