Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add ronmkr/PromptBook --skill tdd-workflowgit clone --depth 1 https://github.com/ronmkr/PromptBookWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/ronmkr/promptbook/tdd-workflow)<a href="https://agentmods.dev/skills/ronmkr/promptbook/tdd-workflow"><img src="https://agentmods.dev/badge/skills/ronmkr/promptbook/tdd-workflow/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/ronmkr/promptbook/tdd-workflow"><img src="https://agentmods.dev/badge/skills/ronmkr/promptbook/tdd-workflow.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00043 | $0.03076 |
| Opus 5 | $0.00022 | $0.01538 |
| Sonnet 5 | $0.00009 | $0.00615 |
| Haiku 4.5 | $0.00004 | $0.00308 |
Grade A, and why
tdd-workflow scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
This is a copy
97% identical to tdd-workflow — 2 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 464 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Test-Driven Development Workflow
This skill ensures all code development follows TDD principles with comprehensive test coverage.
When to Activate
- Writing new features or functionality
- Fixing bugs or issues
- Refactoring existing code
- Adding API endpoints
- Creating new components
Core Principles
1. Tests BEFORE Code
ALWAYS write tests first, then implement code to make tests pass.
2. Coverage Requirements
- Minimum 80% coverage (unit + integration + E2E)
- All edge cases covered
- Error scenarios tested
- Boundary conditions verified
3. Test Types
Unit Tests
- Individual functions and utilities
- Component logic
- Pure functions
- Helpers and utilities
Integration Tests
- API endpoints
- Database operations
- Service interactions
- External API calls
E2E Tests (Playwright)
- Critical user flows
- Complete workflows
- Browser automation
- UI interactions
4. Git Checkpoints
- If the repository is under Git, create a checkpoint commit after each TDD stage
- Do not squash or rewrite these checkpoint commits until the workflow is complete
- Each checkpoint commit message must describe the stage and the exact evidence captured
- Count only commits created on the current active branch for the current task
- Do not treat commits from other branches, earlier unrelated work, or distant branch history as valid checkpoint evidence
- Before treating a checkpoint as satisfied, verify that the commit is reachable from the current
HEADon the active branch and belongs to the current task sequence - The preferred compact workflow is:
- one commit for failing test added and RED validated
- one commit for minimal fix applied and GREEN validated
- one optional commit for refactor complete
- Separate evidence-only commits are not required if the test commit clearly corresponds to RED and the fix commit clearly corresponds to GREEN
TDD Workflow Steps
Step 1: Write User Journeys
As a [role], I want to [action], so that [benefit]
Example:
As a user, I want to search for markets semantically,
so that I can find relevant markets even without exact keywords.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 6d ago First seen · 464 lines · 43 tokens per session scan A ff05798e2fa0
tdd-workflow is a skill published in the GitHub repository ronmkr/PromptBook (2 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 43 tokens to every session and 3,076 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 97% identical to tdd-workflow, differing in 2 lines, and is treated as a copy.
Other skills, from other repositories
tdd
Test-driven development with red-green-refactor loop. Use when user wants to build features or fix bugs using TDD, mentions "red-green-refactor", wants integration tests, or asks for test-first development.
knowledge-engineering-quality-and-delivery-real-api-qualification-and-e2e
A guide to tests that call real AI providers and verify complete user flows across the CLI, web interface, terminals, and ACP hosts.
knowledge-engineering-quality-and-delivery-unit-integration-and-shared-test-harnesses
A testing guide for the CLI and web interfaces, covering unit, integration, end-to-end, and real-process test setup with shared fixtures and cleanup.
go
Go phase. Reads the approved SPEC file, maps Requirements to tasks (plan), executes via TDD (build), and integrates results verifying all Acceptance Criteria.
tdd
Test-Driven Development enforcer. Red→Green→Refactor cycle with no production code without a failing test first. Use for new features and bug fixes.
webapp-testing
Browser-based UI verification using Playwright. Page Object Model, selector best practices, visual regression, network interception, and MCP integration. Trigger: When writing E2E tests, verifying UI changes, or setting up Playwright.