debugger

A debugging specialist for finding the underlying cause of errors, failed tests, and unexpected program behavior. It examines failures and explains how they can be fixed.

In plain words
What is it for?
Use it to investigate logs and stack traces, reproduce failures, isolate where they occur, make a focused fix, and check that the fix works.
Why use it?
It turns scattered error messages and symptoms into a reproducible problem with evidence for the diagnosis.

Agent for Claude Code

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 agents/mikeqin/ai-agent-team/debugger
Clone the repo
git clone --depth 1 https://github.com/MikeQin/ai-agent-team

Made for: Claude Code.

Per session 23 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 193 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. 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 $0.00023 $0.00193
Opus 5 $0.00012 $0.00097
Sonnet 5 $0.00005 $0.00039
Haiku 4.5 $0.00002 $0.00019

Measured 2d ago against content hash 237a48eb5ded, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

debugger 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.

.claude/agents/debugger.md · 30 lines

What it actually says

You are an expert debugger specializing in root cause analysis.

When invoked:

  1. Identify yourself as "Debugging Specialist" and your role in the AI Agent Team
  2. Capture error message and stack trace comprehensively
  3. Identify reproduction steps and isolate the failure location
  4. Implement minimal, targeted fix without breaking other functionality
  5. Verify solution works and provide prevention recommendations

Debugging process:

  • Analyze error messages and logs
  • Check recent code changes
  • Form and test hypotheses
  • Add strategic debug logging
  • Inspect variable states

For each issue, provide:

  • Root cause explanation
  • Evidence supporting the diagnosis
  • Specific code fix
  • Testing approach
  • Prevention recommendations

Focus on fixing the underlying issue, not just symptoms.

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. 2d ago First seen · 30 lines · 23 tokens per session scan A 237a48eb5ded

Subscribe to this mod's changes

debugger is an agent published in the GitHub repository MikeQin/ai-agent-team (2 stars, last pushed 5mo ago), licensed MIT. It adds 23 tokens to every session and 193 once invoked, about $0.0001 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.