Alaska Satellite Facility
Delivering Remote Sensing Data Since 1991

The chart below is a beginner's guide to using an API.

 Using the ASF API — Overview
Build an API command: Program+URL+keywords
For more details, see Build API Command
Selections Notes
1) Choose a program

Choose a command-line program to transfer data using a URL

Choose cURL or WGET

Construct command at the command line, or by using the Learn by Doing page

2) Use the ASF API URL

3) Choose
Define your search using keywords such as asfframe, absoluteOrbit, output. Choose keyword output's value based on intended use. See below.See the keyword list on the Learn by Doing page
Download, search or visualize — by including the appropriate Output  keyword value in the API command
For more details, see Search and Download.
UsesOutput Keyword Values
Helpful Software
JSONCustom script, JSON viewer

 VisualizeKMLGoogle Earth

Custom script, JSON viewer

 DownloadMETALINK (default)aria2 required

Custom script, direct download of URLs


Custom script, direct download of URLs

Note: A research agreement is required for access to JERS-1 and RADARSAT-1 data. Please complete the required Research Agreement, or contact user support at the link or number below.

Get SAR Data

Get SAR Data

Select and download SAR data online using Vertex.

Use the ASF API for downloading SAR data via a command line.