diff --git a/README.md b/README.md
index 0fe118d..d0aa194 100644
--- a/README.md
+++ b/README.md
@@ -3,3 +3,17 @@
 [![Build Status](https://drone.autonomic.zone/api/badges/coop-cloud/abra-hetzner/status.svg?ref=refs/heads/main)](https://drone.autonomic.zone/coop-cloud/abra-hetzner)
 
 Hetzner plugin for `abra`.
+
+## Hacking
+
+You can read the Hetzner Cloud API docs (e.g. [locations endpoint](https://docs.hetzner.cloud/#locations)).
+
+Then you can make requests and see what comes out. These values can then fed into this plugin as configurables.
+
+```bash
+$ export API_TOKEN=<hetzner-api-token>
+$ curl -H "Authorization: Bearer $API_TOKEN" 'https://api.hetzner.cloud/v1/locations' | jq '.locations | .[] | .name'`
+"fsn1"
+"nbg1"
+"hel1"
+```