Best mock data AI tools

Middlerok is an AI-powered platform that generates production-ready API contracts and code, bridging frontend and backend development teams. It transforms requirements, screenshots, or wireframes into OpenAPI specifications, TypeScript types, and implementation guides, significantly reducing integration time and improving team synchronization.

AI Placeholder is a free, open-source API that leverages OpenAI's GPT-3.5-Turbo to generate realistic fake or dummy data for testing and prototyping. Developers can create highly customized datasets on-the-fly, from simple user lists to complex CRM deal data, simply by structuring an API request. It offers both a hosted version for immediate use and the option to self-host for greater control.