claudex-second-opinion

claudex-second-opinion is a skill for Claude Code from hamza-ali-shahjahan/claudex. It costs 74 tokens per session (475 once invoked), scanned A, a copy of claudex-second-opinion, MIT.

A reminder to request a second review from another coding model after substantial, risky, or uncertain changes.

In plain words
What is it for?
Use it before shipping changes involving security, payments, migrations, concurrency, cryptography, large refactors, or an unconfirmed bug diagnosis.
Why use it?
It points out when an extra opinion may reveal blind spots, while leaving the review to the user instead of spending their review quota automatically.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: mentions Codex.

Part of the claudex plugin — 1 skill, 7 commands, 1 hook shipped together

Good fit Use it before shipping changes involving security, payments, migrations, concurrency, cryptography, large refactors, or an unconfirmed bug diagnosis.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/hamza-ali-shahjahan/claudex/claudex-second-opinion
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 hamza-ali-shahjahan/claudex --skill claudex-second-opinion
Clone the repo
git clone --depth 1 https://github.com/hamza-ali-shahjahan/claudex

Made for: Claude Code.

Or install claudex, the plugin that ships this one along with the rest of its 1 skill, 7 commands, 1 hook.

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 claudex-second-opinion

README.md
[![agentmods](https://agentmods.dev/badge/skills/hamza-ali-shahjahan/claudex/claudex-second-opinion/github.svg)](https://agentmods.dev/skills/hamza-ali-shahjahan/claudex/claudex-second-opinion)
Your own site
<a href="https://agentmods.dev/skills/hamza-ali-shahjahan/claudex/claudex-second-opinion"><img src="https://agentmods.dev/badge/skills/hamza-ali-shahjahan/claudex/claudex-second-opinion/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 claudex-second-opinion

Your own site · 80×15
<a href="https://agentmods.dev/skills/hamza-ali-shahjahan/claudex/claudex-second-opinion"><img src="https://agentmods.dev/badge/skills/hamza-ali-shahjahan/claudex/claudex-second-opinion.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 74 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 475 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 100% 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 $0.00074 $0.00475
Opus 5.5 $0.00030 $0.00190
Sonnet 5.5 $0.00015 $0.00095
Haiku 4.5 $0.00007 $0.00047

Measured 1mo ago against content hash 57f6f545e89c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

claudex-second-opinion 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 1mo 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

100% identical to claudex-second-opinion — 0 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.

plugins/claudex/skills/claudex-second-opinion/SKILL.md · 44 lines

What it actually says

ClauDex Second Opinion

Overview

When a change is substantial or risky, suggest a cross-model review with /claudex:verdict. Two frontier models trained by rival labs have different blind spots — when both flag the same line it's the strongest free review signal there is, and where they disagree is exactly where a human should look.

Hard rule: never run codex yourself under this skill. A cross-model review spends the user's Codex quota and adds real latency. Explicit invocation is consent — your job here is one well-timed suggestion, nothing more.

When to suggest

  • The change touches auth, payments, data deletion, migrations, concurrency, or crypto
  • A multi-file refactor or roughly 150+ changed lines
  • A bug fix where the root cause was never fully confirmed
  • The user sounds unsure ("I think this works", "hopefully that's it")
  • The user is weighing an architectural choice before code exists — then the right suggestion is /claudex:debate <the decision>, not a verdict (a debate needs a question, not a diff)

When to stay quiet

  • Trivial or mechanical changes: docs, formatting, renames, config bumps
  • As far as you can tell from the visible conversation, a ClauDex command already ran on this diff (best-effort — don't re-suggest what the user just did)
  • The Codex CLI isn't installed — at most, mention /claudex:setup once in the visible conversation, then drop it

How to suggest

One line, at the end of your reply, naming the specific risk. Never more than one suggestion per change, never as an interruption:

This touched the payment webhook — worth a cross-model check: /claudex:verdict payments flow

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. 1mo ago First seen · 44 lines · 74 tokens per session scan A 57f6f545e89c

Subscribe to this mod's changes

claudex-second-opinion is a skill published in the GitHub repository hamza-ali-shahjahan/claudex (4 stars, last pushed 2mo ago), licensed MIT. It adds 74 tokens to every session and 475 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to claudex-second-opinion, differing in 0 lines, and is treated as a copy.

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