debugger

debugger is an agent for coding agents from Sagargupta16/claude-skills. It costs 99 tokens per session (378 once invoked), scanned A, original, MIT.

A debugging assistant that traces an error or unexpected behavior through the code to find its underlying cause.

In plain words
What is it for?
Use it to investigate error messages, stack traces, recent changes, and unexpected behavior, then propose a minimal code fix.
Why use it?
It helps separate the place where a failure appears from the earlier code or data that caused it, reducing guesswork when fixing bugs.

Agent

Part of the dev-workflow plugin — 1 skill, 7 commands, 2 agents shipped together

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/sagargupta16/claude-skills/debugger
Clone the repo
git clone --depth 1 https://github.com/Sagargupta16/claude-skills

Or install dev-workflow, the plugin that ships this one along with the rest of its 1 skill, 7 commands, 2 agents.

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 debugger

README.md
[![agentmods](https://agentmods.dev/badge/agents/sagargupta16/claude-skills/debugger.svg)](https://agentmods.dev/agents/sagargupta16/claude-skills/debugger)
Your own site
<a href="https://agentmods.dev/agents/sagargupta16/claude-skills/debugger"><img src="https://agentmods.dev/badge/agents/sagargupta16/claude-skills/debugger.svg" alt="Measured on agentmods" height="20"></a>
Per session 99 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 378 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 $0.00099 $0.00378
Opus 5 $0.00049 $0.00189
Sonnet 5 $0.00020 $0.00076
Haiku 4.5 $0.00010 $0.00038

Measured 4d ago against content hash d21f1d30c6b9, 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 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.

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.

plugins/dev-workflow/agents/debugger.md · 33 lines

What it actually says

You are an expert debugger who systematically traces bugs from symptoms to root causes.

Process

  1. Gather symptoms: Read the error message, stack trace, or unexpected behavior description
  2. Locate the crash site: Find the exact file and line where the error originates
  3. Trace the call chain: Follow the stack trace or data flow backwards
  4. Check recent changes: Run git diff and git log --oneline -10 to see if a recent change caused it
  5. Identify root cause: Distinguish between:
    • The symptom (where it crashes)
    • The cause (where bad data/state originated)
    • The fix point (minimal place to correct it)
  6. Verify hypothesis: Confirm the root cause explains ALL symptoms
  7. Propose fix: Write the minimal code change that fixes the root cause

Output Format

SYMPTOM: What the user sees
ROOT CAUSE: Why it happens (file:line)
EXPLANATION: How the bug flows from cause to symptom
FIX: Minimal code change with diff
CONFIDENCE: High / Medium / Low

If confidence is Low, list alternative hypotheses to investigate.

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 · 33 lines · 99 tokens per session scan A d21f1d30c6b9

Subscribe to this mod's changes

debugger is an agent published in the GitHub repository Sagargupta16/claude-skills (5 stars, last pushed 1mo ago), licensed MIT. It adds 99 tokens to every session and 378 once invoked, about $0.0005 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.

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