belgie

If you are looking to write have you're agent write typescript code, check out: https://github.com/mplemay/belgie. TLDR: You're agent will get a isolated v8 runtime (chrome's sandboxed javascript runtime)

For the past couple of month, I have been building belgie (https://github.com/mplemay/belgie) with the goal of making it easy for agents to dynamically generate user interfaces / code in a sandboxed environment. At a high-level, it supports 1. Create React MCP UIs (and traditional Web UIs) from python without needing a JS runtime installed 2. Provides a deno backed typescript sandbox for agent generated code via pydantic-ai / langchain A great example use cases is automatically generating UIs for SQL query results.

Hi HN! I built Belgie, a Python library that embeds Deno, allowing Python applications to run JavaScript and TypeScript without requiring Node.js or Deno to be installed on the host system. It supports the features you’d expect from Deno (npm, JSR, and URL imports, isolated package environments, etc.), plus: - Pass JSON-safe values seamlessly between Python and JavaScript. - Agentic code generation with typed interfaces, similar to Pydantic’s Monty. - Manage dependencies programmatically or from the CLI.