How to obtain all client ids and secrets associated with an API Application

1- You will need to obtain an org admin token using How to generate your Authorization Bearer token for Anypoint Platform KB.

2- You will need to obtain your organization id using How to know my Organization ID (Org ID) on the Anypoint Platform KB.

3- Make a call to following API to get list of applications and their versions: 

GET /organizations/{organizationId}/apis 
*note: you need to find apiId and version id in this request. You need to look for Versions under each api, as following:

"versions": [
                {
                    "audit": {
                        "created": {
                            "date": "2016-10-06T21:56:11.294Z"
                        },
                        "updated": {
                            "date": "2016-10-06T21:56:29.650Z"
                        }
                    },
                    "masterOrganizationId": "MASTER_ORG_ID",
                    "organizationId": "ORGANIZATION_ID",
                    "id": 12345,     <---- this is versionId
                    "apiId": 78995,  <---- this is apiId

4- Make a call to following api to get list of client applications (contracts) subscribed to your API Application for the apiId and versionId that you've obtained in step 3 : 

GET /organizations/{organizationId}/apis/{apiId}/versions/{apiVersionId}/contracts 
*note: You need to find applicationId of each contract in response.

5- Now you can use applicationId from step 4 and get client ID and secret by calling following API: 

GET /organizations/{organizationId}/applications/{applicationId} 
*note: now you can find clientId and clientSecret in response.

Sample curl command:
curl -v -H "Authorization: Bearer [YOUR_ACCESS_TOKEN] -X GET "https://anypoint.mulesoft.com/apiplatform/repository/v2/organizations/{organizationId}/applications/{applicationId}