diff --git a/instanceinfo.sh b/instanceinfo.sh
index 395db95..9759f79 100755
--- a/instanceinfo.sh
+++ b/instanceinfo.sh
@@ -1,4 +1,6 @@
 #!/bin/bash
+# Print some basic info about fediverse instances. Install json_pp for prettier
+# output.
 
 if [ -z "${1}" ]; then
     echo "usage: ${0} DOMAIN" >&2