Developer Builds AI-Powered 'Rubber Duck' That Roasts and Debugs Your Code

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A developer has created Unducked, a web tool at unducked.com that uses an AI agent to review submitted code in the style of an abrasive culinary critic, roasting the quality of the code before identifying the actual bug and providing a fix. The project reimagines the classic rubber-duck debugging technique, where programmers explain code aloud to spot errors, by giving the duck a loud, critical voice. Built as a single TypeScript file, the tool runs on AWS using Amazon Bedrock's Nova Lite model, an AgentCore hosted endpoint, and a Lambda proxy to handle browser requests securely. The developer notes that crafting the AI personality via a system prompt was straightforward, while setting up a publicly accessible streaming endpoint on AWS proved to be the more technically challenging aspect. A random code sample feature allows users to experience a roast without submitting their own code.

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