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Agent skill

TDD Workflow

by xenitV1 in xenitV1/Antigravity-Workflows

Test-Driven Development workflow principles. An agent skill from xenitV1/Antigravity-Workflows.

MITAuto-check: notesTesting & QA

Install TDD Workflow

skills CLI
$ npx skills add xenitV1/Antigravity-Workflows --skill tdd-workflow -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install xenitV1/Antigravity-Workflows tdd-workflow --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/xenitV1/Antigravity-Workflows.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/tdd-workflow .claude/skills/tdd-workflow && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
tdd-workflow
GitHub stars
130
Used in
8 other repos
Token cost
~698 tokens
SKILL.md length
309 words
Files
1
Skills in repo
42
Repo updated
First seen
Licence
MIT

At a glance

Test-Driven Development workflow principles. An agent skill from xenitV1/Antigravity-Workflows.

  • Works in 10 steps: The TDD Cycle → The Three Laws of TDD → RED Phase Principles → …
  • Tasks that involve Test-driven development
  • SKILL.md covers 1. The TDD Cycle, 2. The Three Laws of TDD, 3. RED Phase Principles and 4. GREEN Phase Principles, plus 6 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

TDD Workflow is an agent skill from xenitV1/Antigravity-Workflows. Test-Driven Development workflow principles. RED-GREEN-REFACTOR cycle.

Its SKILL.md is about 700 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Testing & QA, covering Test-driven development. The licence is MIT.

When your agent uses it

  • Tasks that involve Test-driven development

Example prompts

  • “/tdd-workflow”

Requirements

  • Pre-approved tools (allowed-tools): Read, Write, Edit, Glob, Grep, Bash

Workflow steps

10 steps, taken from the step headings in SKILL.md.

  1. The TDD Cycle
  2. The Three Laws of TDD
  3. RED Phase Principles
  4. GREEN Phase Principles
  5. REFACTOR Phase Principles
  6. AAA Pattern
  7. When to Use TDD
  8. Test Prioritization
  9. Anti-Patterns
  10. AI-Augmented TDD

What it can do on your machine

Read from SKILL.md and the folder at commit f0a1fa7. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves these tools, so the agent can use them without asking each time:

    • Read
    • Write
    • Edit
    • Glob
    • Grep
    • Bash

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

TDD Workflow loads about 698 tokens when it runs. Until then it costs about 21 tokens; SKILL.md has 309 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~21
When it runs · the whole SKILL.md, loaded when a task matches
~698

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check: notes

The automated check noted patterns worth knowing about, such as sudo or a known installer.

  • NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
    allowed-tools: Read, Write, Edit, Glob, Grep, Bash

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from xenitV1/Antigravity-Workflows at commit f0a1fa7, republished under its MIT licence (© xenitV1). 309 words, ~698 tokens.

Download SKILL.mdSave it as .claude/skills/tdd-workflow/SKILL.md (or your agent's skills folder).
name
tdd-workflow
description
Test-Driven Development workflow principles. RED-GREEN-REFACTOR cycle.
allowed-tools
Read, Write, Edit, Glob, Grep, Bash

TDD Workflow

Write tests first, code second.

1. The TDD Cycle

🔴 RED → Write failing test
    ↓
🟢 GREEN → Write minimal code to pass
    ↓
🔵 REFACTOR → Improve code quality
    ↓
   Repeat...

2. The Three Laws of TDD

  1. Write production code only to make a failing test pass
  2. Write only enough test to demonstrate failure
  3. Write only enough code to make the test pass

3. RED Phase Principles

What to Write
FocusExample
Behavior"should add two numbers"
Edge cases"should handle empty input"
Error states"should throw for invalid data"
RED Phase Rules
  • Test must fail first
  • Test name describes expected behavior
  • One assertion per test (ideally)

4. GREEN Phase Principles

Minimum Code
PrincipleMeaning
YAGNIYou Aren't Gonna Need It
Simplest thingWrite the minimum to pass
No optimizationJust make it work
GREEN Phase Rules
  • Don't write unneeded code
  • Don't optimize yet
  • Pass the test, nothing more

5. REFACTOR Phase Principles

What to Improve
AreaAction
DuplicationExtract common code
NamingMake intent clear
StructureImprove organization
ComplexitySimplify logic
REFACTOR Rules
  • All tests must stay green
  • Small incremental changes
  • Commit after each refactor

6. AAA Pattern

Every test follows:

StepPurpose
ArrangeSet up test data
ActExecute code under test
AssertVerify expected outcome

7. When to Use TDD

ScenarioTDD Value
New featureHigh
Bug fixHigh (write test first)
Complex logicHigh
ExploratoryLow (spike, then TDD)
UI layoutLow

8. Test Prioritization

PriorityTest Type
1Happy path
2Error cases
3Edge cases
4Performance

9. Anti-Patterns

❌ Don't✅ Do
Skip the RED phaseWatch test fail first
Write tests afterWrite tests before
Over-engineer initialKeep it simple
Multiple assertsOne behavior per test
Test implementationTest behavior

10. AI-Augmented TDD

Multi-Agent Pattern
AgentRole
Agent AWrite failing tests (RED)
Agent BImplement to pass (GREEN)
Agent COptimize (REFACTOR)

Remember: The test is the specification. If you can't write a test, you don't understand the requirement.

© xenitV1, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in skills/tdd-workflow of xenitV1/Antigravity-Workflows.

Open the folder on GitHubat commit f0a1fa7

Used in 8 other repositories

We found 17 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 8 other GitHub owners. This page covers the copy in xenitV1/Antigravity-Workflows, which our catalogue first saw on October 7, 2026.

Compare with similar skills

TDD Workflow next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

TDD Workflow compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
TDD Workflow this skillxenitV1/Antigravity-Workflows1308 repos~698Automated safety check: NotesMIT
TDDpietheinstrengholt/rssmonster56430 repos~906Automated safety check: PassMIT
TDD WorkflowhellangleZ/burn-in-cceverywhere-ralph11211 repos~2.4kAutomated safety check: PassNone
TDDsanity-io/sanity6.4k20 repos~1kAutomated safety check: PassMIT
Test Driven Developmentfarm-fe/farm5.6k51 repos~2.5kAutomated safety check: PassMIT
Tapd Story PipelineTencentBlueKing/bk-bcs840—~2.6kAutomated safety check: PassCustom licence

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Categories

Questions about TDD Workflow

What does TDD Workflow do?

Test-Driven Development workflow principles. An agent skill from xenitV1/Antigravity-Workflows. TDD Workflow is an agent skill from xenitV1/Antigravity-Workflows. Test-Driven Development workflow principles.

When should I use TDD Workflow?

TDD Workflow fits situations like: tasks that involve Test-driven development.

How do I install TDD Workflow in Claude Code?

Run `npx skills add xenitV1/Antigravity-Workflows --skill tdd-workflow -a claude-code`. Or copy the skill folder (skills/tdd-workflow in xenitV1/Antigravity-Workflows) into .claude/skills/tdd-workflow in your project. Claude Code loads it when a task matches its description.

How do I install TDD Workflow in Codex?

Run `npx skills add xenitV1/Antigravity-Workflows --skill tdd-workflow -a codex`. Or copy the skill folder (skills/tdd-workflow in xenitV1/Antigravity-Workflows) into .agents/skills/tdd-workflow in your project. Codex loads it when a task matches its description.

Can I use TDD Workflow in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add xenitV1/Antigravity-Workflows --skill tdd-workflow -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/tdd-workflow, .gemini/skills/tdd-workflow, .github/skills/tdd-workflow and .opencode/skills/tdd-workflow in your project.

What does TDD Workflow need to run?

SKILL.md names no scripts, command-line tools or credentials: TDD Workflow is instructions for the agent only. Its frontmatter pre-approves these tools: Read, Write, Edit, Glob, Grep, Bash.

Does TDD Workflow access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is TDD Workflow safe to install?

Our automated static check of SKILL.md found notes only (pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.

What licence does TDD Workflow use?

TDD Workflow is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does TDD Workflow use?

About 698 tokens (SKILL.md is roughly 2.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to TDD Workflow?

Skills that share tags, products or a category with TDD Workflow: TDD (pietheinstrengholt/rssmonster, 564 stars), TDD Workflow (hellangleZ/burn-in-cceverywhere-ralph, 112 stars), TDD (sanity-io/sanity, 6.4k stars) and Test Driven Development (farm-fe/farm, 5.6k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains TDD Workflow?

xenitV1 (a GitHub user) maintains it in xenitV1/Antigravity-Workflows, which has 130 GitHub stars. The repository holds 42 skills in this directory. The repository was last updated on January 14, 2026.

Source: xenitV1/Antigravity-Workflows on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.