vet

vet is a skill for Claude Code, Codex from evist0/okf-matt-skills. It costs 95 tokens per session (1,534 once invoked), scanned A, a copy of code-review, MIT.

A two-part code review that compares changes from a chosen Git reference, such as a commit, branch, tag, or merge base, with both the repository’s standards and the requested specification.

In plain words
What is it for?
Use it to review a non-empty Git diff against its starting point and receive separate standards and specification findings.
Why use it?
It separates style and policy problems from problems where the implementation does not match the original issue or product requirements.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions subagents.

Good fit Use it to review a non-empty Git diff against its starting point and receive separate standards and specification findings.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/evist0/okf-matt-skills/vet
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 evist0/okf-matt-skills --skill vet
Clone the repo
git clone --depth 1 https://github.com/evist0/okf-matt-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 vet

README.md
[![agentmods](https://agentmods.dev/badge/skills/evist0/okf-matt-skills/vet/github.svg)](https://agentmods.dev/skills/evist0/okf-matt-skills/vet)
Your own site
<a href="https://agentmods.dev/skills/evist0/okf-matt-skills/vet"><img src="https://agentmods.dev/badge/skills/evist0/okf-matt-skills/vet/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 vet

Your own site · 80×15
<a href="https://agentmods.dev/skills/evist0/okf-matt-skills/vet"><img src="https://agentmods.dev/badge/skills/evist0/okf-matt-skills/vet.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 95 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,534 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 83% 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 $0.00095 $0.01534
Opus 5 $0.00048 $0.00767
Sonnet 5 $0.00019 $0.00307
Haiku 4.5 $0.00010 $0.00153

Measured 11d ago against content hash 037512fd63b6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

vet 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 11d 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.

Origin

This is a copy

83% identical to code-review — 60 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.

vet/SKILL.md · 90 lines

How it starts

The opening of the file, as written. The whole thing — 90 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Two-axis review of the diff between HEAD and a fixed point the user supplies:

  • Standards — does the code conform to this repo's documented coding standards?
  • Spec — does the code faithfully implement the originating issue / PRD / spec?

Both axes run as parallel sub-agents so they don't pollute each other's context, then this skill aggregates their findings.

The issue tracker should have been provided to you — run /setup-okf-matt-skills if knowledge/_agents/issue-tracker.md is missing.

Process

1. Pin the fixed point

Whatever the user said is the fixed point — a commit SHA, branch name, tag, main, HEAD~5, etc. If they didn't specify one, ask for it.

Capture the diff command once: git diff <fixed-point>...HEAD (three-dot, so the comparison is against the merge-base). Also note the list of commits via git log <fixed-point>..HEAD --oneline.

Before going further, confirm the fixed point resolves (git rev-parse <fixed-point>) and the diff is non-empty. A bad ref or empty diff should fail here — not inside two parallel sub-agents.

2. Identify the spec source

Look for the originating spec, in this order:

  1. Issue references in the commit messages (#123, Closes #45, GitLab !67, etc.) — fetch via the workflow in knowledge/_agents/issue-tracker.md.
  2. A path the user passed as an argument.
  3. A PRD/spec file under docs/, specs/, or .scratch/ matching the branch name or feature.
  4. If nothing is found, ask the user where the spec is. If they say there isn't one, the Spec sub-agent will skip and report "no spec available".

3. Identify the standards sources

Anything in the repo that documents how code should be written, such as CODING_STANDARDS.md or CONTRIBUTING.md.

On top of whatever the repo documents, the Standards axis always carries the smell baseline below — a fixed set of Fowler code smells (Refactoring, ch.3) that applies even when a repo documents nothing. Two rules bind it:

  • The repo overrides. A documented repo standard always wins; where it endorses something the baseline would flag, suppress the smell.
  • Always a judgement call. Each smell is a labelled heuristic ("possible Feature Envy"), never a hard violation — and, like any standard here, skip anything tooling already enforces.

Read the full file on GitHub · 90 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. 11d ago First seen · 90 lines · 95 tokens per session scan A 037512fd63b6

Subscribe to this mod's changes

vet is a skill published in the GitHub repository evist0/okf-matt-skills (13 stars, last pushed 2mo ago), licensed MIT. It adds 95 tokens to every session and 1,534 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. It is 83% identical to code-review, differing in 60 lines, and is treated as a copy.

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