Mock sample for your project: Rotten Tomatoes API

With the Freesound APIv2 you can browse, search, and retrieve information about Freesound users, packs, and the sounds themselves of course. You can find similar sounds to a given target (based on content analysis) and retrieve automatically extracted features from audio files, as well as perform advanced queries combining content analysis features and other metadata (tags, etc...). With the Freesound APIv2, you can also upload, comment, rate and bookmark sounds!

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.

Cloud Retail service enables customers to build end-to-end personalized recommendation systems without requiring a high level of expertise in machine learning, recommendation system, or Google Cloud.

Views Ad Experience Report data, and gets a list of sites that have a significant number of annoying ads.

Creates and manages builds on Google Cloud Platform.

Provides automatic management of network configurations necessary for certain services.

Registers and manages IoT (Internet of Things) devices that connect to the Google Cloud Platform.

A simple Google Example Library API.

The Fitness API for managing users' fitness tracking data.

Medium’s unofficial API documentation using OpenAPI specification.
Official API
Official API document can also be viewed for most up to date API spec at https://github.com/Medium/medium-api-docs.
Developer Blog - Welcome to the Medium API

Test our API services using I/O Docs.

Accesses the NoSQL document database built for automatic scaling, high performance, and ease of application development.