Calculator API - Instructions
We created an API version of the Server Side Calculator API. This offers more features.
About App
We’ve documented the API in three different ways.
When working with APIs you may be lucky enough to get an openapi specification which is well constructed with correct types and examples.
But you might also receive hand crafted documentation that might be ambiguous, incomplete or possibly out of date.
Like the Server Side Calculator the API can handle numbers or sentences as input e.g. “one thousand and three”
API Tools
Swagger and Redoc UIs depend on external library distributions so they may not always render properly. They can also have CORS issues where JavaScript is not allowed to communicate with the server.
API testing is usually best done with a dedicated tool.
You may want to use an API tool to help with this e.g.
We have a list of API tools on our apichallenges site with links to more practice APIs and tutorial content.