Introducing the new v0 API

Introduces the new v0 API, providing programmatic, headless access to v0's app-building agent. This API allows users to create chats from prompts or existing code (repos, ZIP archives), stream the agent's work (file edits, searches, tool calls), and render live previews. It supports synchronous, asynchronous, and streaming responses, and integrates with Vercel Sandbox for isolated execution. The API can be used to build white-labeled app builders, automate app changes via scripts or webhooks, and serve as a build tool for other agents. It offers multiple connection methods for agents (MCP, AI SDK, eve) and allows for connecting chats to Vercel projects for deployment and observability. Includes a migration guide for older API versions.