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

# Metadata

```ts theme={null}
type Metadata = Record<string, string>;
```

Defined in: [\_vendor/api/types/Metadata.ts:6](https://github.com/coinbase/cdp-sdk/blob/30d1b3dc350cd763fecf481c5bc976bd77951f3b/typescript/packages/cdp-sdk/src/_vendor/api/types/Metadata.ts#L6)

Optional metadata as key-value pairs. Use this to store additional structured information on a resource, such as customer IDs, order references, or any application-specific data. Up to 10 key/value pairs may be provided. Keys and values are both strings. Keys must be ≤ 40 characters; values must be ≤ 500 characters.