A new programming language called Mog has emerged from the Show HN community, designed specifically for building AI agents with built-in safety and capability controls. The language features a comprehensive standard library covering everything from basic control flow and data structures to advanced async programming and error handling.

Mog introduces a unique capability system that restricts what scripts can do, requiring explicit declarations for file system access, process control, and other operations. This sandboxing approach aims to prevent AI agents from performing unintended or dangerous actions. The language also includes a full-featured compiler and embedding API, allowing Mog scripts to run within host applications like game servers or web services.

With 14 chapters of documentation covering everything from "Hello, World" to advanced async patterns, Mog positions itself as a complete solution for developers building autonomous software agents. The language supports modern features like closures, higher-order functions, and pattern matching while maintaining simplicity through its flat operator precedence model. Current status indicates the language is production-ready, with tools for embedding, capability validation, and resource limiting already implemented.