diff --git a/DNS-01-via-GoDaddy-API.md b/DNS-01-via-GoDaddy-API.md
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+++ b/DNS-01-via-GoDaddy-API.md
@@ -0,0 +1,32 @@
+    #!/usr/bin/env bash
+    
+    #
+    # dns-01 challenge through GoDaddy API.
+    # https://developer.godaddy.com/doc#!/_v1_domains
+    #
+    
+    set -e
+    set -u
+    set -o pipefail
+    
+    domain="<domain>"
+    apikey="<apikey>"
+    secret="<secret>"
+    TTL=300
+    
+    case "$1" in
+        "deploy_challenge")
+            curl -X PUT https://api.godaddy.com/v1/domains/$domain/records/TXT -H "Authorization: sso-key $apikey:$secret" -H "Content-Type: application/json" -d "[{\"name\": \"_acme-challenge.${2}\", \"ttl\": 600, \"data\": \"${4}\"}]"
+            ;;
+        "clean_challenge")
+            curl -X PUT https://api.godaddy.com/v1/domains/$domain/records/TXT -H "Authorization: sso-key $apikey:$secret" -H "Content-Type: application/json" -d "[{\"name\": \"_acme-challenge.${2}\", \"ttl\": 600, \"data\": \"--removed--\"}]"
+            ;;
+        "deploy_cert")
+            ;;
+        "unchanged_cert")
+            ;;
+        *)
+            echo Unknown hook "${1}"
+            exit 1
+            ;;
+    esac
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