Overview

Use these use-cases (with curl language examples) as a guide for your app development.

API Credentials

For all use-cases, you should have the following information (the following values are examples only):

Refer Account for detail on how to create an account with Sonde and obtained below client-id & client-secret.

client-id: 6lpo5bolnp4uda4n2is3u8tt2

client-secret: 1114assc3pnln1b2lngjjml6mkce3uw0q70mrv9pqphusfbgtq9a

domain: api.sondeservices.com

The Sonde Service API uses an access-token to authenticate requests. Generate a access-token using ‘client-credential’ (consists of “client-id” and “client-secret”).

Your 'client-credential' must be kept secure on your server (or preferably in secret storage at server side). Do not share your client-credential in publicly accessible areas (such as GitHub, client-side code, and so forth).

Obtain the access-token by following the steps below.

API call

Get <Base64EncodedString> using the below command

API response

Pass the “access_token” key value in the Authorization header of Sonde Service APIs.

The access_token will expire_in 3600 seconds.

The token_type is “Bearer” (this value is fixed).

For a list of supported scopes, please check the schema in the Authentication section of the API Documentation REST API Reference.

For a list of scopes required for Scoring refer to Authentication Scopes

Using the generated access-token, you can access Sonde Platform’s Services.

Example; if you want your device to upload a voice sample to the Sonde Platform using Storage Service, then you can share an access-token with the device having scope sonde-platform/storage.write to restrict the access and prevent the misuse of privileges your client-credential is carrying.

As a developer, I want to generate a Depressive Symptoms Risk score.

Score Depressive Symptoms Risk health condition with the Sonde Platform “Depressive Symptoms Risk” measure.

On your backend perform the below steps to get the score:

STEP 1: GET THE APPROPRIATE ACCESS-TOKEN
STEP 2: REGISTER A USER WITH SONDE HEALTH
STEP 3: GET THE S3 SIGNED URL TO UPLOAD YOUR AUDIO FILE
STEP 4: UPLOAD YOUR AUDIO FILE
STEP 5: ASK FOR THE EXPECTED MEASURE SCORE

Detailed explanation with curl examples of each step is given below.

STEP 1: GET THE APPROPRIATE ACCESS-TOKEN

Get the access-token with scopes sonde-platform/scores.write , sonde-platform/users.write and sonde-platform/storage.write.

Ensure your client-credentials are granted to these scopes during the registration/onboarding process with Sonde Health.

Response1:

STEP 2: REGISTER A USER WITH SONDE HEALTH

Use "access_token" to register a user. Put the value of access_token into the Authorization header (refer to the below curl command).

It is expected that your server will register the user with SondePlatform during user sign-up process.

Replace <access_token> with the value of the access_token attribute of Response1.

Response2:

Capture the userIdentifier, in the below response wiNODNXcm. This userIdentifier will be required while calling the /inference/score API in following steps.

Keep userIdentifier in your UserManagement module (or database) to later use it for same patient.
userIdentifier will be used in STEP 3 .

STEP 3: GET THE S3 SIGNED URL TO UPLOAD YOUR AUDIO FILE

Call Storage Service to get the signed URL. In the Authorization header put the value of the access_token attribute from Response1 and the country-code in which you want to upload the wave file. (For supported country codes please check the REST API Reference).

For better measure accuracy it is recommended to upload the audio file which has the elicitation mentioned on page Vocal Biomarkers - Health Checks .

countryCode should be the country information which you have used while creating the account with Sonde Health.

Replace <userIdentifier> with the value of the userIdentifier attribute of Response2

Response3:

The response is shown for illustration purposes.

The signedURL is required in STEP 4.

The filePath is required in STEP 5

STEP 4: UPLOAD YOUR AUDIO FILE

Please find the sample audio file. Download it on your machine to try out the upload API

Open

Upload a local audio file to <signedURL>.

In the below curl command replace <audioFilePath> with your local file path and <signedURL> with the value of the signedURL attribute received in Response3.

You can expect the 20X response code for the above mentioned API.

STEP 5: ASK FOR EXPECTED MEASURE SCORE

Call the /inference/score API to get the Depressive Symptoms Risk score. Refer to the below curl command.

Replace <filePath> with the value of the path attribute of Response3 and <userIdentifier> with the value of userIdentifier attribute of Response2.

Response4:

The User’s Depressive Symptoms Risk score is 40 (for score and associated severity level please check Vocal Biomarkers - Health Checks ).