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tdd-playbook

v1.55.0

David's universal TDD/QA Playbook — Codex packaging. Codex registers only the hooks named below (adapters/codex/hooks.json): the Claude hook manifest (hooks/hooks.json) emits output Codex rejects, so it must never be this plugin's Codex registry.

CodexClaude Code1 Skill

By David AlstonLicense: Apache-2.00 GitHub starsUpdated last week

Directory evidence

Runtimes
Codex and Claude Code
Parsed components
1 skill or MCP entry
Source updated
Sep 16, 2026
Manifest status
Canonical path parsed

The directory validates manifest shape and source location. It does not execute the plugin or provide a security endorsement. Review the indexing methodology →

Install tdd-playbook for Codex and Claude Code

Installs for the current user
codex plugin marketplace add IchenDEV/agent-plugin-mkt
codex plugin marketplace upgrade agent-plugin-marketplace
codex plugin add tdd-playbook@agent-plugin-marketplace

Paste and run these commands in a terminal with Codex. They add and refresh the PluginsMP catalog, then install this plugin.

The installer fetches third-party code from the source repository shown on this page. This directory validates manifest structure and source location, but does not perform a security audit; review the manifest, components, and source before installing.

Get the source manually
git clone https://github.com/davalst/tdd-playbook

Clone the source repository, then follow its setup instructions to add the plugin to a compatible client. The plugin root is plugins/tdd-playbook/.

Plugin files

plugins/tdd-playbook/
├── .codex-plugin/plugin.json
├── .claude-plugin/plugin.json
└── skills/tdd-playbook/SKILL.md

Included Skills1

tdd-playbookskills/tdd-playbook/SKILL.md

David's universal TDD/QA workflow — use whenever building or changing a feature, fixing a bug, writing or reviewing tests, or planning test coverage, in ANY repo. ALSO fires for ANALYSIS work — audits, code review, diagnosis/root-cause, "investigate/verify/grade X", and self-improvement loops. Covers the reviewable TDD plan, edge-case rigor, property-based + mutation testing, interface-agnostic UX journeys (web/Telegram/TUI/MCP), intent-only UX probes + agent evals (prompt/tool/model; oracle-split — deterministic gates, LLM-judge trends never gate), the Tripwire wiring check (BUILT + WIRED + ACTIVATED + EXERCISED + RUNNING), the integration surface + capability registry + wiring liveness (assembly suite, darkness doctor), dataflow liveness (flow tables, consumer parity), determinism/flaky policy, security tests, test shape, CI hygiene, the claims discipline (cite-or-refuse, exhaustive negatives, N/N), and the learning loop (process grading + planted-error calibration). Collective handle "the TDD Playbook".

Plugin manifests2

plugins/tdd-playbook/.codex-plugin/plugin.json
{
  "name": "tdd-playbook",
  "version": "1.55.0",
  "description": "David's universal TDD/QA Playbook — Codex packaging. Codex registers only the hooks named below (adapters/codex/hooks.json): the Claude hook manifest (hooks/hooks.json) emits output Codex rejects, so it must never be this plugin's Codex registry.",
  "author": {
    "name": "David Alston"
  },
  "homepage": "https://github.com/davalst/tdd-playbook",
  "license": "Apache-2.0",
  "hooks": "./adapters/codex/hooks.json"
}
plugins/tdd-playbook/.claude-plugin/plugin.json
{
  "name": "tdd-playbook",
  "description": "David's universal TDD/QA Playbook — the standing way to build, test, fix, and audit in every repo. Ships the doctrine as an auto-firing skill, plus enforcement hooks (test-weakening/Tripwire/flaky guards), scaffolding commands, and independent verification agents. Composes with each repo's own stack-specific testing conventions.",
  "version": "1.55.0",
  "author": {
    "name": "David Alston"
  },
  "homepage": "https://github.com/davalst/tdd-playbook",
  "license": "Apache-2.0"
}

For maintainers

If you maintain this plugin, link to this source-backed listing from your README so users can review its manifest and indexed components.

[tdd-playbook on Agent Plugins Marketplace](https://pluginsmp.com/plugins/tdd-playbook)