The Open Assistant API provides a comprehensive Python client and CLI tools to interact with the Open Assistant server, a self-hosted open-source conversational AI platform. By exposing endpoints for creating conversations, sending user prompts, streaming AI-generated replies, and capturing feedback on responses, it enables developers to orchestrate complex chat workflows. It supports connection configuration, authentication tokens, customizable model selection, and batched message handling. Whether deployed locally for privacy or connected to remote instances, the API offers full control over conversation state and logging, making it ideal for building, testing, and scaling ChatGPT-style assistants across various applications.