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 morodomi/tdd-skills --skill tdd-diagnosegit clone --depth 1 https://github.com/morodomi/tdd-skillsWrote 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/morodomi/tdd-skills/tdd-diagnose)<a href="https://agentmods.dev/skills/morodomi/tdd-skills/tdd-diagnose"><img src="https://agentmods.dev/badge/skills/morodomi/tdd-skills/tdd-diagnose/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/morodomi/tdd-skills/tdd-diagnose"><img src="https://agentmods.dev/badge/skills/morodomi/tdd-skills/tdd-diagnose.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 | $0.00045 | $0.00786 |
| Opus 5 | $0.00023 | $0.00393 |
| Sonnet 5 | $0.00009 | $0.00157 |
| Haiku 4.5 | $0.00005 | $0.00079 |
Grade A, and why
tdd-diagnose 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 11d 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- diagnose — 92% identical, 21 lines differ
What it actually says
TDD Diagnose Phase
複雑なバグに対し、複数の仮説を並行調査し根本原因を特定する。
Progress Checklist
DIAGNOSE Progress:
- [ ] バグ情報収集（カテゴリ・重要度・症状）
- [ ] 仮説生成（3つ以上）
- [ ] 調査実行（モード自動選択）
- [ ] 結果統合・分岐判定
- [ ] Cycle doc更新 → tdd-plan自動実行
Workflow
Step 1: バグ情報収集
1a. AskUserQuestion で構造化入力:
- バグカテゴリ: regression / new behavior / intermittent / performance degradation
- 重要度: blocking development / blocking users / workaround exists
1b. 続けて自然言語で質問:
- 「エラーメッセージやログを貼り付けてください」
- 「関連するファイルパスがあれば教えてください」
詳細: reference.md
Step 2: 仮説生成
収集した情報から原因候補を 3つ以上 リスト:
| # | 仮説 | 調査方針 |
|---|---|---|
| H1 | [原因候補1] | [検証方法] |
| H2 | [原因候補2] | [検証方法] |
| H3 | [原因候補3] | [検証方法] |
仮説テンプレート: reference.md
Step 3: 調査実行
CLAUDE_CODE_EXPERIMENTAL_AGENT_TEAMS 環境変数でモードを選択:
| 環境変数 | モード | 手順 |
|---|---|---|
有効 (1) |
討論型 (Agent Teams) | steps-teams.md |
| 無効 / 未設定 | 並行型 (Subagent) | steps-subagent.md |
Step 4: 調査結果統合
各仮説の検証結果を集約し、分岐判定:
根本原因が特定された場合 (Identified)
→ Cycle doc に根本原因を記録、Step 5 へ
2-3候補に絞込まれた場合 (Narrowed)
→ AskUserQuestion で候補からユーザーが選択、Step 5 へ
不明・全仮説否定の場合 (Inconclusive)
調査結果が不明確です。
1. 仮説を追加して再調査（最大2回まで）
2. 手動調査へエスカレート（現時点の発見事項を記録）
再調査2回で未解決の場合、選択肢2へ強制遷移。
Step 5: Cycle doc 更新 → tdd-plan 自動実行
調査結果を Cycle doc に記録し、Skill(tdd-core:tdd-plan) を自動実行。
Reference
- 詳細: reference.md
What ships with it
3 files beside SKILL.md 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.
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.
- 11d ago First seen · 82 lines · 45 tokens per session scan A 38c8b69cc7fc
tdd-diagnose is a skill published in the GitHub repository morodomi/tdd-skills (8 stars, last pushed 7mo ago), licensed MIT. It adds 45 tokens to every session and 786 once invoked, about $0.0002 per session on Opus 5. 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.
Other skills, from other repositories
debug-optimize-lcp
Guides debugging and optimizing Largest Contentful Paint (LCP) using Chrome DevTools MCP tools. Use this skill whenever the user asks about LCP performance, slow page loads, Core Web Vitals optimization, or wants to understand why their page's main content takes too long to appear. Also use when the user mentions…
systematic-debugging
Use when debugging a failing test, build error, or runtime issue that isn't immediately obvious. Guides a 4-phase root cause analysis instead of random fix attempts.
diagnose
Trace from a reproduced symptom to the source code that causes it. Pin the specific file and approximate line, rate confidence in the cause and clarity of the fix independently, and always propose a concrete fix.
repro-admin
Reproduce an EmDash admin UI bug. Attach a container, start the demo dev server, drive the admin with agent-browser using the dev-bypass session, and capture the reproduction as screenshots plus a replayable transcript.
log-error-digest
Analyze log files to troubleshoot errors, identify peak error periods, and produce error clustering, frequency statistics, and time distribution reports. Supports JSON, syslog, and Nginx formats with automatic detection. Use when a user uploads a .log file and asks to analyze errors, find patterns, debug issues, or…
byted-util-volcengine-detect-retry
An orchestration workflow for Volcengine Cloud Detect, a service that checks websites or network endpoints from test locations.