Forming a request

How you send requests to the Data Catalogue API will vary depending on the client or language you’re using. But the API still has behaviour and expectations that is common across all clients.

The examples in this section show how to use the popular curl command line tool.

Before you begin

Endpoint URLs

The Data Catalogue API is available on a per-workspace basis, so the subdomain is based on a combination of your organisation and workspace names. See How to get a workspace ID to find out how to get the exact hostname required. It will be in this format:


So your final endpoint URL will look something like:


Most endpoints use the POST method, even those that just fetch data. Ensure your HTTP client sends POST requests as appropriate.

Using curl, the -X POST flag specifies a POST request. Note that this is optional if you’re using the -d flag to send a payload (see below).

curl -X POST ...


For most methods, you’ll need to send a JSON object containing supported parameters. You’ll also need to set the appropriate content type for the payload you’re sending:

curl -H "Content-Type: application/json" ...
You must specify the content type of your payload. Failing to include this header will result in a 415 UNSUPPORTED MEDIA TYPE status code.

You can send data via a POST request using the curl flag -d. This should be followed by either a string of JSON data, or a string starting with the '@' symbol, followed by a filename containing the JSON data.

curl -d '{"key": "value"}' ...
curl -d "@data.json" ...

Complete curl example

You should structure most of your requests to the API around this pattern:

curl -H "Authorization: ${token}" \
     -H "Content-Type: application/json" \
     -d "@data.json" \