What I Learned Building a Lightweight Local AI Agent

Short summary

openLight is a lightweight personal-server operations layer built in Go. The author shares three core architecture decisions: a multi-layer router that handles semantic intent without invoking the LLM (critical on constrained hardware); a unified skill surface so manual and automated actions run the same validated code path; and moving permission checks into code rather than delegating to the LLM. The patterns suggest prioritizing structural constraints over generic flexibility.

• •Multi-layer router with semantic intent handling before LLM invocation—critical for low-latency performance on constrained hardware
• •Unified skill surface: manual and automatic actions execute the same validated Go code path, eliminating permission-level distinctions
• •Permissions live in code, not delegated to the LLM—the model is a classifier of intent, not a holder of permissions

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