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

# Debug

## Fields

| Field                | Type                                                        | Required             | Description |
| -------------------- | ----------------------------------------------------------- | -------------------- | ----------- |
| `echo_upstream_body` | Dict\[str, *Nullable\[Any]*]                                | :heavy\_minus\_sign: | N/A         |
| `timings`            | [Optional\[components.Timings\]](../components/timings.mdx) | :heavy\_minus\_sign: | N/A         |