> For the complete documentation index, see [llms.txt](https://docs.drivequant.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.drivequant.com/trip-analysis/ios/custom-metadata.md).

# Custom metadata

{% hint style="warning" %}
Metadata is persisted, so if you want to send it only for one trip, you need to remove it at the end of the trip, on the [`sdkStateChanged(state: State)`](/trip-analysis/ios/triplistener.md)callback, by checking if `state` is `inactive`.
{% endhint %}

## Set metadata

You can add additional metadata to your trip by calling the following method:

```swift
let metadata: [String: String] = [
    "key": "value"
]
DriveKitTripAnalysis.shared.setTripMetadata(metadata)
```

The metadata must be represented as a key/value object where the key and value have a String type.

The metadata can be set any time before the end of a trip.

If metadata is sent, it will also be added to the push data request in the metaData field.

## Get metadata

It is possible to get a copy of configured metadata thanks to the following method on DriveKitTripAnalysis:

```swift
DriveKitTripAnalysis.shared.getTripMetadata()
```

{% hint style="info" %}
Note: Any modification on the returned object has no effect on the metadata sent with a trip.
{% endhint %}

## Update metadata

To update a value in metadata, call the following method:

```swift
DriveKitTripAnalysis.shared.updateTripMetadata(key: String, value: String?)
```

## Delete a specific metadata

To delete a specific value in metadata, call the following method:

```swift
DriveKitTripAnalysis.shared.deleteTripMetadata(key: String)
```

## Delete all metadata

To delete all values in metadata, call this method:

```swift
DriveKitTripAnalysis.shared.deleteTripMetadata()
```


---

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