Show HN: Cortex – local-first encrypted memory for AI agents (Rust, MCP)

Category: infrastructure

Tags: memory-engine, ai-agent, rust, local-first, encrypted

Score: 7.8/10 (Innovation: 7, Technical: 8, Documentation: 9, Utility: 7)

Cortex is a local-first, encrypted memory engine for AI agents written in Rust that provides structured long-term memory with a 4-tier cognitive model, Bayesian belief updates, and sub-millisecond performance. It is interesting because it offers a comprehensive, privacy-preserving alternative to cloud-based memory solutions like Mem0 and OpenAI Memory, with advanced features like people graphs, contradiction detection, and cross-device sync via consumer cloud storage.

Target audience: backend devs, data engineers, ai-ml engineers, devops

Repository: https://github.com/gambletan/cortex · Rust · MIT · 16 stars

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