Mock sample for your project: Spotify Web API

Allows developers to manage billing for their Google Cloud Platform projects programmatically.

The Cloud Storage for Firebase API enables programmatic management of Cloud Storage buckets for use in Firebase projects

Manages keys and performs cryptographic operations in a central cloud service, for direct use by other cloud resources and applications.

API v3 targets v2 functionality with a few minor additions. The API is accessible via https://api.thetvdb.com and provides the following REST endpoints in JSON format.
How to use this API documentation
You may browse the API routes without authentication, but if you wish to send requests to the API and see response data, then you must authenticate.
Obtain a JWT token by POSTing to the /login route in the Authentication section with your API key and credentials.
Paste the JWT token from the response into the "JWT Token" field at the top of the page and click the 'Add Token' button.
You will now be able to use the remaining routes to send requests to the API and get a response.
Language Selection
Language selection is done via the Accept-Language header. At the moment, you may only pass one language abbreviation in the header at a time. Valid language abbreviations can be found at the /languages route..
Authentication
Authentication to use the API is similar to the How-to section above. Users must POST to the /login route with their API key and credentials in the following format in order to obtain a JWT token.
{"apikey":"APIKEY","username":"USERNAME","userkey":"USERKEY"}
Note that the username and key are ONLY required for the /user routes. The user's key is labled Account Identifier in the account section of the main site.
The token is then used in all subsequent requests by providing it in the Authorization header. The header will look like: Authorization: Bearer . Currently, the token expires after 24 hours. You can GET the /refresh_token route to extend that expiration date.
Versioning
You may request a different version of the API by including an Accept header in your request with the following format: Accept:application/vnd.thetvdb.v$VERSION. This documentation automatically uses the version seen at the top and bottom of the page.

Provides access to information about profiles and contacts.

Publishes 360 photos to Google Maps, along with position, orientation, and connectivity metadata. Apps can offer an interface for positioning, connecting, and uploading user-generated Street View images.

Verifies ownership of websites or domains with Google.

Manages classes, rosters, and invitations in Google Classroom.

Registers, manages, indexes, and searches beacons.

The cloud asset API manages the history and inventory of cloud resources.

BBC Nitro is the BBC's application programming interface (API) for BBC Programmes Metadata.

Allows external bidders to manage their RTB integration with Google. This includes managing bidder endpoints, QPS quotas, configuring what ad inventory to receive via pretargeting, submitting creatives for verification, and accessing creative metadata such as approval status.