test-driven-development

test-driven-development is a skill for Claude Code, Codex from NeoLabs-Systems/NeoAgent. It costs 33 tokens per session (2,278 once invoked), scanned A, original, AGPL-3.0.

A test-driven development skill. Test-driven development, or TDD, means writing a test before the code that should make the test pass.

In plain words
What is it for?
Use it before implementing a feature or fixing a bug to follow the RED-GREEN-REFACTOR cycle: create a failing test, make it pass, and improve the code.
Why use it?
It gives feature and bug-fix work a repeatable check: first a failing test, then working code, then cleanup.

Skill for Claude CodeCodex

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/neolabs-systems/neoagent/test-driven-development
Any agent
npx skills add NeoLabs-Systems/NeoAgent --skill test-driven-development
Clone the repo
git clone --depth 1 https://github.com/NeoLabs-Systems/NeoAgent

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/neolabs-systems/neoagent/test-driven-development.svg)](https://agentmods.dev/skills/neolabs-systems/neoagent/test-driven-development)
Your own site
<a href="https://agentmods.dev/skills/neolabs-systems/neoagent/test-driven-development"><img src="https://agentmods.dev/badge/skills/neolabs-systems/neoagent/test-driven-development.svg" alt="Measured on agentmods" height="20"></a>
Per session 33 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,278 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00033 $0.02278
Opus 5 $0.00016 $0.01139
Sonnet 5 $0.00007 $0.00456
Haiku 4.5 $0.00003 $0.00228

Measured 3d ago against content hash 4af0b79bc313, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 3d 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.

server/catalog_sources/store-bundles/skills/software-development/test-driven-development/SKILL.md · 343 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

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. 3d ago First seen · 343 lines · 33 tokens per session scan A 4af0b79bc313

Subscribe to this mod's changes

test-driven-development is a skill published in the GitHub repository NeoLabs-Systems/NeoAgent (23 stars, last pushed 3d ago), licensed AGPL-3.0. It adds 33 tokens to every session and 2,278 once invoked, about $0.0002 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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