Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/sd0xdev/sd0x-harnessnpx agentmods add skills/sd0xdev/sd0x-harness/debugWrote 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/sd0xdev/sd0x-harness/debug)<a href="https://agentmods.dev/skills/sd0xdev/sd0x-harness/debug"><img src="https://agentmods.dev/badge/skills/sd0xdev/sd0x-harness/debug/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/sd0xdev/sd0x-harness/debug"><img src="https://agentmods.dev/badge/skills/sd0xdev/sd0x-harness/debug.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 2 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Agent Snooping · line 108 Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
- medium Agent Snooping · line 129 Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
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 | $0.00067 | $0.02473 |
| Opus 5.5 | $0.00027 | $0.00989 |
| Sonnet 5.5 | $0.00013 | $0.00495 |
| Haiku 4.5 | $0.00007 | $0.00247 |
Grade A, and why
debug scanned grade A with 1 finding 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 21d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
| Read-first default | 預設探測為唯讀：`cat`, `curl -s`, `grep`, `ls`, `git log` | How it starts
The opening of the file, as written. The whole thing — 243 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Debug Skill
Trigger
- Keywords: debug, 除錯, troubleshoot, diagnose, 查問題, 找 bug, 為什麼不動, 為什麼不 work, something wrong, not working
When NOT to Use
| Scenario | Alternative |
|---|---|
| GitHub Issue / PR thread 分析 | /issue-analyze |
| 已知根因、直接修復 | /bug-fix |
| 理解程式碼如何運作 | /code-explore |
| 需要雙視角確認邏輯 | /code-investigate |
| 部署後唯讀功能驗證 | /feature-verify |
Prohibited Actions
❌ git add | git commit | git push — per @rules/git-workflow.md
This skill debugs and may fix code but does not commit. /precommit is a quality gate only. To commit, offer the menu per rules/git-workflow.md § Proactive Offer — a commit option on any real branch, a push option only where review-state.js offer allows one — and invoke /smart-commit --execute on selection; never print the command for the user to copy.
Workflow
Phase 0 Phase 1 Phase 2 Phase 3 Phase 4 Phase 5
Intake → Classify → Probe Loop → Root Cause → Fix + → Report
+ Repro (Taxonomy) (max 6) Confirmation Verify
│ │ │ │ │ │
▼ ▼ ▼ ▼ ▼ ▼
Execute refs/ Bash /seek-verdict Edit+test --export
reproduce failure- /codex- /code-investigate /bug-fix (optional)
taxonomy brainstorm (optional)
Phase 0: Intake + Reproduce
| Step | Action | Output |
|---|---|---|
| 0a | 解析問題描述（症狀、範圍、環境） | 結構化問題描述 |
| 0b | 嘗試重現（執行命令/腳本） | 預期 vs 實際結果 |
| 0c | 重現成功？ | Yes → Phase 1 / No → ⚠️ Need Human |
Repro Contract: 根因聲稱必須基於可重現的觀察，不可基於靜態推測。
Phase 1: Classify
根據觀察到的失敗模式，使用 Failure Taxonomy 分類並選擇 first-probe 策略。
See references/failure-taxonomy.md for:
- 6 problem types + detection signals + first-probe commands
- Classification decision tree
- Escalation paths
Phase 2: Probe Loop
假設驅動的互動式探測迴圈。See references/probe-protocol.md for full rules.
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.
- 21d ago Changed cb562a3c47b2
- 1mo ago Changed 2509bd60da7b
- 1mo ago First seen · 243 lines · 67 tokens per session scan A ebb2bb12a3a1
debug is a skill published in the GitHub repository sd0xdev/sd0x-harness (193 stars, last pushed 9d ago), licensed MIT. It adds 67 tokens to every session and 2,473 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other skills, from other repositories
resolving-merge-conflicts
Use when a git merge or rebase reports conflicts and the operation is in progress.
debugging
Use when diagnosing a defect or regression: feedback loop FIRST, root cause before fix, blast radius after fix. Covers the 10-rung construction ladder, LSP-powered tracing, hypothesis quality criteria, and four-phase investigation.
codebase-hygiene
Two-mode skill: (1) find semantic duplicates — functions doing the same thing under different names, invisible to copy-paste detectors; (2) deepen shallow modules — thin wrappers and pass-through layers that spread complexity. Advisory and read-only; changes route through BUILD with full gates.
generator-apply-fixes
Internal Auto-Harness generator skill for QA fix cycles. Use only inside the Generator subagent when it is addressing named defects from QA or retest.
comet-hotfix
A quick workflow for fixing an existing bug in Comet, a tool that manages structured code changes. It moves through opening the change, building, checking, and archiving it.
comet-hotfix
Comet preset path: Bug fix / hotfix. Skip brainstorming, directly open → build → verify → archive. Applicable for behavior fixes, scenarios not involving new capability design.