diff --git a/README.md b/README.md
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+++ b/README.md
@@ -2,3 +2,33 @@ WideQ
 =====
 
 A library for interacting with the "LG SmartThinq" system, which can control heat pumps and such. I reverse-engineered the API from their mobile app.
+
+To try out the API, there is a simple command-line tool included here, called `example.py`.
+To use it, provide it with a country and language code via the `-c` and `-l` flags, respectively:
+
+    $ python3 example.py -c US -l en-US
+
+LG accounts seem to be associated with specific countries, so be sure to use the one with which you originally created your account.
+For Korean, for example, you'd use `-c KR -l ko-KR`.
+
+By default, the example just lists the devices associated with your account.
+You can also specify one of several other commands:
+
+* `ls`: List devices (the default).
+* `mon <ID>`: Monitor a device continuously, printing out status information until you type control-C. Provide a device ID obtained from listing your devices.
+* `ac-mon <ID>`: Like `mon`, but only for AC devices---prints out specific climate-related information in a more readable form.
+* `set-temp <ID> <TEMP>`: Set the target temperature for an AC device.
+* `turn <ID> <ONOFF>`: Turn an AC device on or off. Use "on" or "off" as the second argument.
+* `ac-config <ID>`: Print out some configuration information about an AC device.
+
+
+Credits
+-------
+
+This is by [Adrian Sampson][adrian].
+The license is [MIT][].
+I also made a [Home Assistant component][hass-smartthinq] that uses wideq.
+
+[hass-smartthinq]: https://github.com/sampsyo/hass-smartthinq
+[adrian]: https://github.com/sampsyo
+[mit]: https://opensource.org/licenses/MIT