code-review

A small, vendor-neutral code-review skill written in an open standard that different coding-agent providers can read. Its body contains the review instructions.

In plain words
What is it for?
Testing open-standard skill loading and providing basic code-review instructions to compatible coding agents.
Why use it?
It offers a simple example of a portable skill format without tying the instructions to one vendor.

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/crystian/skill-map/code-review
Any agent
npx skills add crystian/skill-map --skill code-review
Clone the repo
git clone --depth 1 https://github.com/crystian/skill-map

Made for: Claude Code, Codex.

Per session 31 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 87 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 $0.00031 $0.00087
Opus 5 $0.00015 $0.00044
Sonnet 5 $0.00006 $0.00017
Haiku 4.5 $0.00003 $0.00009

Measured 2d ago against content hash 48d7c181bd79, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

code-review 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.

src/plugins/agent-skills/providers/agent-skills/conformance/fixtures/minimal-agent-skills/.agents/skills/code-review/SKILL.md · 12 lines

What it actually says

Code review

Open-standard skill fixture. The body is the agent's instructions; only name and description are required by the open-standard format.

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 · 12 lines · 31 tokens per session scan A 48d7c181bd79

Subscribe to this mod's changes

code-review is a skill published in the GitHub repository crystian/skill-map (59 stars, last pushed 2d ago), licensed MIT. It adds 31 tokens to every session and 87 once invoked, about $0.0002 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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