UXC is a command-line interface designed to simplify interactions with various API protocols, including OpenAPI, MCP, GraphQL, gRPC, and JSON-RPC. It enables users to discover and invoke APIs with a consistent workflow, handling authentication and output formatting automatically. The tool is particularly useful for automation scripts and multi-provider workflows, allowing for structured output and predictable error handling across different systems. UXC supports a variety of authentication methods, including bearer tokens and API keys, making it versatile for real-world integrations.

The program emphasizes a discovery-first approach, allowing users to inspect available operations and their expected inputs before invocation. With features like daemon-backed session reuse, structured argument invocation, and a growing set of official skills for different applications, UXC aims to streamline the development process for agents and automation tools. Its JSON-first output and support for TypeScript integration further enhance its usability for developers looking to embed it into local applications.