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

# Errors

> Problem Details error format.

Errors use RFC 9457 Problem Details with `application/problem+json`.

```json theme={null}
{
  "type": "https://wadial.com/problems/not_found",
  "title": "Not Found",
  "status": 404,
  "detail": "Session not found",
  "code": "not_found"
}
```

Validation errors include an `errors` array with field paths and messages.