> ## Documentation Index
> Fetch the complete documentation index at: https://docs.neuro-tech.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Pattern matching

> Understanding the schema notation used in examples

## Overview

Some endpoint pages include request and response schemas expressed with the
Neuron assignment pattern-matching notation. This makes it explicit which
fields are required, what types are expected, and any constraints.

## Common patterns

* `Required(Str(PUserName))`: required string value.
* `Optional(Int(PSeconds))`: optional integer value.
* `Required(Int(0 < PSeconds <= 3600))`: required integer with a range.
* `Optional(DateTime(PExpires))`: optional date-time value.

## How to read it

* The outer wrapper (`Required` or `Optional`) tells you if the field must be
  present.
* The inner type (`Str`, `Int`, `Bool`, `DateTime`) defines the expected type.
* Parameter names (`PUserName`, `PJwt`) map to the tables in the page.