fix-issue

fix-issue is a skill for Claude Code from justnau1020/claude-os. It costs 52 tokens per session (356 once invoked), scanned A, original, Apache-2.0.

An end-to-end workflow for fixing a GitHub issue, which is a tracked bug report or requested change. It includes understanding the report, changing the code, testing it, and creating a commit.

In plain words
What is it for?
Use it to inspect an issue and its reproduction steps, research the relevant code, implement a minimal fix, mock external APIs in tests, run checks, and create a commit without pushing it.
Why use it?
It turns an issue into a focused, verifiable change while preserving project conventions and adding a test for the problem.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit Use it to inspect an issue and its reproduction steps, research the relevant code, implement a minimal fix, mock external APIs in tests, run checks, and create a commit without pushing it.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/justnau1020/claude-os/fix-issue
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 justnau1020/claude-os --skill fix-issue
Clone the repo
git clone --depth 1 https://github.com/justnau1020/claude-os

Made for: Claude Code.

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 fix-issue

README.md
[![agentmods](https://agentmods.dev/badge/skills/justnau1020/claude-os/fix-issue/github.svg)](https://agentmods.dev/skills/justnau1020/claude-os/fix-issue)
Your own site
<a href="https://agentmods.dev/skills/justnau1020/claude-os/fix-issue"><img src="https://agentmods.dev/badge/skills/justnau1020/claude-os/fix-issue/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 fix-issue

Your own site · 80×15
<a href="https://agentmods.dev/skills/justnau1020/claude-os/fix-issue"><img src="https://agentmods.dev/badge/skills/justnau1020/claude-os/fix-issue.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 52 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 356 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 $0.00052 $0.00356
Opus 5 $0.00026 $0.00178
Sonnet 5 $0.00010 $0.00071
Haiku 4.5 $0.00005 $0.00036

Measured 10d ago against content hash df1735d58e84, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

fix-issue 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/development/fix-issue/SKILL.md · 58 lines

What it actually says

Fix GitHub Issue

Fix issue #$ARGUMENTS end-to-end.

Steps

1. Read the issue

gh issue view $ARGUMENTS

Understand the problem, expected behavior, and any reproduction steps.

2. Research the codebase

Find the relevant files using the issue description. Read the code to understand the current behavior and what needs to change.

3. Implement the fix

  • Follow the project's existing conventions and patterns
  • Make minimal, focused changes -- fix the bug, don't refactor surrounding code
  • Add type hints to any new code

4. Write or update tests

  • Add a test that would have caught this bug
  • Verify existing tests still pass
  • Mock external APIs -- no real network calls

5. Verify

Run the project's CI pipeline locally:

# Adjust these commands to match your project's tooling
pytest tests/ -v --tb=short
# lint check
# type check

6. Create a commit

Stage only the files you changed and commit with a message referencing the issue:

Fix #$ARGUMENTS: <brief description of what was fixed>

Do NOT push -- let the user decide when to push.

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 · 58 lines · 52 tokens per session scan A df1735d58e84

Subscribe to this mod's changes

fix-issue is a skill published in the GitHub repository justnau1020/claude-os (3 stars, last pushed 5mo ago), licensed Apache-2.0. It adds 52 tokens to every session and 356 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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