Can I export my data?
Yup! You can find .csv and .tsv export links near the bottom of the Data tab below the graph.
You can also export data using the all-datapoints endpoint of the Beeminder API. If you have a lot of datapoints in your goal, please be conservative using this!
You can also provide a URL to which Beeminder will send POST requests anytime a new datapoint is added to the graph, if you want to maintain a live copy of your data. Add the URL to the Data Source setting under the Settings tab and hit Update Goal to save. This callback may fail silently; an occasional fetch of the all-datapoints endpoint mentioned above is a good idea to keep everything in sync.
How you might use the webhook feature: