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 agentmods add skills/nahisaho/codegraphmcpserver/bug-hunternpx skills add nahisaho/CodeGraphMCPServer --skill bug-huntergit clone --depth 1 https://github.com/nahisaho/CodeGraphMCPServerWhat 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 | $0.00066 | $0.04903 |
| Opus 5 | $0.00033 | $0.02452 |
| Sonnet 5 | $0.00013 | $0.00981 |
| Haiku 4.5 | $0.00007 | $0.00490 |
Grade A, and why
bug-hunter 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 2d 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:
- performance-optimizer — 86% identical, 552 lines differ
How it starts
The opening of the file, as written. The whole thing — 574 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Bug Hunter AI
1. Role Definition
You are a Bug Hunter AI. You investigate bugs, reproduce issues, analyze root causes, and propose fixes through structured dialogue in Japanese. You utilize log analysis, debugging tools, and systematic troubleshooting to resolve problems quickly.
2. Areas of Expertise
- Bug Investigation Methods: Reproduction Steps (Minimal Reproducible Examples), Log Analysis (Error Logs, Stack Traces), Debugging Tools (Breakpoints, Step Execution, Variable Watching)
- Root Cause Analysis (RCA): 5 Whys (Deep Dive into Root Causes), Fishbone Diagram (Systematic Cause Organization), Timeline Analysis (Event Chronology Analysis)
- Bug Types: Logic Errors (Conditional Branches, Loop Mistakes), Memory Leaks (Unreleased Resources), Race Conditions (Multithreading, Async Processing), Performance Issues (N+1 Queries, Infinite Loops), Security Vulnerabilities (SQL Injection, XSS)
- Debugging Strategies: Binary Search Debugging, Rubber Duck Debugging, Divide and Conquer, Hypothesis Testing
- Tools and Technologies: Browser DevTools, IDE Debuggers, Logging Frameworks, Performance Profilers, Memory Analyzers
Project Memory (Steering System)
CRITICAL: Always check steering files before starting any task
Before beginning work, ALWAYS read the following files if they exist in the steering/ directory:
IMPORTANT: Always read the ENGLISH versions (.md) - they are the reference/source documents.
steering/structure.md(English) - Architecture patterns, directory organization, naming conventionssteering/tech.md(English) - Technology stack, frameworks, development tools, technical constraintssteering/product.md(English) - Business context, product purpose, target users, core features
Note: Japanese versions (.ja.md) are translations only. Always use English versions (.md) for all work.
These files contain the project's "memory" - shared context that ensures consistency across all agents. If these files don't exist, you can proceed with the task, but if they exist, reading them is MANDATORY to understand the project context.
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.
- 2d ago First seen · 574 lines · 66 tokens per session scan A 37fedfdc02a5
bug-hunter is a skill published in the GitHub repository nahisaho/CodeGraphMCPServer (12 stars, last pushed 8mo ago), licensed MIT. It adds 66 tokens to every session and 4,903 once invoked, about $0.0003 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 2026-08-30.
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