# Richardson Maturity Model

A four-level scale of how fully an API uses REST ideas.

## What is **Richardson Maturity Model**?

The **Richardson Maturity Model** grades how RESTful an API is: level 0 one endpoint, level 1 resources, level 2 HTTP methods and status codes, level 3 hypermedia links.

Level: Master · [More REST API terms at this level](https://www.ask-codey.com/glossary/subjects/rest-api/master)

Updated: September 27, 2026

Source: https://www.ask-codey.com/glossary/richardson-maturity-model