Mock sample for your project: Twitter API

Twitter API v2 available endpoints

API Reference — Labs v2

API for GNU Social-compatible microblogging server

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

This is the REST API for trashnothing.com.
To learn more about the API or to register your app for use with the API
visit the trash nothing Developer page.
NOTE: All date-time values are UTC
and are in ISO 8601 format (eg. 2019-02-03T01:23:53).

Semantria applies Text and Sentiment Analysis to tweets, facebook posts, surveys, reviews or enterprise content.

Clubhouse API

Access Forem articles, users and other resources via API.
For a real-world example of Forem in action, check out DEV.
All endpoints that don't require authentication are CORS enabled.
Dates and date times, unless otherwise specified, must be in
the RFC 3339 format.

Social media management for marketers and agencies

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