The Crime Data API is a simple and easy-to-use JSON API that provides crime data in a particular neighborhood within any time range, allowing users to create a crime map and visualize the crimes in various geographical areas. The API is free, supports multiple programming languages such as Python, PHP, Ruby, and Javascript, and requires only a few lines of code to integrate into an application. It uses simple REST API logic to work, with authentication parameters included in the request header to validate the authenticity of the request. The API provides one endpoint, GET /crime, which returns an array of crime data objects containing the description of the crime, date and time the crime was committed or reported, and exact latitude and longitude of the crime location. The API can be used by application developers aiming to build crime data applications or websites, researchers in the field of crime data analysis, and anyone looking to build a crime map to give users more informative data about their neighborhood's safety.