debug-fix

A bug-fixing workflow that reproduces a problem, investigates its cause, tests the fix, and prepares the code change. It also supports a fast emergency path for production failures.

In plain words
What is it for?
Use it to investigate error reports, stack traces, screenshots, or issue descriptions. The fast mode is for urgent production hotfixes and prepares a pull request, a proposed code change for review.
Why use it?
It gives debugging a defined process, reducing the risk of changing code before understanding the problem or fixing it without verification.

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/poshan0126/dotclaude/debug-fix
Any agent
npx skills add poshan0126/dotclaude --skill debug-fix
Clone the repo
git clone --depth 1 https://github.com/poshan0126/dotclaude

Made for: Claude Code, Codex.

Per session 43 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,207 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 $0.00043 $0.01207
Opus 5 $0.00022 $0.00603
Sonnet 5 $0.00009 $0.00241
Haiku 4.5 $0.00004 $0.00121

Measured 3d ago against content hash d4e4e70a3a90, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

debug-fix 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 3d 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.

- Find the simplest way to trigger the issue (a test, curl, script).
skills/debug-fix/SKILL.md · 123 lines

How it starts

The opening of the file, as written. The whole thing — 123 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Find and fix the following issue:

Problem: $ARGUMENTS

Mode

Check $ARGUMENTS for --fast. Strip it before parsing the problem description.

  • Default: careful debug-fix. Use when you have time to do this right.
  • --fast: emergency hotfix. Use when production is broken and shipping speed matters more than thoroughness. Triggers a hotfix/* branch from production, minimal-change discipline, critical-tests-only verification, and ships a [HOTFIX] PR. Before committing to fast mode, briefly confirm with the user that this is genuinely emergency-grade. If not, suggest dropping --fast.

Step 1: Understand

  • Issue number: gh issue view $ARGUMENTS (or the project's issue tracker).
  • Error or stack trace: parse it for file, line, error type, and call chain.
  • Description: identify expected vs actual.
  • URL or screenshot: examine the referenced resource.

If unclear, ask clarifying questions before proceeding.

Step 2: Hotfix branch (--fast only)

In --fast mode only:

  • Detect the production branch: git symbolic-ref refs/remotes/origin/HEAD or git remote show origin.
  • Stash uncommitted work if needed.
  • Create and switch to hotfix/<short-description> branched from production.
  • ASK the user to confirm the branch name first.

In default mode, skip this. Branch creation happens in Step 7.

Step 3: Reproduce (default only)

In --fast mode, skip this step. Trust the report and move to Step 5.

  • Find the simplest way to trigger the issue (a test, curl, script).
  • Confirm you can reproduce reliably.
  • If you can't reproduce:
    • Environment-specific? Check env vars, OS, runtime version, database state.
    • Intermittent? Likely a race condition. Look for shared mutable state, timing dependencies, async ordering assumptions.
    • Already fixed? git log for recent commits mentioning the issue.

Step 4: Investigate (default only)

In --fast mode, skip this and go to Step 5. Trust the report and minimize investigation depth.

Read the full file on GitHub · 123 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. 3d ago First seen · 123 lines · 43 tokens per session scan A d4e4e70a3a90

Subscribe to this mod's changes

debug-fix is a skill published in the GitHub repository poshan0126/dotclaude (860 stars, last pushed 6d ago), licensed MIT. It adds 43 tokens to every session and 1,207 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 2026-08-30.

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