debug-issue

debug-issue is a skill for Claude Code from thangchung/agent-engineering-experiment. It costs 13 tokens per session (248 once invoked), scanned A, a copy of debug-issue, MIT.

A code-debugging guide that maps how parts of a program connect, then traces an issue through those connections.

In plain words
What is it for?
Use it to locate related code, follow functions that call one another, inspect execution paths, check recent changes, and estimate the impact of a suspected file.
Why use it?
It helps find where a bug starts and what caused it, instead of checking files one by one. It also shows which other parts may be affected.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

Good fit Use it to locate related code, follow functions that call one another, inspect execution paths, check recent changes, and estimate the impact of a suspected file.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/thangchung/agent-engineering-experiment/debug-issue
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.

Any agent
npx skills add thangchung/agent-engineering-experiment --skill debug-issue
Clone the repo
git clone --depth 1 https://github.com/thangchung/agent-engineering-experiment

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.

agentmods badge for debug-issue

README.md
[![agentmods](https://agentmods.dev/badge/skills/thangchung/agent-engineering-experiment/debug-issue/github.svg)](https://agentmods.dev/skills/thangchung/agent-engineering-experiment/debug-issue)
Your own site
<a href="https://agentmods.dev/skills/thangchung/agent-engineering-experiment/debug-issue"><img src="https://agentmods.dev/badge/skills/thangchung/agent-engineering-experiment/debug-issue/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.

agentmods 80×15 button for debug-issue

Your own site · 80×15
<a href="https://agentmods.dev/skills/thangchung/agent-engineering-experiment/debug-issue"><img src="https://agentmods.dev/badge/skills/thangchung/agent-engineering-experiment/debug-issue.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 13 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 248 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 100% copy Near-identical to another mod in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00013 $0.00248
Opus 5.5 $0.00005 $0.00099
Sonnet 5.5 $0.00003 $0.00050
Haiku 4.5 $0.00001 $0.00025

Measured 1mo ago against content hash ed347c3ee7f7, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

debug-issue 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.

Origin

This is a copy

100% identical to debug-issue — 0 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.

agentgateway-entraid-obo/.claude/skills/debug-issue/SKILL.md · 28 lines

What it actually says

Debug Issue

Use the knowledge graph to systematically trace and debug issues.

Steps

  1. Use semantic_search_nodes_tool to find code related to the issue.
  2. Use query_graph_tool with callers_of and callees_of to trace call chains.
  3. Use get_flow to see full execution paths through suspected areas.
  4. Run detect_changes_tool to check if recent changes caused the issue.
  5. Use get_impact_radius_tool on suspected files to see what else is affected.

Tips

  • Check both callers and callees to understand the full context.
  • Look at affected flows to find the entry point that triggers the bug.
  • Recent changes are the most common source of new issues.

Token Efficiency Rules

  • ALWAYS start with get_minimal_context(task="<your task>") before any other graph tool.
  • Use detail_level="minimal" on all calls. Only escalate to "standard" when minimal is insufficient.
  • Target: complete any review/debug/refactor task in ≤5 tool calls and ≤800 total output tokens.
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.

  1. 1mo ago First seen · 28 lines · 13 tokens per session scan A ed347c3ee7f7

Subscribe to this mod's changes

debug-issue is a skill published in the GitHub repository thangchung/agent-engineering-experiment (27 stars, last pushed 5d ago), licensed MIT. It adds 13 tokens to every session and 248 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to debug-issue, differing in 0 lines, and is treated as a copy.

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