fix

A workflow for diagnosing and fixing coding problems, including bugs, errors, merge conflicts, and failing continuous-integration checks. Continuous integration runs automated builds and tests when code changes.

In plain words
What is it for?
Use it when code is broken, tests or builds fail, a pull request has failing checks, or branches have merge conflicts.
Why use it?
It organizes investigation, testing, implementation, and verification so failures can be traced and corrected without overlapping edits causing new problems.

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/darkroomengineering/cc-settings/fix
Any agent
npx skills add darkroomengineering/cc-settings --skill fix
Clone the repo
git clone --depth 1 https://github.com/darkroomengineering/cc-settings

Made for: Claude Code, Codex.

Per session 63 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,761 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 $0.00063 $0.01761
Opus 5 $0.00032 $0.00881
Sonnet 5 $0.00013 $0.00352
Haiku 4.5 $0.00006 $0.00176

Measured 2d ago against content hash d596cf77e52c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

fix 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.

skills/fix/SKILL.md · 155 lines

How it starts

The opening of the file, as written. The whole thing — 155 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Bug Fix Workflow

Standalone Codex

Skip the Claude marker and !command interpolation below. Run git branch --show-current, git log --oneline -5, and git status --porcelain explicitly. Create each new agent with spawn_agent, continue a live agent with send_message, trigger another turn for an idle existing agent with followup_task, wait with wait_agent, and stop a current turn with interrupt_agent only when necessary. Never spawn codex-verifier and never run codex-run.ts from inside Codex.

Writers share the working tree unless the live host explicitly offers isolation. Give every writer non-overlapping ownership and serialize the test-writer, implementer, and verification writer phases. Only read-only reviewers may overlap. Wait until the explorer finishes before starting a test writer; wait until that writer finishes before implementation. Codex implementers are not promised Claude worktree isolation.

Use Context7 only when the user configured it. Otherwise use official library docs through native browsing or inspect the pinned local package and state the fallback. This package does not auto-run unpinned registry MCP packages.

Claude-only marker: standalone Codex must skip this command. mkdir -p ~/.claude/tmp && echo "fix" > ~/.claude/tmp/heavy-skill-active && date -u +"%Y-%m-%dT%H:%M:%SZ" >> ~/.claude/tmp/heavy-skill-active

You are in Maestro orchestration mode. Delegate immediately to specialized agents.

Current State

  • Branch: !git branch --show-current 2>/dev/null || echo "unknown"
  • Recent commits: !git log --oneline -5 2>/dev/null || echo "no commits"
  • Uncommitted changes: !git status --porcelain 2>/dev/null | head -10

Workflow

  1. Explore - Spawn explore agent to understand the affected codebase area
  2. Reproduce - Spawn tester agent to create a failing test if possible
  3. Diagnose - Analyze findings to identify root cause. Commits named in the bug report are hypotheses, not conclusions — blame the actually-affected file's history before fixing; regressions often ride in earlier on the same branch as the change that got blamed
  4. Implement - Spawn implementer agent to fix the issue
  5. Verify - Spawn tester agent to confirm the fix
  6. Learn - If this was a non-obvious fix, the auto-memory system in ~/.claude/CLAUDE.md captures it; for team-wide gotchas use /share-learning to post to the team-knowledge repo

Read the full file on GitHub · 155 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 · 155 lines · 63 tokens per session scan A d596cf77e52c

Subscribe to this mod's changes

fix is a skill published in the GitHub repository darkroomengineering/cc-settings (42 stars, last pushed 4d ago), licensed MIT. It adds 63 tokens to every session and 1,761 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 2026-08-30.

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