test-driven-development

test-driven-development is a skill in GanyuanRan/Aegis, last changed 10 Oct 2026. It can run shell commands. Our pattern check flagged nothing at commit 0461c21 on 27 Oct 2026.

Pattern check: nothing flagged · commit 0461c21 · 27 Oct 2026

Install

From the author

Use when the user explicitly requests strict or test-first TDD, or when the current conversation already contains an explicit `TDD Route: strict` decision from another Aegis workflow.

Licence: MIT
Repo stars: 1.4k
Folder last changed: 10 Oct 2026 (opens in a new tab)
Publisher: GanyuanRan
Files: 1 file
Checked: 0461c21 (opens in a new tab) · 27 Oct 2026

Install

Each tab says whether it installs commit 0461c21, the one we checked, or the latest version.

No tab for your agent? Use Any agent for OpenCode, Goose, Windsurf (Devin Desktop), Zed, Roo Code, Factory Droid, Junie, Amp and Antigravity, and Claude Code for Cline. Kiro needs the folder copied by hand.

Pinned to commit 0461c21, the one we checked.

From your project's root folder:

tmp="$(mktemp -d)" &&
  git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/GanyuanRan/Aegis.git "$tmp" &&
  git -C "$tmp" fetch -q --depth 1 origin 0461c211e4d812f0b215fab240a68a25c1e22424 &&
  git -C "$tmp" sparse-checkout set -- skills/test-driven-development &&
  git -C "$tmp" checkout -q 0461c211e4d812f0b215fab240a68a25c1e22424 &&
  mkdir -p .claude/skills &&
  mkdir .claude/skills/test-driven-development &&
  cp -R "$tmp"/skills/test-driven-development/. .claude/skills/test-driven-development/ &&
  rm -rf "$tmp"

If Claude Code was already running and this created the skills folder, run /reload-skills.

Or install the aegis plugin it ships in. Installs the latest version, not the one we checked. Installs everything in the plugin, including any hooks, MCP servers and scripts our check doesn't cover.

claude plugin marketplace add GanyuanRan/Aegis --scope project &&
  claude plugin install aegis@aegis-dev --scope project

Claude Code docs

Pinned to commit 0461c21, the one we checked.

Skills in the Claude apps belong to your account rather than to a project.

Make test-driven-development.zip, with the skill folder at the top level:

tmp="$(mktemp -d)" &&
  git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/GanyuanRan/Aegis.git "$tmp" &&
  git -C "$tmp" fetch -q --depth 1 origin 0461c211e4d812f0b215fab240a68a25c1e22424 &&
  git -C "$tmp" sparse-checkout set -- skills/test-driven-development &&
  git -C "$tmp" checkout -q 0461c211e4d812f0b215fab240a68a25c1e22424 &&
  out="$(mktemp -d)" &&
  cp -R "$tmp"/skills/test-driven-development "$out"/test-driven-development &&
  (cd "$out" && zip -qr - test-driven-development) > test-driven-development.zip &&
  rm -rf "$tmp" "$out"

In Claude, open Customize > Skills, select +, then + Create skill > Upload a skill, and choose test-driven-development.zip.

On Free, Pro and Max plans, turn on Code execution and file creation (Create and edit files in newer settings) under Settings > Capabilities.

Claude apps docs

Pinned to commit 0461c21, the one we checked.

From your project's root folder:

tmp="$(mktemp -d)" &&
  git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/GanyuanRan/Aegis.git "$tmp" &&
  git -C "$tmp" fetch -q --depth 1 origin 0461c211e4d812f0b215fab240a68a25c1e22424 &&
  git -C "$tmp" sparse-checkout set -- skills/test-driven-development &&
  git -C "$tmp" checkout -q 0461c211e4d812f0b215fab240a68a25c1e22424 &&
  mkdir -p .agents/skills &&
  mkdir .agents/skills/test-driven-development &&
  cp -R "$tmp"/skills/test-driven-development/. .agents/skills/test-driven-development/ &&
  rm -rf "$tmp"

Codex picks up new skills on its own; restart it if this one does not appear.

Codex docs

Pinned to commit 0461c21, the one we checked.

From your project's root folder:

tmp="$(mktemp -d)" &&
  git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/GanyuanRan/Aegis.git "$tmp" &&
  git -C "$tmp" fetch -q --depth 1 origin 0461c211e4d812f0b215fab240a68a25c1e22424 &&
  git -C "$tmp" sparse-checkout set -- skills/test-driven-development &&
  git -C "$tmp" checkout -q 0461c211e4d812f0b215fab240a68a25c1e22424 &&
  mkdir -p .cursor/skills &&
  mkdir .cursor/skills/test-driven-development &&
  cp -R "$tmp"/skills/test-driven-development/. .cursor/skills/test-driven-development/ &&
  rm -rf "$tmp"

Cursor docs

Pinned to commit 0461c21, the one we checked.

From your project's root folder:

tmp="$(mktemp -d)" &&
  git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/GanyuanRan/Aegis.git "$tmp" &&
  git -C "$tmp" fetch -q --depth 1 origin 0461c211e4d812f0b215fab240a68a25c1e22424 &&
  git -C "$tmp" sparse-checkout set -- skills/test-driven-development &&
  git -C "$tmp" checkout -q 0461c211e4d812f0b215fab240a68a25c1e22424 &&
  mkdir -p .github/skills &&
  mkdir .github/skills/test-driven-development &&
  cp -R "$tmp"/skills/test-driven-development/. .github/skills/test-driven-development/ &&
  rm -rf "$tmp"

In a running Copilot CLI session, run /skills reload.

Or install it with gh skill, which also installs the commit we checked. Needs GitHub CLI 2.90 or later.

gh skill install GanyuanRan/Aegis skills/test-driven-development/SKILL.md@0461c211e4d812f0b215fab240a68a25c1e22424 --agent github-copilot --scope project

Copilot & VS Code docs

Pinned to commit 0461c21, the one we checked.

From your project's root folder:

tmp="$(mktemp -d)" &&
  git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/GanyuanRan/Aegis.git "$tmp" &&
  git -C "$tmp" fetch -q --depth 1 origin 0461c211e4d812f0b215fab240a68a25c1e22424 &&
  git -C "$tmp" sparse-checkout set -- skills/test-driven-development &&
  git -C "$tmp" checkout -q 0461c211e4d812f0b215fab240a68a25c1e22424 &&
  mkdir -p .gemini/skills &&
  mkdir .gemini/skills/test-driven-development &&
  cp -R "$tmp"/skills/test-driven-development/. .gemini/skills/test-driven-development/ &&
  rm -rf "$tmp"

In a running session, run /skills reload.

Or use Gemini CLI’s own installer. Installs the latest version, not the one we checked.

gemini skills install https://github.com/GanyuanRan/Aegis.git --path skills/test-driven-development --scope workspace

Gemini CLI docs

Pinned to commit 0461c21, the one we checked.

Codex, Cursor, Copilot, VS Code, Gemini CLI, OpenCode, Goose, Amp and Zed all read .agents/skills; Claude Code and Kiro list only their own folders.

From your project's root folder:

tmp="$(mktemp -d)" &&
  git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/GanyuanRan/Aegis.git "$tmp" &&
  git -C "$tmp" fetch -q --depth 1 origin 0461c211e4d812f0b215fab240a68a25c1e22424 &&
  git -C "$tmp" sparse-checkout set -- skills/test-driven-development &&
  git -C "$tmp" checkout -q 0461c211e4d812f0b215fab240a68a25c1e22424 &&
  mkdir -p .agents/skills &&
  mkdir .agents/skills/test-driven-development &&
  cp -R "$tmp"/skills/test-driven-development/. .agents/skills/test-driven-development/ &&
  rm -rf "$tmp"

Or use the skills CLI from skills.sh. Installs the latest version, not the one we checked. The skills CLI reports installs to skills.sh unless you set DISABLE_TELEMETRY=1.

npx skills@1.7.4 add GanyuanRan/Aegis --skill test-driven-development

Agent Skills docs

What it can touch

From the files and frontmatter at commit 0461c21. This is how much a skill can do, not whether it is risky.

What it can touch: Scripts or outside hosts

Runs shell commands
Its instructions or files give the agent commands to run on your computer.

Pattern check

Pattern check: nothing flagged · commit 0461c21 · 27 Oct 2026

We checked every text file in this skill, at commit 0461c21 on 27 Oct 2026, against 45 published patterns such as download-and-run commands, hidden text and credential access. We don't run the skill, we don't read the web pages it points to, and we can't judge everything its instructions might lead an agent to do. In published tests, pattern checks like this one missed most malicious skills. Read the skill before you install it — especially anything it asks you to download or run.

How the check works Report an incorrect finding

Format check

Each agent reads SKILL.md a little differently. We check the file against each one's published rules; we don't run the skill in any agent.

Agent Skills specPasses
The open format from agentskills.io, held to what the strictest agents enforce, so one folder loads everywhere.
- Note
  There is no license field, so readers can't tell whether they may reuse the skill. O2
  Fix: Add license: with an SPDX name such as MIT or Apache-2.0, or the name of a bundled licence file.
Claude CodePasses
Claude apps & API uploadPasses
OpenAI (Codex & API)Passes
VS Code & CopilotPasses

SKILL.md

Files

1 file

Path	Size
SKILL.md (opens in a new tab)	17.7 KB

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All skills in GanyuanRan/Aegis

Install

What it can touch

Pattern check

Format check

SKILL.md

Files

More from GanyuanRan/Aegis

anti-entropy-governance

brainstorming

communicating-concisely

dispatching-parallel-agents

establishing-project-context

executing-plans