How often is the OS Places API updated?

It is updated every day which is a great improvement from the 6 week cycle you normally get with the downloads of AddressBase data. Although it is updated daily it can take 3-5 working days for submitted data to make in into the API due to the validation process. Data frequency for Scotland and other islands might differ due to the delivery schedule.

In the OS Places API they have enabled filtering by custodians code. Is this coming in the Connector for OS Places API ?

This has been implemented in the release at the end of March 2023. You can now filter the API by custodian code(s), country or logical status. See our blog here

Can I search by postcode using the Connector for OS Places API?

Yes, you can search by postcode this was updated in the connector in August 2023. If you enter in a postcode it recognises this and goes to the postcode endpoint of the OS Places API and returns all of the addresses found at that postcode in order.

Can I use the OS Places API in ArcMap?

Yes you can, however some of the functionality such as the suggestions is not available in ArcMap. In order to use the OS Places API Connector within ArcMap you need to add it as a GIS Server connection. Entering in the Server URL as: https://services.esriuk.com/osplacesapi/arcgis/services/ and your ArcGIS Online organisational id as the username and your OS API Key as the password.

OS Places API in ArcMap