Grill

Get a second opinion on a decision from an unrelated AI model before you commit. The judge argues against your plan, names the cheapest test for each doubt, and gives a verdict (solid, solid if, shaky, or doesn't hold up). Free, MIT licensed; needs an OpenRouter key for the Claude Desktop route.

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Documentation

πŸ”₯ Grill

A second opinion on your decisions, from a different AI company than the one you think with.

Setup guide: grillyour.ai

Tell the assistant you think with, "grill this": Claude, ChatGPT, Copilot, Gemini, Grok or Muse. It writes up your decision, and you check it. Then an outside judge, a model from a different company, argues the strongest case against it. It names the cheapest test that would settle each doubt, and gives a verdict. Before you decide, you write what you expect, how sure you are, and what would prove you wrong. You can look back later from a record you keep. Grill does not store it.

Verdict: shaky. The plan assumes customers stay at the new price, and nothing in it tests that. Falsifier: show the new price to one in ten new signups for two weeks, and compare how many start paying.

Set up

Claude Desktop and Claude Code enforce that in code. The copy-and-paste routes check it and warn you. Who to paste into is in the table below.

Claude Desktop (Mac or Windows): the one-click judge, 2 minutes

  1. Get a key for Grill's model router: go to openrouter.ai/keys, sign in, click Create key, and add $5 of credit. A grill costs about a few cents.
  2. Install Grill. Download grill.mcpb and double-click it, or drag it onto the Claude window. Paste your key when Claude asks. There's nothing else to install; Claude Desktop runs it.
  3. Try it. In any chat, type: Grill this: we're moving our launch to March. I'm 70% sure it gets us more signups.

The extension reads GRILL_API_KEY. OPENROUTER_API_KEY works when that is unset.

claude.ai on the web or your phone: no key needed

  1. Download grill-skill.zip. In Claude, open Customize β†’ Skills, upload it, and switch it on. To add everything at once instead, go to Customize β†’ Plugins β†’ Add β†’ Add marketplace and enter mtangoz/grill.
  2. Say "grill this: …". Claude writes the judge's prompt. Tap Open in ChatGPT, or paste it into Gemini, then paste the answer back into Claude.

Want it in one step? Use Claude Desktop, above.

ChatGPT, Copilot, Gemini, Grok or Muse: no install, no key

  1. Copy the Grill prompt into the assistant you think with, and say what you're deciding.
  2. It writes your decision up with you, then gives you a prompt for the judge.
  3. Paste that into an assistant from a different company, then paste the answer back.
You think withJudge with
ChatGPTClaude, Gemini or Grok
CopilotGemini, because Copilot can run OpenAI, Anthropic or xAI models
GeminiClaude, ChatGPT or Grok
Grok or GrokBotClaude, ChatGPT or Gemini
MuseClaude, ChatGPT or Gemini

Claude Code

/plugin marketplace add mtangoz/grill
/plugin install grill@grill

It asks for your model router key. Grill reads GRILL_API_KEY first. OPENROUTER_API_KEY works when that is unset.

What it costs

Grill is free. On your own key a grill is about a few cents. Copy and paste uses the assistants you already have.

Privacy

  • Your notes stay in your tools. Only the write-up you approve is sent. The reflection you write stays in your chat or your own notes.
  • The free tool has no account and stores nothing. Grill's makers never see your decisions.
  • A key or token in the write-up stops the run. Email addresses, phone numbers and card numbers are masked.

Details: docs/PRIVACY.md.

Weekly review

Optional, in Claude, when you keep your own decision log: docs/WEEKLY-REVIEW.md.

License

MIT. See LICENSE.