Mock sample for your project: Medium.com - Unofficial API Spec

Note that we now highly recommend new customers to use Retail API, which incorporates the GA version of the Recommendations AI funtionalities. To enable Retail API, please visit https://console.cloud.google.com/apis/library/retail.googleapis.com. The Recommendations AI 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.

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!

The Flat API allows you to easily extend the abilities of the Flat Platform, with a wide range of use cases including the following:
Creating and importing new music scores using MusicXML, MIDI, Guitar Pro (GP3, GP4, GP5, GPX, GP), PowerTab, TuxGuitar and MuseScore files
Browsing, updating, copying, exporting the user's scores (for example in MP3, WAV or MIDI)
Managing educational resources with Flat for Education: creating & updating the organization accounts, the classes, rosters and assignments.
The Flat API is built on HTTP. Our API is RESTful It has predictable resource URLs. It returns HTTP response codes to indicate errors. It also accepts and returns JSON in the HTTP body.
The schema of this API follows the OpenAPI Initiative (OAI) specification, you can use and work with compatible Swagger tools.
This API features Cross-Origin Resource Sharing (CORS) implemented in compliance with W3C spec.
You can use your favorite HTTP/REST library for your programming language to use Flat's API. This specification and reference is available on Github.
Getting Started and learn more:
API Overview and introduction
Authentication (Personal Access Tokens or OAuth2)
SDKs
Rate Limits
Changelog

The ART19 Content API conforms to the JSON:API specification.
API requests MUST use the HTTP Accept header:
Accept: application/vnd.api+json
API requests MUST be authenticated using the HTTP Authorization header:
Authorization: Token token="your-token", credential="your-credential"
General Notes
Some query parameters use unencoded [ and ] characters simply for readability. Defaults, examples, and
possible values are additionally rendered in double quotes for readability. In practice, query parameters should
not have quotes around the values (e.g., foo=bar is valid, not foo="bar"), and both query parameter keys
and values must be percent-encoded, per the requirements in RFC 3986 § 3.4.
Rate Limiting
In order to provide a fair distribution of available resources, all API calls are subject to rate limits.
If you exceed the number of API calls per minute granted to your credential, a 429 Too Many Requests
error response will be returned.
In that case, a Retry-After header MAY be included in the response, describing the number of seconds
after which a request can be retried.
If you run into a high number of 429 errors, please reach out to ART19 Support to adjust your rate limit.
Example
In the following example the request can be retried after waiting for 21 seconds:
HTTP/1.1 429 Too Many Requests
Content-Type: text/html
Retry-After: 21
Pagination
Requests to collection endpoints SHOULD provide pagination parameters.
Some endpoints REQUIRE pagination parameters to be provided.
Whenever pagination is provided, it MUST be valid.
Failing to provide pagination when it is required or providing wrong or incomplete pagination
always results in a 400 Bad Request error response.
The page numbering starts with 1 and the maximum page size (if not otherwise documented
on an endpoint) is 100. Pagination MUST NOT be specified if requesting a list of IDs (using an ids[] parameter).
Providing invalid values for page number or page size, as well as providing only a page number or only a page size,
is considered an error. Pagination is provided like this:
page[number]=1&page[size]=25
Responses conform to the JSON:API specification's pagination section
by including pagination links. Your requested page size will be carried into the pagination links.
Sorting
Requests to collection endpoints usually accept a sort parameter. Please refer to the
JSON:API Specification's sorting section for further details.
Relationship Linking
Currently, resources return all of their relationships, in no particular order, pursuant to how relationships
should be returned according to the JSON:API specification. Consumers of this API
MUST NOT make assumptions about the order of these collections. Even though this data is not currently paginated, consumers MUST support
paginating relationships per the JSON:API specification if this data is important for their application.

Views and manages your Google Analytics data.

This is the place to come for all the technical details you need to power your applications with Channel 4's deep programmes data.

Manages permission levels and related settings of a group.

Generates performance reports, generates ad codes, and provides publisher management capabilities for AdSense Hosts.

The Android Management API provides remote enterprise management of Android devices and apps.

Manages Apache Airflow environments on Google Cloud Platform.