A development workflow based on written specifications and quality checks. TDD, or test-driven development, means writing tests around expected behavior as part of the development process.

Use it to guide spec-based implementation, apply verification steps, and check that the delivered code matches the requested behavior.

It helps turn a broad request into explicit requirements and checks, reducing the chance that code is accepted without proving it meets them.

specwright — Plugin for Claude Code by Obsidian-Owl

Install

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.

Clone the repo

git clone --depth 1 https://github.com/Obsidian-Owl/specwright

Made for: Claude Code.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/plugins/obsidian-owl/specwright/claude-code/github.svg)](https://agentmods.dev/plugins/obsidian-owl/specwright/claude-code)

Your own site

<a href="https://agentmods.dev/plugins/obsidian-owl/specwright/claude-code"><img src="https://agentmods.dev/badge/plugins/obsidian-owl/specwright/claude-code/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.

Your own site · 80×15

<a href="https://agentmods.dev/plugins/obsidian-owl/specwright/claude-code"><img src="https://agentmods.dev/badge/plugins/obsidian-owl/specwright/claude-code.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session not measured What this adds to a session before it is invoked.

When invoked not measured Not applicable: nothing here is loaded into a session.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

specwright 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 1mo 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.

adapters/claude-code/.claude-plugin/plugin.json · 21 lines

What it actually says

{
  "name": "specwright",
  "version": "0.32.0",
  "description": "Spec-driven development with quality gates. Ensures you get what you asked for.",
  "author": {
    "name": "ObsidianOwl",
    "url": "https://github.com/Obsidian-Owl"
  },
  "homepage": "https://github.com/Obsidian-Owl/specwright",
  "repository": "https://github.com/Obsidian-Owl/specwright",
  "license": "MIT",
  "keywords": [
    "spec-driven",
    "quality-gates",
    "tdd",
    "workflow",
    "verification"
  ],
  "skills": "./skills/"
}

Contents

What it installs

The manifest is a name and a version. 6 hooks travel with it, and installing the plugin installs all of them. Each is measured on its own page, and each can be installed alone.

Files

What ships with it

1 file beside plugin.json in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

marketplace.json 743 B

Changes

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.

1mo ago First seen · 21 lines scan A c780380a81a0

Subscribe to this mod's changes

specwright is a plugin published in the GitHub repository Obsidian-Owl/specwright (10 stars, last pushed 5mo ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Claude Code Planning TDD Testing ai-agents ai-development claude-code-plugin cli-plugin code-quality

atdd

Acceptance Test Driven Development for Claude Code. Enforces the ATDD methodology: write Given/When/Then specs first, generate a project-specific test pipeline, maintain two test streams (acceptance + unit). Inspired by Robert C. Martin's acceptance test approach from empire-2025.

swingerman/engineer · not measured

shipyard

Ship software systematically: project lifecycle, TDD, parallel agents, code review, security auditing, and infrastructure validation.

lgbarn/shipyard · not measured

beast-forge

Plan iron, verify real. Ironclad planning with independent verification chain. Turns any input into a bulletproof plan, executes with TDD, verifies with independent agents.

malakhov-dmitrii/forge · not measured

f5-framework

F5 Framework - AI-powered development framework with quality gates, TDD support, and enterprise-grade tooling for Claude Code.

Fujigo-Software/f5-framework-claude · not measured

f5-core

F5 Framework Core - AI-assisted development with quality gates, TDD support, and workflow optimization.