code-ultrareview

code-ultrareview is a skill for Claude Code from coroboros/agent-skills. It costs 207 tokens per session (3,901 once invoked), scanned A, original, MIT.

A structured code-review guide that checks a code change across correctness, simplicity, tests, documentation, style, intent, design, and performance. It also checks whether metadata changes remain consistent.

In plain words
What is it for?
Use it to review the current code difference, run the project’s available deterministic checks, and report verified findings or clearly marked risks.
Why use it?
It helps reveal defects, unnecessary complexity, missing tests, and mismatches between the change and its stated purpose before the code is accepted.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: mentions subagents; mentions Claude Code.

Part of the coding-skills plugin — 2 skills shipped together

Good fit Use it to review the current code difference, run the project’s available deterministic checks, and report verified findings or clearly marked risks.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/coroboros/agent-skills/code-ultrareview
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 coroboros/agent-skills --skill code-ultrareview
Clone the repo
git clone --depth 1 https://github.com/coroboros/agent-skills

Made for: Claude Code.

Or install coding-skills, the plugin that ships this one along with the rest of its 2 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 code-ultrareview

README.md
[![agentmods](https://agentmods.dev/badge/skills/coroboros/agent-skills/code-ultrareview.svg)](https://agentmods.dev/skills/coroboros/agent-skills/code-ultrareview)
Your own site
<a href="https://agentmods.dev/skills/coroboros/agent-skills/code-ultrareview"><img src="https://agentmods.dev/badge/skills/coroboros/agent-skills/code-ultrareview.svg" alt="Measured on agentmods" height="20"></a>
Per session 207 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,901 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 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 $0.00207 $0.03901
Opus 5 $0.00103 $0.01951
Sonnet 5 $0.00041 $0.00780
Haiku 4.5 $0.00021 $0.00390

Measured 4d ago against content hash 5a8e3143c4fe, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

code-ultrareview 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 4d ago.

The scan reads SKILL.md. This mod also ships 37 executable files (scripts/apply_safe/__init__.py, scripts/apply_safe/_common.py, scripts/apply_safe/description_sync.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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/code-ultrareview/SKILL.md · 153 lines

How it starts

The opening of the file, as written. The whole thing — 153 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Code ultrareview

Critical — Adversarial verification

These rules govern how this skill trusts its own output — apply them whenever it verifies a claim, a defect, a source, or a decision before acting on it.

  • Refute by default. Treat each non-trivial finding as unproven until a fresh-context check fails to refute it — the context that produced a claim cannot reliably clear it.
  • No silent drop. Every finding flips the conclusion, is refuted in writing, or is filed as a risk or open question. A finding that vanishes without a verdict is a defect.
  • Don't re-litigate settled facts. Spend adversarial effort on load-bearing or contested claims; let established facts pass. Over-refutation manufactures false doubt — it does not add rigor.
  • Stay selective and cost-aware. Scale verification to the stakes; reversible, low-impact work gets a light touch, not a full adversarial sweep.
  • Concede only to a strong rebuttal. A weak counter folds into the finding or gets filed; it does not overturn it.

Important — Engineering discipline

These rules govern how this skill changes code — apply them whenever it writes, edits, or proposes a fix.

  • Minimal scope. Only what's directly requested or clearly necessary — no extra files, no abstraction for one use, no configurability nobody asked for, no error handling for states that can't happen. Validate at system boundaries; trust internal code.
  • General solution, not the test cases. Implement the real logic for all valid inputs; never hard-code to inputs or bolt on workaround scripts to make a test pass. Tests verify the solution; they don't define it. A test is wrong? Say so — don't bend correct code to a broken test.
  • Investigate before claiming. Never speculate about code you haven't opened; read the referenced file before answering. Ground every claim in what you actually read, not a plausible guess.

Read the full file on GitHub · 153 lines

Files

What ships with it

57 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 4d ago Changed 5a8e3143c4fe
  2. 7d ago First seen · 153 lines · 207 tokens per session scan A c58000199d3f

Subscribe to this mod's changes

code-ultrareview is a skill published in the GitHub repository coroboros/agent-skills (4 stars, last pushed yesterday), licensed MIT. It adds 207 tokens to every session and 3,901 once invoked, about $0.0010 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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