tdd

tdd is a skill for Claude Code, Codex from mrzhangguoguo/oh-my-workbuddy. It costs 24 tokens per session (368 once invoked), scanned A, original, MIT.

A reference guide for test-driven development (TDD), a method where you write a failing test before the code that should make it pass. It is deprecated as a standalone add-on.

In plain words
What is it for?
Use the guidance when planning implementation work that follows the red-green-refactor cycle: write a failing test, make it pass, then improve the code. It is mainly kept for reference.
Why use it?
It documents a test-first workflow, but should not be invoked separately because that discipline now belongs in the normal planning and implementation process.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions Codex.

Good fit Use the guidance when planning implementation work that follows the red-green-refactor cycle: write a failing test, make it pass, then improve the code. It is mainly kept for reference.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/mrzhangguoguo/oh-my-workbuddy/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 mrzhangguoguo/oh-my-workbuddy --skill tdd
Clone the repo
git clone --depth 1 https://github.com/mrzhangguoguo/oh-my-workbuddy

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 tdd

README.md
[![agentmods](https://agentmods.dev/badge/skills/mrzhangguoguo/oh-my-workbuddy/tdd/github.svg)](https://agentmods.dev/skills/mrzhangguoguo/oh-my-workbuddy/tdd)
Your own site
<a href="https://agentmods.dev/skills/mrzhangguoguo/oh-my-workbuddy/tdd"><img src="https://agentmods.dev/badge/skills/mrzhangguoguo/oh-my-workbuddy/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/mrzhangguoguo/oh-my-workbuddy/tdd"><img src="https://agentmods.dev/badge/skills/mrzhangguoguo/oh-my-workbuddy/tdd.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 24 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 368 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 $0.00024 $0.00368
Opus 5 $0.00012 $0.00184
Sonnet 5 $0.00005 $0.00074
Haiku 4.5 $0.00002 $0.00037

Measured 11d ago against content hash 8821d9c7b58a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, 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 11d 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.

skills/tdd/SKILL.md · 29 lines

What it actually says

Ported from oh-my-codex tdd. OMX runtime conventions ($macro invocation, omx CLI, .omx/ state directory) are replaced with WorkBuddy idioms (Skill tool, Agent tool, task list, .workbuddy/memory).

TDD — deprecated

Hard-deprecated as a standalone skill. Do not invoke or route this skill.

Keep test-first discipline inside the active implementation workflow (the plan skill and normal implementation flow). The discipline is the value; here it is for reference:

The Iron Law: NO PRODUCTION CODE WITHOUT A FAILING TEST FIRST. Write code before the test? Delete it and start over.

Red-Green-Refactor cycle:

  1. RED — Write the next failing test; run it; it MUST fail. If it passes, the test is wrong.
  2. GREEN — Write only enough code to pass. No extras. Run; it MUST pass.
  3. REFACTOR — Improve quality; run tests after every change; must stay green.
  4. REPEAT — Next failing test.

Enforcement: code-before-test → stop and write the test; test-passes-first → fix it to fail; multiple features per cycle → one test, one feature; skipping refactor → go back and clean up.

For durable multi-goal execution that should keep this discipline, use ultragoal; for the implementation workflow itself, use plan.

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. 11d ago First seen · 29 lines · 24 tokens per session scan A 8821d9c7b58a

Subscribe to this mod's changes

tdd is a skill published in the GitHub repository mrzhangguoguo/oh-my-workbuddy (2 stars, last pushed 2mo ago), licensed MIT. It adds 24 tokens to every session and 368 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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