Meerkat is a modular, high-performance agent harness designed for building automated AI systems. It offers a library-first approach, allowing developers to embed Rust crates and leverage a shared runtime for seamless integration across various surfaces, including CLI, REST, and web. Key features include state management, multi-agent coordination, and customizable tool execution, making it suitable for complex applications that require programmatic control over lifecycle and events.

With support for multiple AI providers such as OpenAI and Anthropic, Meerkat facilitates structured output, durable scheduling, and real-time collaboration through its unique session and realm binding system. Its efficient design ensures fast cold starts and low memory usage, while the modular architecture allows developers to tailor the agent's capabilities to fit specific needs, whether for embedded systems or browser-based applications.