bug-analyzer

bug-analyzer is a skill for Claude Code, Codex from event4u-app/agent-config. It costs 39 tokens per session (3,139 once invoked), scanned A, original, MIT.

A code-investigation aid for finding the likely root cause of a software bug or error.

In plain words
What is it for?
Use it to investigate reported errors, analyse stack traces and reproduction steps, or proactively look for hidden bugs, edge cases, and risky code patterns.
Why use it?
It brings together evidence from sources such as Sentry, an error-monitoring service, Jira tickets, branches, error messages, and user reports so the investigation is less guesswork.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/event4u-app/agent-config/bug-analyzer
Any agent
npx skills add event4u-app/agent-config --skill bug-analyzer
Clone the repo
git clone --depth 1 https://github.com/event4u-app/agent-config

Made for: Claude Code, Codex.

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 bug-analyzer

README.md
[![agentmods](https://agentmods.dev/badge/skills/event4u-app/agent-config/bug-analyzer.svg)](https://agentmods.dev/skills/event4u-app/agent-config/bug-analyzer)
Your own site
<a href="https://agentmods.dev/skills/event4u-app/agent-config/bug-analyzer"><img src="https://agentmods.dev/badge/skills/event4u-app/agent-config/bug-analyzer.svg" alt="Measured on agentmods" height="20"></a>
Per session 39 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,139 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
Origin original No closer match found 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 $0.00039 $0.03139
Opus 5 $0.00019 $0.01570
Sonnet 5 $0.00008 $0.00628
Haiku 4.5 $0.00004 $0.00314

Measured 4d ago against content hash 4e17803a44f5, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

bug-analyzer 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 4d 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.

- **Backend bug**: reproduce with `curl` against the failing route (or an `actingAs()` HTTP test) before and after the fix; assert the new response shape with `assertJsonPath`.
src/skills/bug-analyzer/SKILL.md · 306 lines

How it starts

The opening of the file, as written. The whole thing — 306 lines — stays where its author put it; the contents beside it link to each section on GitHub.

bug-analyzer

When to use

Reactive mode: User reports a bug, shares a Sentry issue, or asks to investigate an error. Proactive mode: User asks to audit code for hidden bugs, edge cases, or risky patterns.

Do NOT use when:

Input sources

Bugs can come from multiple sources — gather as many as available:

Source What it provides
Branch name Auto-detected ticket ID (e.g., fix/DEV-1234/...)
Jira ticket Description, acceptance criteria, comments, priority
Sentry issue URL Stacktrace, affected users/environments, frequency, tags
Sentry event ID Specific occurrence with full context
Error message String to search in codebase
User description Reproduction steps, expected vs. actual behavior

Branch ticket detection

Always check the current branch for ticket IDs:

git branch --show-current

Pattern matching:

  • fix/DEV-1234/description → extract DEV-1234
  • fix/PROJ-567-some-bug → extract PROJ-567
  • hotfix/DEV-999 → extract DEV-999
  • Regex: [A-Z]+-[0-9]+

If found, auto-fetch the ticket and confirm with the user.

The Iron Law

NO FIXES WITHOUT ROOT CAUSE INVESTIGATION FIRST

If you haven't completed Phase 1, you cannot propose fixes. Random fixes waste time and create new bugs. Quick patches mask underlying issues.

Red flags — STOP immediately

Read the full file on GitHub · 306 lines

Files

What ships with it

2 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.

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. 4d ago First seen · 306 lines · 39 tokens per session scan A 4e17803a44f5

Subscribe to this mod's changes

bug-analyzer is a skill published in the GitHub repository event4u-app/agent-config (10 stars, last pushed today), licensed MIT. It adds 39 tokens to every session and 3,139 once invoked, about $0.0002 per session on Opus 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 2026-08-31.

Related

Other skills, from other repositories

save-progress

Save current project task progress to local task state file for cross-session continuity. Use when the user asks to save progress, uses an equivalent localized trigger phrase, the session is interrupted, or the user wants to resume work later. Writes to .claude/project-task-state.json so next session can load it via…

KimYx0207/Meta_Kim · 65 tokens

meta-theory

MetaKim executable governance dispatcher. It classifies the run, loads only needed references, preserves foundational capabilities and runtime-native abilities, routes owner + weapon + dependency + runtime + OS + verification, and closes only with evidence, intent acceptance, and writeback decision.

KimYx0207/Meta_Kim · 57 tokens

same-set-reusable-flow-for-project-file-inventor

Reusable MetaKim file inventory classification flow. It helps separate durable sources, generated evidence, runtime mirrors, temporary state, and risky unknowns before cleanup or commit.

KimYx0207/Meta_Kim · 45 tokens

starreel-drama-production

Operating skill for any AI agent driving the StarReel short-drama production pipeline (script → rewrite → extract → portraits + sheets → storyboards → frames → video → voiceover → final cut) over MCP or REST. Covers the ordered workflow, the entry-point decision table (which channel each kind of customer material…

waydaxp/starreel-mcp · 102 tokens

seedance-20

Generate and direct cinematic AI videos with Seedance 2.0 (ByteDance/Dreamina/Jimeng). Covers text-to-video, image-to-video, video-to-video, and reference-to-video workflows with @Tag asset references, multi-character scenes, audio design, and post-processing. Use when making AI video, writing Seedance prompts…

Kingdaddy007/my-os · 96 tokens

browse-and-evaluate

Use when exploring the ai-agent-skills catalog to find, compare, and evaluate skills before installing. Always use --fields to limit output size and --dry-run before committing to an install.

MoizIbnYousaf/Ai-Agent-Skills · 43 tokens