# API Reference
Entry page for [Full API](reference/index) documentation.

## Core Packages

| Package | Description | 
| --- | --- | 
| [`plesty.lib.data`](reference/plesty/lib/data/index) | Data containers, units, and type helpers 
| [`plesty.lib.device`](reference/plesty/lib/device/index) | Base device model, parameter/function systems, async wrappers |
| [`plesty.lib.traffic`](reference/plesty/lib/traffic/index) | Transport backends (TCP/IP, VISA, Serial) |
| [`plesty.lib.solver`](reference/plesty/lib/solver/index) | Command and operation solvers |
| [`plesty.lib.service`](reference/plesty/lib/service/index) | TCP/IP server/client and service builders |
| [`plesty.lib.sim`](reference/plesty/lib/sim/index) | Synthetic data generation for testing |
| [`plesty.lib.utils`](reference/plesty/lib/utils/index) | Shared utilities (env settings loader, logging, errors, registry, DLL helpers) |
| [`plesty.lib.test`](reference/plesty/lib/test/index) | Test helpers |