second-opinion

second-opinion is a skill for Claude Code, Codex from gopherguides/gopher-ai. It costs 80 tokens per session (1,010 once invoked), scanned A, original, MIT.

A skill that asks another language model for an independent view of difficult technical decisions or sensitive code.

In plain words
What is it for?
It is for reviewing architecture, database and API designs, framework choices, performance or security-sensitive code, complex algorithms, financial transactions, personal data, and concurrency.
Why use it?
It provides a sanity check when several approaches have meaningful trade-offs or when a mistake could be costly or risky.

Skill for Claude CodeCodex

Part of the llm-tools plugin — 4 skills, 7 commands shipped together

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/gopherguides/gopher-ai/second-opinion
Any agent
npx skills add gopherguides/gopher-ai --skill second-opinion
Clone the repo
git clone --depth 1 https://github.com/gopherguides/gopher-ai

Made for: Claude Code, Codex.

Or install llm-tools, the plugin that ships this one along with the rest of its 4 skills, 7 commands.

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 second-opinion

README.md
[![agentmods](https://agentmods.dev/badge/skills/gopherguides/gopher-ai/second-opinion.svg)](https://agentmods.dev/skills/gopherguides/gopher-ai/second-opinion)
Your own site
<a href="https://agentmods.dev/skills/gopherguides/gopher-ai/second-opinion"><img src="https://agentmods.dev/badge/skills/gopherguides/gopher-ai/second-opinion.svg" alt="Measured on agentmods" height="20"></a>
Per session 80 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,010 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 $0.00080 $0.01010
Opus 5 $0.00040 $0.00505
Sonnet 5 $0.00016 $0.00202
Haiku 4.5 $0.00008 $0.00101

Measured yesterday against content hash 2aa410709e69, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

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 yesterday.

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.

plugins/llm-tools/skills/second-opinion/SKILL.md · 116 lines

How it starts

The opening of the file, as written. The whole thing — 116 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Second Opinion Skill

Proactively suggest getting another LLM's perspective when the situation warrants it.

Trigger Conditions

Suggest a second opinion when you detect:

1. Architectural Decisions

  • Choosing between design patterns (e.g., repository vs service layer)
  • Database schema design decisions
  • API design choices (REST vs GraphQL, versioning strategy)
  • Service decomposition (monolith vs microservices)
  • State management approaches

2. Complex Trade-offs

  • Performance vs. readability
  • Flexibility vs. simplicity
  • DRY vs. explicit code
  • Build vs. buy decisions
  • Consistency vs. availability trade-offs

3. Critical Code Reviews

  • Security-sensitive code (authentication, authorization, crypto)
  • Performance-critical paths
  • Complex algorithms or data structures
  • Code handling financial transactions or PII
  • Concurrency and threading logic

4. Explicit Requests (trigger words)

  • "another perspective"
  • "second opinion"
  • "sanity check"
  • "what do you think"
  • "am I on the right track"
  • "does this make sense"
  • "is this a good approach"

How to Suggest

A second opinion is most valuable from a different model family than the one that wrote the code. Bind the active assistant surface before suggesting an invocation.

Gemini CLI

Offer only commands packaged by the active gopher-ai-llm-tools extension:

  • /ollama <specific question> asks an installed Ollama model. Treat it as local only after verifying that OLLAMA_HOST resolves to a loopback host.
  • /llm-compare <specific question> compares the available providers.

If a bare command conflicts with a user or project command, use the extension-prefixed form shown by /commands list, such as /gopher-ai-llm-tools.ollama. Never suggest command syntax from another assistant surface on Gemini CLI.

Codex

Offer only installed Codex skills:

  • $llm-tools:gemini <specific question> asks Google Gemini. Explain that the prompt goes to a cloud provider and that adding code or repository context requires explicit confirmation.
  • $llm-tools:ollama <specific question> asks an installed Ollama model. Its privacy boundary depends on the configured Ollama endpoint; the provider skill verifies loopback destinations or confirms a non-loopback transfer.

Read the full file on GitHub · 116 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. yesterday Changed · +15 lines 2aa410709e69
  2. 5d ago First seen · 101 lines · 80 tokens per session scan A 9b00bc9c9a0e

Subscribe to this mod's changes

second-opinion is a skill published in the GitHub repository gopherguides/gopher-ai (21 stars, last pushed today), licensed MIT. It adds 80 tokens to every session and 1,010 once invoked, about $0.0004 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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