Test-Driven Development per WORKFLOW.md §16 — red-green-refactor as deterministic LLM guardrail.

Custom licenceAuto-check passedTesting & QA

Install Ad TDD

skills CLI
$ npx skills add alexandremendoncaalvaro/CorridorKey-Runtime --skill ad-tdd -a claude-code

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

GitHub CLI
$ gh skill install alexandremendoncaalvaro/CorridorKey-Runtime ad-tdd --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/alexandremendoncaalvaro/CorridorKey-Runtime.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/ad-tdd .claude/skills/ad-tdd && 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
ad-tdd
GitHub stars
756
Used in
1 other repo
Token cost
~2.1k tokens
SKILL.md length
1,063 words
Files
2
Skills in repo
26
Repo updated
First seen
Licence
Custom licence

At a glance

Test-Driven Development per WORKFLOW.md §16 — red-green-refactor as deterministic LLM guardrail.

  • Red-green-refactor
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Write a failing test
  • Behavior not implementation

What it does

Ad TDD is an agent skill from alexandremendoncaalvaro/CorridorKey-Runtime. Test-Driven Development per WORKFLOW.md §16 — red-green-refactor as deterministic LLM guardrail. Five phases — confirm regime, plan vertically, tracer bullet (one test → red → minimum code → green), incremental loop, refactor while green. Tests verify behavior through public interfaces; horizontal slicing (bulk-write tests then bulk-write code) is rejected as the named anti-pattern. Triggers on "TDD", "test-driven", "red-green-refactor", "test first", "write a failing test", "tracer bullet", "behavior not…

Its SKILL.md is about 2.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `agents/openai.yaml`).

It sits in Testing & QA, covering Test-driven development. The repository describes itself as: Native AI keying runtime and OFX plugin for DaVinci Resolve, built in collaboration with Corridor Digital.

When your agent uses it

  • Red-green-refactor
  • Write a failing test
  • Behavior not implementation
  • Vertical slice tests

Example prompts

  • “test-driven”
  • “red-green-refactor”
  • “test first”
  • “/ad-tdd”

What it can do on your machine

Read from SKILL.md and the folder at commit e632fa5. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    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

Ad TDD loads about 2.1k tokens when it runs. Until then it costs about 224 tokens; SKILL.md has 1,063 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~224
When it runs · the whole SKILL.md, loaded when a task matches
~2.1k

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 passed

The automated check found no risky patterns in SKILL.md.

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

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 1,063 words (~2,127 tokens).

“Implements WORKFLOW.md §16 end-to-end. The skill is for the implementation phase when the change's behavior is known and expressible as a test up front. No file is written. The output of the skill is the verified implementation that lands in…”

— opening of SKILL.md by alexandremendoncaalvaro, Custom licence
name
ad-tdd
summary
Test-Driven Development per WORKFLOW §16. Red-green-refactor as deterministic LLM guardrail. Five phases — confirm regime, plan, tracer bullet, incremental…

Read the full SKILL.md on GitHub

Files

SKILL.md and 1 other file in .agents/skills/ad-tdd of alexandremendoncaalvaro/CorridorKey-Runtime.

  • SKILL.md
  • agents/openai.yaml

Open the folder on GitHubat commit e632fa5

Used in 1 other repository

We found 2 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in alexandremendoncaalvaro/CorridorKey-Runtime, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Ad TDD 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.

Ad TDD compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Ad TDD this skillalexandremendoncaalvaro/CorridorKey-Runtime7561 repos~2.1kAutomated safety check: PassCustom licence
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/farm5.6k52 repos~2.5kAutomated safety check: PassMIT
Tapd Story PipelineTencentBlueKing/bk-bcs840—~2.6kAutomated safety check: PassCustom licence

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More from alexandremendoncaalvaro/CorridorKey-Runtime

All 26 skills in this repo
  • Ad Archive

    alexandremendoncaalvaro/CorridorKey-Runtime

    Sweep completed plan files (tasks Status:done, specs Status:shipped, PRDs Status:superseded, ADRs Status:superseded or deprecated) out of the working tree and into git history via git rm.

    756 GitHub starsUsed in 1 repo~1.6k tokens
    Auto-check passed
  • Ad Commit

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    Atomic Conventional Commits with DCO Signed-off-by sign-off.

    756 GitHub starsUsed in 1 repo~1.4k tokens
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  • Ad Bootstrap

    alexandremendoncaalvaro/CorridorKey-Runtime

    Generate AGENTS.md at the repo root by scanning the codebase first, pre-filling placeholders from observed signals, and asking only the genuine gaps.

    756 GitHub starsUsed in 1 repo~2.2k tokens
    Auto-check: warnings
  • Ad Deepen

    alexandremendoncaalvaro/CorridorKey-Runtime

    Surface deepening opportunities in the codebase using the Ousterhout/Feathers vocabulary from WORKFLOW §8 (Module / Interface / Depth / Seam / Adapter / Leverage / Locality).

    756 GitHub starsUsed in 1 repo~2k tokens
    Auto-check passed
  • Ad Domain

    alexandremendoncaalvaro/CorridorKey-Runtime

    Lazily create or update CONTEXT.md (Layer 2 — ubiquitous language per Evans 2003) at the repo root, or CONTEXT-MAP.md plus per-context CONTEXT.md for multi-context repos.

    756 GitHub starsUsed in 1 repo~1.8k tokens
    Auto-check passed
  • Ad Grill Me

    alexandremendoncaalvaro/CorridorKey-Runtime

    Interview-before-research grilling session that challenges a fuzzy ask against the existing codebase, sharpens vocabulary against CONTEXT.md, and resolves the decision tree branch by branch.

    756 GitHub starsUsed in 1 repo~1.8k tokens
    Auto-check passed

Categories

Questions about Ad TDD

What does Ad TDD do?

Test-Driven Development per WORKFLOW.md §16 — red-green-refactor as deterministic LLM guardrail. Ad TDD is an agent skill from alexandremendoncaalvaro/CorridorKey-Runtime.md §16 — red-green-refactor as deterministic LLM guardrail.

When should I use Ad TDD?

Ad TDD fits situations like: red-green-refactor; write a failing test; behavior not implementation; vertical slice tests.

How do I install Ad TDD in Claude Code?

Run `npx skills add alexandremendoncaalvaro/CorridorKey-Runtime --skill ad-tdd -a claude-code`. Or copy the skill folder (.agents/skills/ad-tdd in alexandremendoncaalvaro/CorridorKey-Runtime) into .claude/skills/ad-tdd in your project. Claude Code loads it when a task matches its description.

How do I install Ad TDD in Codex?

Run `npx skills add alexandremendoncaalvaro/CorridorKey-Runtime --skill ad-tdd -a codex`. Or copy the skill folder (.agents/skills/ad-tdd in alexandremendoncaalvaro/CorridorKey-Runtime) into .agents/skills/ad-tdd in your project. Codex loads it when a task matches its description.

Can I use Ad TDD 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 alexandremendoncaalvaro/CorridorKey-Runtime --skill ad-tdd -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/ad-tdd, .gemini/skills/ad-tdd, .github/skills/ad-tdd and .opencode/skills/ad-tdd in your project.

What does Ad TDD need to run?

SKILL.md names no scripts, command-line tools or credentials: Ad TDD is instructions for the agent only.

Does Ad TDD 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 Ad TDD safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Ad TDD use?

Ad TDD has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Ad TDD use?

About 2.1k tokens (SKILL.md is roughly 8.5k 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 Ad TDD?

Skills that share tags, products or a category with Ad TDD: 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 Ad TDD?

alexandremendoncaalvaro (a GitHub user) maintains it in alexandremendoncaalvaro/CorridorKey-Runtime, which has 756 GitHub stars. The repository holds 26 skills in this directory. The repository was last updated on August 5, 2026.

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