cross-critique

cross-critique is a skill for Claude Code, Codex from warpdotdev/common-skills. It costs 102 tokens per session (1,111 once invoked), scanned A, original, MIT.

A second review round in which agents critique one another's independent proposals before a final synthesis.

In plain words
What is it for?
Use it after collecting several opinions on architecture choices, code reviews, or other contested technical decisions.
Why use it?
It exposes hidden assumptions, failure modes, and trade-offs that may be missed when one person combines the proposals alone.

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/warpdotdev/common-skills/cross-critique
Any agent
npx skills add warpdotdev/common-skills --skill cross-critique
Clone the repo
git clone --depth 1 https://github.com/warpdotdev/common-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 cross-critique

README.md
[![agentmods](https://agentmods.dev/badge/skills/warpdotdev/common-skills/cross-critique.svg)](https://agentmods.dev/skills/warpdotdev/common-skills/cross-critique)
Your own site
<a href="https://agentmods.dev/skills/warpdotdev/common-skills/cross-critique"><img src="https://agentmods.dev/badge/skills/warpdotdev/common-skills/cross-critique.svg" alt="Measured on agentmods" height="20"></a>
Per session 102 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,111 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 $0.00102 $0.01111
Opus 5 $0.00051 $0.00556
Sonnet 5 $0.00020 $0.00222
Haiku 4.5 $0.00010 $0.00111

Measured 5d ago against content hash 1c6cf12ca9b8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

cross-critique 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 5d 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.

.agents/skills/cross-critique/SKILL.md · 87 lines

How it starts

The opening of the file, as written. The whole thing — 87 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Cross-Critique

Use this skill to run a second round after several subagents have independently produced proposals or opinions on the same contested question. Instead of synthesizing their reports yourself, you circulate each proposal to the other authors and ask them to critique it — pros and cons — and then you synthesize the richer set of analyses that results.

Why this matters

When you generate independent proposals (different models, different angles), each author ends up with deep context on the question — often deeper than yours, since they did the investigation. If you jump straight to synthesizing their reports alone, you're the bottleneck: you can only see the tradeoffs you happen to notice.

Asking the authors to critique each other is what a good leader does when seeking advice: get a few people with differing perspectives in a room, let them poke holes in each other's reasoning, and you walk away with a far more complete picture than any one of them — or you — would produce alone. The authors will surface failure modes, hidden assumptions, and tradeoffs that neither you nor the original proposer flagged.

When to use it

Use cross-critique when a decision is contested — i.e. independent agents produced genuinely divergent proposals, or the question is subjective enough that reasonable approaches disagree. Good fits:

  • Architecture and design tradeoffs.
  • Code review where reviewers reached different conclusions.
  • Competing root-cause theories for a bug.
  • Code-structure or API-shape decisions with no single right answer.

Don't bother when the proposals already strongly agree, or when the question has an objective answer you can verify directly — critique adds latency and tokens, and its value comes specifically from resolving genuine disagreement. Within that scope, use it freely; you don't need a high-stakes justification, just real divergence worth resolving.

Prerequisite: you need independent proposals first

This skill is the second round. It assumes you already have N independent proposals in hand. If you don't yet:

Read the full file on GitHub · 87 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. 5d ago First seen · 87 lines · 102 tokens per session scan A 1c6cf12ca9b8

Subscribe to this mod's changes

cross-critique is a skill published in the GitHub repository warpdotdev/common-skills (530 stars, last pushed 2d ago), licensed MIT. It adds 102 tokens to every session and 1,111 once invoked, about $0.0005 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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