LLM Lens is a blazing-fast, developer-first alternative to cloud AI observability platforms.

This package (llm-lens-daemon) runs a local Node.js background process that handles UDP/WebSocket ingestion of traces and aggregates them into a local SQLite database. It also serves the Next.js frontend dashboard where you can view your traces and run Autonomous Agentic Analysis to deeply debug failing LLM calls.

Usage

You don't even need to clone the repository. Just run the daemon globally using npx:

npx -y llm-lens-daemon@latest dashboard

This will spin up the SQLite database on localhost:7777 and open the beautiful observability dashboard at http://localhost:8493.

Instrumenting your code

To actually send traces to this daemon, you need to instrument your AI application using the llm-lens-sdk.

npm install llm-lens-sdk

For full documentation, visit the main repository.