tdd

80 / 100 · Low risk

Fine to try.

By Asymmetric-al/core (GitHub) · coding · 370 stars · scanned at commit 9a2e00f

Test-driven development for substantive feature, bug-fix, and behavior-changing work. Use automatically when implementing features, fixing bugs, or changing behavior (red → green → refactor). Also use when the user mentions TDD, /tdd, /TDD, or red-green-refactor. Do not use for documentation-only, formatting-only, exact generated-mirror, or provenance-only changes.

Works with any agent that supports SKILL.md skills.

What this skill can do

Connects to the internet

The author does not mention this.

Found in 4 places.

.agents/skills/tdd/mocking.md, line 44getUser: (id) => fetch(`/users/${id}`),
.agents/skills/tdd/mocking.md, line 45getOrders: (userId) => fetch(`/users/${userId}/orders`),
.agents/skills/tdd/mocking.md, line 46createOrder: (data) => fetch("/orders", { method: "POST", body: data }),

Show 1 more

.agents/skills/tdd/mocking.md, line 51fetch: (endpoint, options) => fetch(endpoint, options),

Downloads and installs other software

The author does not mention this.

Found in 2 places.

.agents/skills/tdd/references/upstream.md, line 19- **Install via Skills CLI:** `npx skills add mattpocock/skills -y`
.agents/skills/tdd/references/upstream.md, line 231. `npx skills add mattpocock/skills -y` updates `.agents/skills/*` and `skills-lock.json`.

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'tdd' ] || [ -L ~/.agents/skills/'tdd' ]; then echo 'A skill folder named tdd already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/Asymmetric-al/core' "$d" && git -C "$d" checkout --quiet '9a2e00fcb932035143b81aafc7bf95f13da923f4' -- '.agents/skills/tdd' && mkdir -p ~/.agents/skills && cp -R "$d"/'.agents/skills/tdd' ~/.agents/skills/'tdd' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'tdd' ~/.claude/skills/'tdd' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

Badge for your README

The badge for Asymmetric-al/core shows the score of its lowest-scoring skill.

SkillTrust badge for Asymmetric-al/core

[![SkillTrust](https://zalavijaysinh.github.io/skilltrust/badges/Asymmetric-al/core.svg)](https://zalavijaysinh.github.io/skilltrust/repos/Asymmetric-al/core/)

Score history

Date	Version	Score
2026-11-13	`9a2e00f`	80
2026-11-09	`f7e94db`	100
2026-11-07	`bfde43a`	100

Also found in

Identical copies of this skill exist at:

Asymmetric-al/core/.claude/skills/tdd
Asymmetric-al/core/.cursor/skills/tdd
Asymmetric-al/core/docs/ai/skills/tdd