issue-fixer

issue-fixer is a skill for Claude Code, Codex from cyberelf/agent_skills. It costs 70 tokens per session (959 once invoked), scanned A, original, MIT.

A structured skill for investigating and fixing software bugs, failed tests, and unexpected behavior.

In plain words
What is it for?
Diagnosing bugs, making focused fixes, assessing their impact, and validating the result with tests.
Why use it?
It guides the work from recording the issue and finding its cause through implementation, testing, and finalization.

Skill for Claude CodeCodex

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

Good fit Diagnosing bugs, making focused fixes, assessing their impact, and validating the result with tests.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/cyberelf/agent_skills/issue-fixer
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 cyberelf/agent_skills --skill issue-fixer
Clone the repo
git clone --depth 1 https://github.com/cyberelf/agent_skills

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 issue-fixer

README.md
[![agentmods](https://agentmods.dev/badge/skills/cyberelf/agent_skills/issue-fixer.svg)](https://agentmods.dev/skills/cyberelf/agent_skills/issue-fixer)
Your own site
<a href="https://agentmods.dev/skills/cyberelf/agent_skills/issue-fixer"><img src="https://agentmods.dev/badge/skills/cyberelf/agent_skills/issue-fixer.svg" alt="Measured on agentmods" height="20"></a>
Per session 70 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 959 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.
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 $0.00070 $0.00959
Opus 5 $0.00035 $0.00479
Sonnet 5 $0.00014 $0.00192
Haiku 4.5 $0.00007 $0.00096

Measured 7d ago against content hash e083f7e85272, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

issue-fixer 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 7d 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/issue-fixer/SKILL.md · 126 lines

How it starts

The opening of the file, as written. The whole thing — 126 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Issue Fixer

Overview

This skill provides a comprehensive, systematic workflow for investigating and fixing issues with minimal impact. It ensures proper issue tracking, thorough root cause analysis, impact assessment, quality validation, and automated testing for all fixes.

When to Use This Skill

Invoke this skill when:

  • User reports a bug or unexpected behavior
  • Tests are failing and need investigation
  • Features are broken or not working as expected
  • User explicitly requests a fix for a specific issue
  • Error messages or exceptions need resolution

Core Workflow

The issue-fixing process follows seven sequential phases:

  1. Issue Registration - Track the issue in .issues/opening.md
  2. Investigation - Find all related code and identify root cause
  3. Impact Assessment - Determine if it requires a simple fix or feature plan
  4. Implementation - Apply minimal, surgical changes
  5. Validation - Run quality checks and tests
  6. E2E Testing - Create/update end-to-end tests for full-stack fixes
  7. Finalization - Update issue status and generate summary

Quick Start Decision Tree

User reports issue
    │
    ├─→ Is issue already tracked in .issues/opening.md?
    │   ├─→ Yes: Note issue number, proceed to Investigation
    │   └─→ No: Register new issue, proceed to Investigation
    │
    └─→ After investigation, what is the impact?
        ├─→ HIGH (6+ files, 200+ LOC, architecture changes, breaking changes)
        │   └─→ Create feature plan, suggest handoff to speckit.plan, STOP
        │
        └─→ LOW/MEDIUM (1-5 files, <200 LOC, no breaking changes)
            └─→ Proceed with implementation → validation → testing → finalization

Detailed Workflow

For the complete step-by-step guide covering all seven phases, refer to:

references/workflow.md - Comprehensive workflow with detailed instructions for each phase including:

  • Issue registration format and procedures
  • Code discovery and root cause analysis techniques
  • Impact assessment criteria and decision points
  • Implementation principles and patterns
  • Quality validation commands for backend and frontend
  • E2E testing guidelines and patterns
  • Issue finalization procedures

Read the full file on GitHub · 126 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 7d ago First seen · 126 lines · 70 tokens per session scan A e083f7e85272

Subscribe to this mod's changes

issue-fixer is a skill published in the GitHub repository cyberelf/agent_skills (2 stars, last pushed 12d ago), licensed MIT. It adds 70 tokens to every session and 959 once invoked, about $0.0003 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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