Show HN: Jo – AI-native language to catch prompt injection at compile-time

Category: devtools

Tags: programming-language, security, capability-based, ai-security, compile-time

Score: 7.5/10 (Innovation: 8, Technical: 8, Documentation: 8, Utility: 6)

Jo is a statically typed language that enforces capability-based security at compile time, designed to prevent prompt injection and unauthorized access in AI-generated code. It compiles to Ruby and Python, providing a novel approach to securing AI agent outputs through type-level capability tracking.

Target audience: backend devs, security engineers, AI platform developers

Repository: https://github.com/typescope/jo · Scala · Apache-2.0 · 7 stars

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