The goal of ctxR is to provide R users a set of functions to access the CTX APIs without requiring extensive experience interacting directly with APIs.

You can install the development version of ctxR like so:

if (!library(devtools, logical.return = TRUE)){
  install.packages(devtools)
  library(devtools)
}

devtools::install_gitub("USEPA/ctxR")

You can install from CRAN using the following:

install.packages('ctxR')

Disclaimer: You won’t need a API key to install the ctxR package, but will need to supply an API key to use ctxR. Please visit CTX APIs to request an API key.