Hosted by the U.S. General Services Administration, the SFTool provides a range of sustainable building content for commercial architecture in easily consumable formats. Calls to the SFTools API can be made to return green-tips and material suggestions for various office-related and productive work spaces. The best-practice tips come in the form of paragraph chunks, and the materials are returned as individual keywords. The API may be accessed using the Content Pages, Spaces, Materials, and Tags method categories. All methods accept HTTP GET requests. The API is hosted publicly and does not require an API key or token for use.