Overview

Pay-i instrumentation captures your GenAI provider calls and sends cost, token, and latency telemetry to Pay-i. Call payi_instrument() once at application startup. Then use @track or track_context() to add scoped metadata such as use cases, users, and limits.

Function	Purpose
`payi_instrument()`	Initialize instrumentation at startup and set global defaults
`@track`	Annotate a function with metadata such as `use_case_name` and `limit_ids`
`track_context()`	Annotate a block of code with runtime values such as `user_id` and `use_case_step`