bug-to-patch-generator

bug-to-patch-generator is a skill for Claude Code, Codex from ArabelaTso/Skills-4-SE. It costs 74 tokens per session (4,286 once invoked), scanned A, original, Apache-2.0.

A tool for turning bug reports, failing tests, error messages, stack traces, crash dumps, and runtime errors into code patches. It investigates the likely underlying cause before suggesting the fix.

In plain words
What is it for?
Use it to debug code, fix failed tests and runtime errors, address GitHub issues, or patch security vulnerabilities. It generates focused changes intended to preserve existing behavior.
Why use it?
It reduces the manual work of tracing failures through code and spotting incorrect logic, missing checks, edge cases, concurrency problems, or resource leaks.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to debug code, fix failed tests and runtime errors, address GitHub issues, or patch security vulnerabilities. It generates focused changes intended to preserve existing behavior.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/arabelatso/skills-4-se/bug-to-patch-generator
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.

Any agent
npx skills add ArabelaTso/Skills-4-SE --skill bug-to-patch-generator
Clone the repo
git clone --depth 1 https://github.com/ArabelaTso/Skills-4-SE

Made for: Claude Code, Codex.

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 bug-to-patch-generator

README.md
[![agentmods](https://agentmods.dev/badge/skills/arabelatso/skills-4-se/bug-to-patch-generator/github.svg)](https://agentmods.dev/skills/arabelatso/skills-4-se/bug-to-patch-generator)
Your own site
<a href="https://agentmods.dev/skills/arabelatso/skills-4-se/bug-to-patch-generator"><img src="https://agentmods.dev/badge/skills/arabelatso/skills-4-se/bug-to-patch-generator/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for bug-to-patch-generator

Your own site · 80×15
<a href="https://agentmods.dev/skills/arabelatso/skills-4-se/bug-to-patch-generator"><img src="https://agentmods.dev/badge/skills/arabelatso/skills-4-se/bug-to-patch-generator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 74 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,286 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Excessive Agency · line 583
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
How audits are shown
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 5.1 $0.00074 $0.04286
Opus 5 $0.00037 $0.02143
Sonnet 5 $0.00015 $0.00857
Haiku 4.5 $0.00007 $0.00429

Measured 10d ago against content hash 9f69aa969817, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

bug-to-patch-generator 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 10d 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.

skills/bug-to-patch-generator/SKILL.md · 734 lines

How it starts

The opening of the file, as written. The whole thing — 734 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Bug-to-Patch Generator

Automatically generate code fixes from bug reports, failing tests, error messages, and stack traces. Analyzes bug context, identifies root causes, and produces verified patches.

Core Capabilities

1. Bug Analysis

Understand bugs from multiple sources:

  • Failing test cases - Analyze test failures and expected vs actual behavior
  • Error messages - Parse exceptions, stack traces, and error logs
  • Bug reports - Process issue descriptions, reproduction steps, and screenshots
  • Crash dumps - Interpret segmentation faults, core dumps, and memory errors
  • Runtime errors - Handle assertion failures, type errors, and logic bugs

2. Root Cause Identification

Determine the underlying issue:

  • Trace error back to source
  • Identify incorrect logic or assumptions
  • Find missing validation or edge cases
  • Detect off-by-one errors and boundary issues
  • Recognize concurrency problems
  • Spot resource leaks and memory issues

3. Patch Generation

Create targeted fixes:

  • Minimal, focused changes
  • Preserve existing functionality
  • Follow code style and patterns
  • Include safety checks where needed
  • Add comments explaining the fix
  • Suggest related improvements

4. Patch Validation

Ensure fix correctness:

  • Verify fix addresses the bug
  • Check for regression risks
  • Suggest validation tests
  • Recommend manual verification steps
  • Consider edge cases and side effects

Bug-to-Patch Workflow

Step 1: Gather Bug Context

Collect all relevant information:

From failing tests:

FAILED tests/test_calculator.py::test_divide - ZeroDivisionError: division by zero

def test_divide():
    result = divide(10, 0)
    assert result == None  # Expected to return None for division by zero

From error messages:

Traceback (most recent call last):
  File "app.py", line 42, in process_data
    result = data[index]
IndexError: list index out of range

From bug reports:

Title: App crashes when processing empty file
Steps to reproduce:
1. Upload empty CSV file
2. Click "Process"
3. App crashes with NoneType error

Expected: Error message shown to user
Actual: Application crashes

Read the full file on GitHub · 734 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. 10d ago First seen · 734 lines · 74 tokens per session scan A 9f69aa969817

Subscribe to this mod's changes

bug-to-patch-generator is a skill published in the GitHub repository ArabelaTso/Skills-4-SE (251 stars, last pushed 20d ago), licensed Apache-2.0. It adds 74 tokens to every session and 4,286 once invoked, about $0.0004 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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