prax-tdd-workflow

prax-tdd-workflow is a skill for Claude Code, Codex from ChanningLua/prax-agent. It costs 24 tokens per session (132 once invoked), scanned A, original, MIT.

A test-driven development workflow that follows three stages: write a failing test, make the smallest change that passes it, then run verification. TDD means test-driven development.

In plain words
What is it for?
Use it to guide feature work or bug fixes through tests, implementation, and related build, type-check, and lint commands.
Why use it?
It requires real execution at each stage, reducing the risk of changing production code based on an untested assumption.

Skill for Claude CodeCodex

Part of the prax plugin — 4 skills, 4 commands, 1 agent shipped together

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/channinglua/prax-agent/prax-tdd-workflow
Any agent
npx skills add ChanningLua/prax-agent --skill prax-tdd-workflow
Clone the repo
git clone --depth 1 https://github.com/ChanningLua/prax-agent

Made for: Claude Code, Codex.

Or install prax, the plugin that ships this one along with the rest of its 4 skills, 4 commands, 1 agent.

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 prax-tdd-workflow

README.md
[![agentmods](https://agentmods.dev/badge/skills/channinglua/prax-agent/prax-tdd-workflow.svg)](https://agentmods.dev/skills/channinglua/prax-agent/prax-tdd-workflow)
Your own site
<a href="https://agentmods.dev/skills/channinglua/prax-agent/prax-tdd-workflow"><img src="https://agentmods.dev/badge/skills/channinglua/prax-agent/prax-tdd-workflow.svg" alt="Measured on agentmods" 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 132 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 $0.00024 $0.00132
Opus 5 $0.00012 $0.00066
Sonnet 5 $0.00005 $0.00026
Haiku 4.5 $0.00002 $0.00013

Measured 4d ago against content hash c45a4c343798, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

prax-tdd-workflow 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 4d 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.

src/prax/assets/claude/skills/prax-tdd-workflow/SKILL.md · 23 lines

What it actually says

Prax TDD Workflow

原则:

  • 先写失败测试
  • 再做最小修复
  • 最后跑验证闭环

最小流程:

  1. 写测试
  2. 运行测试确认 RED
  3. 修改实现
  4. 运行测试确认 GREEN
  5. 运行相关 build/typecheck/lint

不要做的事:

  • 没确认 RED 就改生产代码
  • 用"推测会通过"代替真实执行
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. 4d ago First seen · 23 lines · 24 tokens per session scan A c45a4c343798

Subscribe to this mod's changes

prax-tdd-workflow is a skill published in the GitHub repository ChanningLua/prax-agent (272 stars, last pushed 1mo ago), licensed MIT. It adds 24 tokens to every session and 132 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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