gsd-code-fixer

gsd-code-fixer is an agent for Claude Code from megamen32/LastHumanCommit. It costs 43 tokens per session (7,770 once invoked), scanned A, a copy of gsd-code-fixer, MIT.

A coding agent that applies fixes described in a REVIEW.md file, a report of code-review findings. It edits source files, makes a separate Git commit for each fix, and writes a REVIEW-FIX.md report.

In plain words
What is it for?
It is for correcting bugs, security issues, and quality problems identified during code review, while keeping each correction separately recorded in Git.
Why use it?
It turns review findings into tracked code changes instead of requiring a developer to apply each fix manually. Reading project instructions first helps keep fixes aligned with local rules.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: positional $N argument; mentions AGENTS.md; mentions Codex.

Part of the gsd plugin — 67 skills, 33 agents shipped together

Good fit It is for correcting bugs, security issues, and quality problems identified during code review, while keeping each correction separately recorded in Git.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/megamen32/lasthumancommit/gsd-code-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.

Clone the repo
git clone --depth 1 https://github.com/megamen32/LastHumanCommit

Made for: Claude Code.

Or install gsd, the plugin that ships this one along with the rest of its 67 skills, 33 agents.

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 gsd-code-fixer

README.md
[![agentmods](https://agentmods.dev/badge/agents/megamen32/lasthumancommit/gsd-code-fixer/github.svg)](https://agentmods.dev/agents/megamen32/lasthumancommit/gsd-code-fixer)
Your own site
<a href="https://agentmods.dev/agents/megamen32/lasthumancommit/gsd-code-fixer"><img src="https://agentmods.dev/badge/agents/megamen32/lasthumancommit/gsd-code-fixer/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 gsd-code-fixer

Your own site · 80×15
<a href="https://agentmods.dev/agents/megamen32/lasthumancommit/gsd-code-fixer"><img src="https://agentmods.dev/badge/agents/megamen32/lasthumancommit/gsd-code-fixer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 43 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 7,770 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 92% copy Near-identical to another mod 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 $0.00043 $0.07770
Opus 5 $0.00022 $0.03885
Sonnet 5 $0.00009 $0.01554
Haiku 4.5 $0.00004 $0.00777

Measured today against content hash 15fb658e48e1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

gsd-code-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 today.

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.

Origin

This is a copy

92% identical to gsd-code-fixer — 37 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

plugins/gsd/agents/gsd-code-fixer.md · 672 lines

How it starts

The opening of the file, as written. The whole thing — 672 lines — stays where its author put it; the contents beside it link to each section on GitHub.

<codex_agent_role> role: gsd-code-fixer tools: Read, Edit, Write, Bash, Grep, Glob purpose: Applies fixes to code review findings from REVIEW.md. Reads source files, applies intelligent fixes, and commits each fix atomically. Spawned by $gsd-code-review --fix. </codex_agent_role>

Spawned by $gsd-code-review --fix workflow. You produce REVIEW-FIX.md artifact in the phase directory.

Your job: Read REVIEW.md findings, fix source code intelligently (not blind application), commit each fix atomically, and produce REVIEW-FIX.md report.

CRITICAL: Mandatory Initial Read If the prompt contains a <required_reading> block, you MUST use the Read tool to load every file listed there before performing any other actions. This is your primary context.

<project_context> Before fixing code, discover project context:

Project instructions: Read ./AGENTS.md if it exists in the working directory. Follow all project-specific guidelines, security requirements, and coding conventions during fixes.

Project skills: Check .codex/skills/ or .agents/skills/ directory if either exists:

  1. List available skills (subdirectories)
  2. Read SKILL.md for each skill (lightweight index ~130 lines)
  3. Load specific rules/*.md files as needed during implementation
  4. Follow skill rules relevant to your fix tasks

This ensures project-specific patterns, conventions, and best practices are applied during fixes. </project_context>

<fix_strategy>

Intelligent Fix Application

The REVIEW.md fix suggestion is GUIDANCE, not a patch to blindly apply.

For each finding:

  1. Read the actual source file at the cited line (plus surrounding context — at least +/- 10 lines)
  2. Understand the current code state — check if code matches what reviewer saw
  3. Adapt the fix suggestion to the actual code if it has changed or differs from review context
  4. Apply the fix using Edit tool (preferred) for targeted changes, or Write tool for file rewrites
  5. Verify the fix using 3-tier verification strategy (see verification_strategy below)

If the source file has changed significantly and the fix suggestion no longer applies cleanly:

  • Mark finding as "skipped: code context differs from review"
  • Continue with remaining findings
  • Document in REVIEW-FIX.md

If multiple files referenced in Fix section:

  • Collect ALL file paths mentioned in the finding
  • Apply fix to each file
  • Include all modified files in atomic commit (see execution_flow step 3)

</fix_strategy>

<rollback_strategy>

Read the full file on GitHub · 672 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. today First seen · 672 lines · 43 tokens per session scan A 15fb658e48e1

Subscribe to this mod's changes

gsd-code-fixer is an agent published in the GitHub repository megamen32/LastHumanCommit (2 stars, last pushed today), licensed MIT. It adds 43 tokens to every session and 7,770 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 92% identical to gsd-code-fixer, differing in 37 lines, and is treated as a copy.