Phosphorus is a free add-on and tool that functions similarly to Postman, specifically designed for the NEI Platform. It is available on the Chrome platform and is developed by nehzwd.

With Phosphorus, users can easily interact with the NEI Platform, making API requests and testing endpoints. The tool provides a user-friendly interface that allows developers to send various types of requests, including GET, POST, PUT, and DELETE. It also supports authentication methods such as OAuth 2.0 and basic authentication.

One of the standout features of Phosphorus is its ability to save and organize requests into collections, making it convenient for developers to manage and execute multiple requests efficiently. Additionally, the tool offers robust testing capabilities, allowing users to write test scripts and automate the validation of API responses.

Overall, Phosphorus is a valuable tool for developers working with the NEI Platform, providing them with a convenient and efficient way to interact with APIs and streamline their development process.