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Agent skill

TDD Workflow

by ruvnet in ruvnet/ruflo

TDD London School workflow -- mock-first, outside-in test development

MITAuto-check passedTesting & QA

Install TDD Workflow

skills CLI
$ npx skills add ruvnet/ruflo --skill tdd-workflow -a claude-code

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

GitHub CLI
$ gh skill install ruvnet/ruflo 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/ruvnet/ruflo.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/ruflo-testgen/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
74k
Token cost
~269 tokens
SKILL.md length
93 words
Files
1
Skills in repo
264
Repo updated
First seen
Licence
MIT

At a glance

TDD London School workflow -- mock-first, outside-in test development

  • Works in 5 steps: Write the failing test first -- define… → Run the test -- confirm it fails for the… → Implement minimal code -- make the test… → …
  • Tasks that involve Test-driven development
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

TDD Workflow is an agent skill from ruvnet/ruflo. TDD London School workflow -- mock-first, outside-in test development

Its SKILL.md is about 270 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 repository describes itself as: 🌊 The original agent harness. Deploy intelligent multi-player swarms, coordinate autonomous workflows, and build conversational AI systems. Features adaptive memory…. The licence is MIT.

When your agent uses it

  • Tasks that involve Test-driven development

Example prompts

  • “/tdd-workflow”

Requirements

  • Node.js
  • Pre-approved tools (allowed-tools): Bash(npx * npm *), mcp__plugin_ruflo-core_ruflo__hooks_pre-task, mcp__plugin_ruflo-core_ruflo__hooks_post-task, Read, Write, Edit

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

  1. Write the failing test first -- define expected behavior with mocked dependencies
  2. Run the test -- confirm it fails for the right reason
  3. Implement minimal code -- make the test pass with the simplest solution
  4. Refactor -- clean up while keeping tests green
  5. Repeat -- add the next behavior

What it can do on your machine

Read from SKILL.md and the folder at commit de590e1. 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:

    • Bash(npx * npm *)
    • mcp__plugin_ruflo-core_ruflo__hooks_pre-task
    • mcp__plugin_ruflo-core_ruflo__hooks_post-task
    • Read
    • Write
    • Edit

    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 269 tokens when it runs. Until then it costs about 21 tokens; SKILL.md has 93 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
~269

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

The full file from ruvnet/ruflo at commit de590e1, republished under its MIT licence (© ruvnet). 93 words, ~269 tokens.

Download SKILL.mdSave it as .claude/skills/tdd-workflow/SKILL.md (or your agent's skills folder).
name
tdd-workflow
description
TDD London School workflow -- mock-first, outside-in test development
allowed-tools
Bash(npx * npm *), mcp__plugin_ruflo-core_ruflo__hooks_pre-task, mcp__plugin_ruflo-core_ruflo__hooks_post-task, Read, Write, Edit
argument-hint
<module-path>

Follow the TDD London School (mock-first) approach:

  1. Write the failing test first -- define expected behavior with mocked dependencies
  2. Run the test -- confirm it fails for the right reason
  3. Implement minimal code -- make the test pass with the simplest solution
  4. Refactor -- clean up while keeping tests green
  5. Repeat -- add the next behavior

Before starting: mcp__plugin_ruflo-core_ruflo__hooks_pre-task({ description: "TDD: FEATURE_NAME" }) After completing: mcp__plugin_ruflo-core_ruflo__hooks_post-task({ taskId: "tdd-FEATURE", success: true, storeResults: true })

Principles:

  • Mock external dependencies at boundaries
  • Test behavior, not implementation
  • One assertion per test when possible
  • Descriptive names: should [behavior] when [condition]

© ruvnet, 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 plugins/ruflo-testgen/skills/tdd-workflow of ruvnet/ruflo.

Open the folder on GitHubat commit de590e1

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 skillruvnet/ruflo74k—~269Automated safety check: PassMIT
TDDfossasia/eventyay-interpretation1.6k28 repos~1.1kAutomated safety check: PassApache-2.0
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/farm5.6k49 repos~2.5kAutomated safety check: PassMIT
Tapd Story PipelineTencentBlueKing/bk-bcs840—~2.6kAutomated safety check: PassCustom licence

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  • AgentDB Pattern Memory

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  • Security Audit Scanner

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  • Swarm Orchestration

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  • Ruflo Multi-Agent Orchestration

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Categories

Questions about TDD Workflow

What does TDD Workflow do?

TDD London School workflow -- mock-first, outside-in test development. TDD Workflow is an agent skill from ruvnet/ruflo.

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 ruvnet/ruflo --skill tdd-workflow -a claude-code`. Or copy the skill folder (plugins/ruflo-testgen/skills/tdd-workflow in ruvnet/ruflo) 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 ruvnet/ruflo --skill tdd-workflow -a codex`. Or copy the skill folder (plugins/ruflo-testgen/skills/tdd-workflow in ruvnet/ruflo) 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 ruvnet/ruflo --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. Our summary lists: Node.js. Its frontmatter pre-approves these tools: Bash(npx * npm *), mcp__plugin_ruflo-core_ruflo__hooks_pre-task, mcp__plugin_ruflo-core_ruflo__hooks_post-task, Read, Write, Edit.

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 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 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 269 tokens (SKILL.md is roughly 1.1k 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 (fossasia/eventyay-interpretation, 1.6k 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?

ruvnet (a GitHub user) maintains it in ruvnet/ruflo, which has 74,012 GitHub stars. The repository holds 264 skills in this directory. The repository was last updated on October 7, 2026.

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