Mock sample for your project: XKCD API

Perform common functions that are available on the Channel Services console at scale, like placing orders and viewing customer information

Obtains end-user authorization grants for use with other Google APIs.

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.

View Google Search Console data for your verified sites.

The My Business Q&A API allows questions and answers to be posted for specific listings.

Enables client applications to check web resources (most commonly URLs) against Google-generated lists of unsafe web resources. The Safe Browsing APIs are for non-commercial use only. If you need to use APIs to detect malicious URLs for commercial purposes – meaning “for sale or revenue-generating purposes” – please refer to the Web Risk API.

Description of Instagram RESTful API.
Current limitations:
Instagram service does not support cross origin headers
for security reasons, therefore it is not possible to use Swagger UI and make API calls directly from browser.
Modification API requests (POST, DELETE) require additional security scopes
that are available for Apps created on or after Nov 17, 2015 and
started in Sandbox Mode.
Consider the Instagram limitations for API calls that depends on App Mode.
Warning: For Apps created on or after Nov 17, 2015 API responses
containing media objects no longer return the data field in comments and likes nodes.
Last update: 2015-11-28

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

api.video is an API that encodes on the go to facilitate immediate playback, enhancing viewer streaming experiences across multiple devices and platforms. You can stream live or on-demand online videos within minutes.