L5a: Observability

Module: M5 Production
Files: starter.py, solution.py

Objective

Trace every tool call + LLM completion to SQLite.

Concepts

Refer to the corresponding module for full concept explanations.

Starter

cd course/labs/l5-observability/
# Open starter file and fill in the TODOs

Checkpoints

1. Define SQLite schema for tool_calls and llm_completions
2. Implement ObservabilityTracker class
3. Log tool calls with params, result, duration
4. Log LLM completions with token counts and cost
5. Generate session summary report

Solution

Compare against the solution file after attempting the starter.