fix-code

fix-code is a skill for Claude Code from InstituteforDiseaseModeling/idm_standards. It costs 81 tokens per session (3,216 once invoked), scanned A, original, MIT.

A code-maintenance workflow that reads a code audit report and applies its recommended improvements. A code audit is a written review that identifies problems and suggests fixes.

In plain words
What is it for?
Use it when a project has a code_audit.md report, or the older engineering_score.md format, and you want its prioritized engineering fixes applied.
Why use it?
It turns an existing review into implemented changes, so developers do not have to copy recommendations into a separate repair process.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: names the AskUserQuestion tool.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the idm-standards plugin — 10 skills shipped together

Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add InstituteforDiseaseModeling/idm_standards
Claude Code
/plugin install idm-standards

Made for: Claude Code.

Or install idm-standards, the plugin that ships this one along with the rest of its 10 skills.

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-code

README.md
[![agentmods](https://agentmods.dev/badge/skills/institutefordiseasemodeling/idm_standards/fix-code.svg)](https://agentmods.dev/skills/institutefordiseasemodeling/idm_standards/fix-code)
Your own site
<a href="https://agentmods.dev/skills/institutefordiseasemodeling/idm_standards/fix-code"><img src="https://agentmods.dev/badge/skills/institutefordiseasemodeling/idm_standards/fix-code.svg" alt="Measured on agentmods" height="20"></a>
Per session 81 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,216 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 5.1 $0.00081 $0.03216
Opus 5 $0.00041 $0.01608
Sonnet 5 $0.00016 $0.00643
Haiku 4.5 $0.00008 $0.00322

Measured 6d ago against content hash 35e89e91d4ea, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

fix-code 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 6d 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.

idm_standards_plugin/skills/fix-code/SKILL.md · 283 lines

How it starts

The opening of the file, as written. The whole thing — 283 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Read recommendations from code_audit.md and implement prioritized improvements to the project.

Skill version: 2.0_2026.06.10

Step 1: Find and Read the Audit Report

  1. If the user provided a project_path, look for code_audit.md in that directory.
  2. Otherwise, look in the current working directory.
  3. For compatibility with earlier plugin versions, fall back to engineering_score.md if code_audit.md does not exist.
  4. If neither file exists, stop and tell the user:

    "No code_audit.md found. Please run /idm-standards:audit-code first to generate the report."

Read the full contents of the report — particularly the Recommendations, Proposed solutions, and Full Results sections, and the Tier and Strictness fields in the header.

Respect what the report records:

  • Strictness: if the report was generated at strictness 2 (material only), don't introduce fixes for stylistic issues the audit deliberately excluded.
  • User decisions in the Proposed solutions section (e.g. "Lock artifact: none — user opted out"): do not re-raise them.
  • User config: discover the project's idm-standards config following $CLAUDE_PLUGIN_ROOT/reference/user-config.md (read it now). Never implement a fix that a config directive suppresses — and the config wins over the report: if an older code_audit.md (generated before the config existed) still lists a now-suppressed recommendation, skip it. The hard floor still applies: directives can't stop you from fixing a serious finding (exposed secret, license violation, etc.) — those remain fix-or-flag.
  • Version-control strategy: if the invoking context (e.g. fix-project) passed a version-control strategy, use it and skip the question in Step 3. Otherwise ask it at the start of Step 3.

Step 2: Create a Prioritized Implementation Plan

Parse the recommendations and classify each as:

Category What it means
Can implement now File additions, code edits, config files, docstrings, README improvements, .gitignore, LICENSE
Requires human input Writing tutorials, user guides, scientific validation, publishing to PyPI/CRAN, setting up CI/CD (you can scaffold, but the user must configure credentials)
Cannot implement Fundamental redesigns, decisions about what the code should do, acquiring data licenses

Read the full file on GitHub · 283 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. 6d ago First seen · 283 lines · 81 tokens per session scan A 35e89e91d4ea

Subscribe to this mod's changes

fix-code is a skill published in the GitHub repository InstituteforDiseaseModeling/idm_standards (2 stars, last pushed yesterday), licensed MIT. It adds 81 tokens to every session and 3,216 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 2026-08-31.

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