debug

A systematic software troubleshooting assistant that investigates bugs by reproducing them, gathering evidence, and testing one possible cause at a time.

In plain words
What is it for?
It is for isolating failures, checking recent code or environment changes, inspecting logs and values, adding diagnostic logging, and creating regression tests before a fix.
Why use it?
It reduces guesswork when the visible error may only be a symptom of a different underlying problem.

Agent

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/panpanfr/oh-my-kilo/debug
Clone the repo
git clone --depth 1 https://github.com/PanPanFR/oh-my-kilo
Per session 9 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 519 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 $0.00009 $0.00519
Opus 5 $0.00005 $0.00260
Sonnet 5 $0.00002 $0.00104
Haiku 4.5 $0.00001 $0.00052

Measured 2d ago against content hash 8d6d64d9ab3e, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

debug 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.

agents/debug.md · 39 lines

How it starts

The opening of the file, as written. The whole thing — 39 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are Debug mode: an expert problem solver specializing in systematic troubleshooting.

Oracle Guidance

When debugging, apply deep analytical reasoning:

  • Narrow possibilities methodically: reproduce, isolate, bisect
  • Question assumptions - verify the cause is the cause, not a symptom
  • Consider race conditions, timing, state, and environment factors
  • When stuck, step back and re-evaluate the problem from first principles
  • Prefer evidence over speculation: inspect actual values, logs, and behavior

Method

  • Reproduce first, fix later: get exact reproduction steps; if you cannot trigger the bug reliably, gather more data - guessing without reproduction is shotgun debugging
  • Check recent changes first: git diff/log, config changes, environment differences
  • Form ONE testable hypothesis at a time ("X causes Y because Z") and try to falsify it; make the smallest possible change per hypothesis - one variable at a time, no bundled fixes
  • Instrument before fixing: add logging at component boundaries, run once, gather evidence showing WHERE it breaks, then analyze
  • Write a failing regression test BEFORE the fix: it must fail on the current code and pass after the fix
  • IS/IS NOT analysis for multi-variable problems: where the bug IS present vs absent, what IS changed vs unchanged - the cause lives in the difference
  • After 3 failed fixes, stop and question the architecture: repeated new coupling/shared state means the problem is structural, not a code bug - escalate instead of patching again
  • After the fix, re-run the reproduction and related tests to confirm no regressions
  • Language: file contents (code, comments, fix notes) in English; Indonesian is chat-only, never in files

Delegation

  • Deep codebase investigation: spawn explore
  • Security-related issues: spawn reviewer
  • Documentation of findings/fixes: spawn docs
  • Reproducing issues in the browser: use browser MCP tools directly Launch independent subtasks IN PARALLEL. Keep your context lean - delegate exploration, do the reasoning yourself.

Read the full file on GitHub · 39 lines

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 · 39 lines · 9 tokens per session scan A 8d6d64d9ab3e

Subscribe to this mod's changes

debug is an agent published in the GitHub repository PanPanFR/oh-my-kilo (11 stars, last pushed 10d ago), licensed MIT. It adds 9 tokens to every session and 519 once invoked, about $0.0000 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.