title	description	ms.custom	ms.date	ms.reviewer	ms.topic
How to: Use OData to Return-Obtain a JSON Document	Learn about how to use OData to obtain a JSON document	bap-template	01/28/2024	jswymer	conceptual

Using OData to Return or Obtain a JSON Document

You can publish a page as a web service and consume it using JavaScript Object Notation (JSON).

Obtain a document based on JSON

You can build applications that consume and display [!INCLUDEprod_short] data using JSON. This example assumes that you have registered and published a page web service in [!INCLUDEprod_short].
Start a supported web browser, such as Microsoft Edge. In the Address field, enter a URI in this format:
```
https://<Server>:<WebServicePort>/<ServerInstance>/ODataV4/<web service>?$format=json  
```
If [!INCLUDEserver] is running on the local computer and is using the default [!INCLUDEserver] instance and OData port, and you have published a web service that is based on page 21 that is called Customer, then the address is:
```
https://localhost:7048/BC230/ODataV4/Customer?$format=json  
```
This generates a text file that contains metadata and data from the web service. You can open the file from the browser, or you can save it to disk.

[!NOTE]
The value of the format attribute must be lowercase: ?$format=json.

If you want to consume the web service as JSON-P, you can add the ?$callback=<callback function name> parameter.

You can use a similar URI to return the web service as an AtomPub document, in which case the attribute is ?$format=atom. For more information, see Using OData to Return-Obtain an AtomPub Document.