The Gauntlet Loop
Prompt Generator
Tell it what you want to create. It writes the exact prompt to paste into Claude Code — in the style of the prompt behind Claude of Duty.
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Writing your prompt0s
Your Gauntlet Loop prompt is ready.
Copy it, then read how to run it — the four steps aren’t optional.
A Gauntlet Loop is a long, expensive run. before you paste.
How to run it — do all four or it won’t work
Open Claude Code with Opus 5
This prompt needs an agent that can spawn subagents and inspect its own work. Claude Code with Opus 5 is what the original run used. A normal chat window will not produce the same result.
Turn on ultracode
Type /effort and select ultracode. This is not a nice-to-have — the run will not hit the same bar without it.
Remove skills and MCP servers
Run it in a clean session with no skills and no MCP servers installed or enabled. They hijack the loop, and the prompt works dramatically worse with them.
Paste it and walk away
Don’t steer it. It will keep a live progress page updated — watch that instead, and stop the run when you love what you see.
Before you run it: this costs real money
A Gauntlet Loop is a long, multi-agent run on ultracode. It can burn through an enormous number of tokens — easily a big chunk of a Max plan’s weekly limit, or serious money on API billing.
Watch your token budget the whole time it runs, and stop the run before spend passes what you’re comfortable with. You are responsible for whatever you spend and whatever it builds — Something Big Is Happening is not liable for either.
Every prompt this writes follows the method from How to Run a Gauntlet Loop: a real bar the agent can inspect, work split into independently judgeable pieces, and a separate harsh critic for every builder.
Built something great with it? Submit it to the games directory.