# LLMS.txt for thesys.dev # Learn more: https://llmstxt.org # Default policy for all LLMs User-Agent: * Allow: / # Thesys > Thesys is a developer platform for building generative UI applications. > It assists in creating visually stunning chat interfaces for AI agents, enabling teams to ideate, visualize, and ship highly engaging AI software, faster. > Generative UI (Generative User Interface) refers to interfaces that are dynamically generated by leveraging AI technologies, particularly large language models (LLMs) and generative models. These interfaces adapt to user inputs, context, and preferences, creating a more personalized, intuitive, and engaging user experience. ## Overview There are two major components for building a generative UI application with Thesys: - API - C1 is Thesys's flagship Generative UI API that leverages the power of LLMs to generate UI on the fly. - Frontend - Crayon is an open source, MIT licensed React framework that integrates well with C1 and allows end users to interact with a live app. ## The Generative UI (GenUI) API C1 by Thesys is a Generative UI API that enables the creation of dynamic, intelligent interfaces. Developers can use C1 to build AI interfaces either by: - Replacing the presentational layer LLM with a C1 endpoint, which is the preferred method when building a new application as it introduces the least amount of latency and cost. - Adding a layer of UI generation to existing LLM workflows by visualizing outputs, which is useful for presenting users with a more engaging interface than a simple text output. ## The Frontend Framework C1 by Thesys React SDK is built on top of Crayon - an open source, MIT licensed React framework for shipping production-ready stunning generative applications. It is designed to integrate seamlessly with C1 but has no dependencies on Thesys and can be used with any LLM or API. ## Docs - [Thesys Docs](https://docs.thesys.dev): A comprehensive guide to using Thesys. - [Getting Started](https://docs.thesys.dev/guides/setup): Initial setup guide for Thesys. - [C1 Embed Endpoint](https://docs.thesys.dev/api-reference/endpoints/embed): An OpenAI compatible endpoint that generates UI instead of text. - [C1 Visualize Endpoint](https://docs.thesys.dev/api-reference/endpoints/visualize): An OpenAI compatible endpoint that generates UI representation of data passed to it. - [Build a ChatGPT like app](https://docs.thesys.dev/guides/solutions/chat): Tutorial for building chat solutions. - [Crayon Docs](https://crayonai.org/): A comprehensive guide to using Crayon.