UTCP Agent
Build tool-calling agents in 4 lines of code
2025-08-31

Open-source SDK which allows you to build custom agents with any tool or native endpoint, using just 4 lines of code. UTCP has collectively over 1k GitHub stars, over 5k downloads, and is trusted by engineers at AWS, Microsoft, NVIDIA, and more.
UTCP Agent is an open-source SDK that enables developers to create tool-calling agents with minimal code. Using just four lines, users can integrate custom tools or native endpoints without building wrapper servers. It supports multiple communication protocols like HTTP, CLI, and WebSockets through a modular, plugin-based architecture. The framework includes key components such as Manuals for tool definitions, Tools for capabilities, Call Templates for API mapping, and a UtcpClient for execution. This direct, descriptive approach simplifies agent-tool interaction while leveraging existing authentication and infrastructure. Trusted by engineers at top tech firms, UTCP offers scalability, security, and ease of use for diverse applications.
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