devils-advocatelisted

Get an outside-Anthropic second opinion on any piece of work by sending it to Google Gemini with an adversarial critique prompt. Use when the user wants to pressure-test a decision, plan, assumption, blog draft, landing page, positioning statement, campaign, or chunk of code with a non-Claude model. Trigger when the user says 'devil's advocate,' 'play devil's advocate,' 'poke holes,' 'stress test this,' 'second opinion,' 'outside perspective,' 'non-Anthropic read,' 'sanity check from another model,' 'challenge this,' 'critique this from outside,' or '/devils-advocate.' This is explicitly a cross-model sanity check — do NOT substitute your own critique; the whole point is to surface blind spots Claude might share.
t0ddharris/mktg-os · ★ 0 · AI & Automation · score 58

Install: claude install-skill t0ddharris/mktg-os

# Devil's Advocate Get a critique from an outside model (Google Gemini 3.1 Pro by default) to pressure-test work before it ships. The whole reason this skill exists is that Claude and the user may share the same blind spots after working on a piece of content together. Sending the work to a model in a different lineage surfaces weaknesses that neither of you will catch alone. **Never substitute your own critique for this tool.** If you find yourself about to write "here's what I think the weak points are" without running the script, stop — you are defeating the entire purpose of the skill. --- ## When to use this skill Use it when the user explicitly asks for a second opinion, a devil's advocate read, or to poke holes in something. Also proactively suggest it when: - The team is about to ship high-stakes work (a public launch plan, board-level messaging, a pricing decision, a bet-the-quarter campaign). - You and the user have been iterating for a while and the work feels "done" — fresh eyes matter most when confirmation bias is strongest. - the user is weighing a decision with several defensible answers (positioning shift, channel bet, org change). - A plan makes a claim that would be expensive to get wrong (projected pipeline, headcount, conversion lift). Do NOT reach for this skill for quick copy edits, tactical wordsmithing, or requests the user clearly wants done inside Claude. This is a heavier tool meant for moments where an outside critique has real value. ---