Mock sample for your project: Interzoid Convert Currency Rate API

This API provides geographic information for a global telephone number, including city and country information, primary languages spoken, and mobile device identification.

This API provides current weather information for US Cities, including temperatures, wind speeds, wind direction, relative humidity, and visibility.

This API provides validation information for email addresses to aid in deliverability. Syntax, existence of mail servers, and other tests are run to ensure delivery. Additional demographics are provided for the email address as well, including identifying generic, vulgar, education, government, or other entity type email addresses.

This API retrieves the current time for a city or geographic location around the globe.

This API provides area code information for a given telephone area code.

This API provides current weather information for US Cities, including temperatures, wind speeds, wind direction, relative humidity, and visibility.

This API provides a timed, browser-simulated page load function (or a measured API call) from the specified geography using a server from that geography.

This API provides a similarity key used to match with other similar country name data, including for purposes of deduplication, fuzzy matching, or merging of datasets. A much higher match rate will be achieved by matching on the algorithmically generated similarity key rather than the data itself.

This API provides a standard for country name for the purposes of standardizing country name data, improving query results, analytics, and data merging.

This API provides a standard for US and international cities for the purposes of standardizing city name data, improving query results, analytics, and data merging.

This API provides detailed information for a given zip code, including city, state, latitude, longitude, area size, and various population demographics.

This API retrieves the latest currency exchange rate, against the US Dollar, for the given three-letter international currency code. These currency rates are compiled from many global sources and are updated several times per day.

Airbyte Configuration API
https://airbyte.io.
This API is a collection of HTTP RPC-style methods. While it is not a REST API, those familiar with REST should find the conventions of this API recognizable.
Here are some conventions that this API follows:
All endpoints are http POST methods.
All endpoints accept data via application/json request bodies. The API does not accept any data via query params.
The naming convention for endpoints is: localhost:8000/{VERSION}/{METHODFAMILY}/{METHODNAME} e.g. localhost:8000/v1/connections/create.
For all update methods, the whole object must be passed in, even the fields that did not change.
Change Management:
The major version of the API endpoint can be determined / specified in the URL localhost:8080/v1/connections/create
Minor version bumps will be invisible to the end user. The user cannot specify minor versions in requests.
All backwards incompatible changes will happen in major version bumps. We will not make backwards incompatible changes in minor version bumps. Examples of non-breaking changes (includes but not limited to...):
Adding fields to request or response bodies.
Adding new HTTP endpoints.

Introduction
Api2Pdf is a powerful PDF generation API with no rate limits or file size constraints. Api2Pdf runs on AWS Lambda, a serverless architecture powered by Amazon to scale to millions of requests while being up to 90% cheaper than alternatives. Supports wkhtmltopdf, Headless Chrome, LibreOffice, and PDF Merge. You can also generate barcodes with ZXING (Zebra Crossing).
SDKs & Client Libraries
We've made a number of open source libraries available for the API
Python: https://github.com/api2pdf/api2pdf.python
.NET: https://github.com/api2pdf/api2pdf.dotnet
Nodejs: https://github.com/api2pdf/api2pdf.node
PHP: https://github.com/Api2Pdf/api2pdf.php
Ruby: (Coming soon)
Authorization
Create an account at portal.api2pdf.com to get an API key.
Authorize your API calls
GET requests, include apikey=YOUR-API-KEY as a query string parameter
POST requests, add Authorization to your header.
For more advanced usage and settings, see the API specification below.

This API provides detailed information for a given zip code, including city, state, latitude, longitude, area size, and various population demographics.

IP2WHOIS is a free tool to allow you to check WHOIS information for a particular domain, such as domain assigned owner contact information, registrar information, registrant information, location and much more.

Domain API (WHOIS, Check, Batch)

Introduction
This is the registry API for SwaggerHub. It allows you to access, manage, and update your APIs and Domains in SwaggerHub bypassing the Web application.
Authentication
Use your personal API Key: you can find it by visiting the API Key page.

Stack Exchange is a network of 130+ Q&A communities including Stack Overflow.

API of the Patch application on cloud.redhat.com
Syntax of the filtername] query parameters is described in [Filters documentation

Transform API Descriptions from/to various formats

Live API Documentation

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