Introduction

Fido's REST APIs

The Fido API is organized around REST. Our API has predictable resource-oriented URLs, accepts form-encoded request bodies, returns JSON-encoded responses, and uses standard HTTP response codes, authentication, and verbs.

You can use the Fido API in test mode, which does not affect your live data. The API key you use to authenticate the request determines whether the request is a live mode or test mode.

The Fido API differs for every account as we release new versions and tailor functionality. Log in to see docs customized to your version of the API, with your test key and data.

What’s a REST API, anyway?

An API is an application programming interface - in short, it’s a set of rules that lets programs talk to each other, exposing data and functionality across the internet in a consistent format.

REST stands for Representational State Transfer. This is an architectural pattern that describes how distributed systems can expose a consistent interface. When people use the term ‘REST API,’ they are generally referring to an API accessed via HTTP protocol at a predefined set of URLs.

These URLs represent various resources - any information or content accessed at that location, which can be returned as JSON, HTML, audio files, or images. Often, resources have one or more methods that can be performed on them over HTTP, like GET, POST, PUT and DELETE.


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