diff --git a/binarylane/lib/common.sh b/binarylane/lib/common.sh
index 93585d77..c1c97bbe 100644
--- a/binarylane/lib/common.sh
+++ b/binarylane/lib/common.sh
@@ -72,9 +72,10 @@ binarylane_register_ssh_key() {
     local pub_path="$2"
     local pub_key
     pub_key=$(cat "$pub_path")
-    local json_pub_key
+    local json_pub_key json_name
     json_pub_key=$(json_escape "$pub_key")
-    local register_body="{\"name\":\"$key_name\",\"public_key\":$json_pub_key}"
+    json_name=$(json_escape "$key_name")
+    local register_body="{\"name\":$json_name,\"public_key\":$json_pub_key}"
     local register_response
     register_response=$(binarylane_api POST "/account/keys" "$register_body")
 
diff --git a/cherry/lib/common.sh b/cherry/lib/common.sh
index ae86cbc8..a1a13409 100755
--- a/cherry/lib/common.sh
+++ b/cherry/lib/common.sh
@@ -87,9 +87,10 @@ cherry_register_ssh_key() {
     local pub_path="$2"
     local pub_key
     pub_key=$(cat "$pub_path")
-    local json_pub_key
+    local json_pub_key json_name
     json_pub_key=$(json_escape "$pub_key")
-    local register_body="{\"label\":\"$key_name\",\"key\":$json_pub_key}"
+    json_name=$(json_escape "$key_name")
+    local register_body="{\"label\":$json_name,\"key\":$json_pub_key}"
     local register_response
     register_response=$(cherry_api POST "/ssh-keys" "$register_body")
 
diff --git a/civo/lib/common.sh b/civo/lib/common.sh
index 483848e8..ee0fa599 100644
--- a/civo/lib/common.sh
+++ b/civo/lib/common.sh
@@ -64,9 +64,10 @@ civo_register_ssh_key() {
     local pub_path="$2"
     local pub_key
     pub_key=$(cat "$pub_path")
-    local json_pub_key
+    local json_pub_key json_name
     json_pub_key=$(json_escape "$pub_key")
-    local register_body="{\"name\":\"$key_name\",\"public_key\":$json_pub_key}"
+    json_name=$(json_escape "$key_name")
+    local register_body="{\"name\":$json_name,\"public_key\":$json_pub_key}"
     local register_response
     register_response=$(civo_api POST "/sshkeys" "$register_body")
 
diff --git a/contabo/lib/common.sh b/contabo/lib/common.sh
index 237b97aa..49472dc3 100644
--- a/contabo/lib/common.sh
+++ b/contabo/lib/common.sh
@@ -111,9 +111,10 @@ contabo_register_ssh_key() {
     local pub_path="$2"
     local pub_key
     pub_key=$(cat "$pub_path")
-    local json_pub_key
+    local json_pub_key json_name
     json_pub_key=$(json_escape "$pub_key")
-    local register_body="{\"name\":\"$key_name\",\"type\":\"ssh\",\"value\":$json_pub_key}"
+    json_name=$(json_escape "$key_name")
+    local register_body="{\"name\":$json_name,\"type\":\"ssh\",\"value\":$json_pub_key}"
     local register_response
     register_response=$(contabo_api POST "/compute/secrets" "$register_body")
 
diff --git a/digitalocean/lib/common.sh b/digitalocean/lib/common.sh
index 77387959..63b84f0d 100755
--- a/digitalocean/lib/common.sh
+++ b/digitalocean/lib/common.sh
@@ -74,9 +74,10 @@ do_register_ssh_key() {
     local pub_path="$2"
     local pub_key
     pub_key=$(cat "$pub_path")
-    local json_pub_key
+    local json_pub_key json_name
     json_pub_key=$(json_escape "$pub_key")
-    local register_body="{\"name\":\"$key_name\",\"public_key\":$json_pub_key}"
+    json_name=$(json_escape "$key_name")
+    local register_body="{\"name\":$json_name,\"public_key\":$json_pub_key}"
     local register_response
     register_response=$(do_api POST "/account/keys" "$register_body")
 
diff --git a/gcp/lib/common.sh b/gcp/lib/common.sh
index 5e3f3225..37f40ed8 100644
--- a/gcp/lib/common.sh
+++ b/gcp/lib/common.sh
@@ -108,11 +108,15 @@ create_server() {
 
     log_step "Creating GCP instance '${name}' (type: ${machine_type}, zone: ${zone})..."
 
-    local userdata
-    userdata=$(get_cloud_init_userdata)
     local pub_key
     pub_key=$(cat "${HOME}/.ssh/id_ed25519.pub")
 
+    # Write startup script to a temp file to avoid --metadata comma delimiter issues
+    local startup_script_file
+    startup_script_file=$(mktemp)
+    track_temp_file "${startup_script_file}"
+    get_cloud_init_userdata > "${startup_script_file}"
+
     local gcloud_err
     gcloud_err=$(mktemp)
     track_temp_file "${gcloud_err}"
@@ -122,7 +126,8 @@ create_server() {
         --machine-type="${machine_type}" \
         --image-family="${image_family}" \
         --image-project="${image_project}" \
-        --metadata="startup-script=${userdata},ssh-keys=${GCP_USERNAME}:${pub_key}" \
+        --metadata-from-file="startup-script=${startup_script_file}" \
+        --metadata="ssh-keys=${GCP_USERNAME}:${pub_key}" \
         --project="${GCP_PROJECT}" \
         --quiet \
         >/dev/null 2>"${gcloud_err}"; then
diff --git a/genesiscloud/lib/common.sh b/genesiscloud/lib/common.sh
index 13df1ffa..8e069a17 100644
--- a/genesiscloud/lib/common.sh
+++ b/genesiscloud/lib/common.sh
@@ -72,9 +72,10 @@ genesis_register_ssh_key() {
     local pub_path="$2"
     local pub_key
     pub_key=$(cat "$pub_path")
-    local json_pub_key
+    local json_pub_key json_name
     json_pub_key=$(json_escape "$pub_key")
-    local register_body="{\"name\":\"$key_name\",\"value\":$json_pub_key}"
+    json_name=$(json_escape "$key_name")
+    local register_body="{\"name\":$json_name,\"value\":$json_pub_key}"
     local register_response
     register_response=$(genesis_api POST "/ssh-keys" "$register_body")
 
diff --git a/hetzner/lib/common.sh b/hetzner/lib/common.sh
index 85c146ce..3ef0333d 100755
--- a/hetzner/lib/common.sh
+++ b/hetzner/lib/common.sh
@@ -68,9 +68,10 @@ hetzner_register_ssh_key() {
     local pub_path="$2"
     local pub_key
     pub_key=$(cat "$pub_path")
-    local json_pub_key
+    local json_pub_key json_name
     json_pub_key=$(json_escape "$pub_key")
-    local register_body="{\"name\":\"$key_name\",\"public_key\":$json_pub_key}"
+    json_name=$(json_escape "$key_name")
+    local register_body="{\"name\":$json_name,\"public_key\":$json_pub_key}"
     local register_response
     register_response=$(hetzner_api POST "/ssh_keys" "$register_body")
 
diff --git a/hostinger/lib/common.sh b/hostinger/lib/common.sh
index 574707e7..579cd49a 100644
--- a/hostinger/lib/common.sh
+++ b/hostinger/lib/common.sh
@@ -74,9 +74,10 @@ hostinger_register_ssh_key() {
     local pub_path="$2"
     local pub_key
     pub_key=$(cat "$pub_path")
-    local json_pub_key
+    local json_pub_key json_name
     json_pub_key=$(json_escape "$pub_key")
-    local register_body="{\"name\":\"$key_name\",\"public_key\":$json_pub_key}"
+    json_name=$(json_escape "$key_name")
+    local register_body="{\"name\":$json_name,\"public_key\":$json_pub_key}"
     local register_response
     register_response=$(hostinger_api POST "/ssh-keys" "$register_body")
 
diff --git a/hostkey/lib/common.sh b/hostkey/lib/common.sh
index 1e1d8d7b..3aa3b4fe 100644
--- a/hostkey/lib/common.sh
+++ b/hostkey/lib/common.sh
@@ -79,10 +79,11 @@ hostkey_register_ssh_key() {
     local pub_path="$2"
     local pub_key
     pub_key=$(cat "$pub_path")
-    local json_pub_key
+    local json_pub_key json_name
     json_pub_key=$(json_escape "$pub_key")
+    json_name=$(json_escape "$key_name")
 
-    local register_body="{\"name\":\"$key_name\",\"public_key\":$json_pub_key}"
+    local register_body="{\"name\":$json_name,\"public_key\":$json_pub_key}"
     local register_response
     register_response=$(hostkey_api POST "/ssh_keys" "$register_body")
 
@@ -243,7 +244,9 @@ destroy_server() {
 
     log_step "Destroying instance $instance_id..."
     local response
-    response=$(hostkey_api POST "/eq/terminate" "{\"id\":\"$instance_id\"}")
+    local json_id
+    json_id=$(json_escape "$instance_id")
+    response=$(hostkey_api POST "/eq/terminate" "{\"id\":$json_id}")
 
     if echo "$response" | grep -qi "error"; then
         log_error "Failed to destroy instance: $response"
diff --git a/linode/lib/common.sh b/linode/lib/common.sh
index f4eea909..9fe02319 100644
--- a/linode/lib/common.sh
+++ b/linode/lib/common.sh
@@ -71,9 +71,10 @@ linode_register_ssh_key() {
     local pub_path="$2"
     local pub_key
     pub_key=$(cat "$pub_path")
-    local json_pub_key
+    local json_pub_key json_name
     json_pub_key=$(json_escape "$pub_key")
-    local register_body="{\"label\":\"$key_name\",\"ssh_key\":$json_pub_key}"
+    json_name=$(json_escape "$key_name")
+    local register_body="{\"label\":$json_name,\"ssh_key\":$json_pub_key}"
     local register_response
     register_response=$(linode_api POST "/profile/sshkeys" "$register_body")
 
diff --git a/vultr/lib/common.sh b/vultr/lib/common.sh
index 5a466399..2d8c972d 100755
--- a/vultr/lib/common.sh
+++ b/vultr/lib/common.sh
@@ -71,9 +71,10 @@ vultr_register_ssh_key() {
     local pub_path="$2"
     local pub_key
     pub_key=$(cat "$pub_path")
-    local json_pub_key
+    local json_pub_key json_name
     json_pub_key=$(json_escape "$pub_key")
-    local register_body="{\"name\":\"$key_name\",\"ssh_key\":$json_pub_key}"
+    json_name=$(json_escape "$key_name")
+    local register_body="{\"name\":$json_name,\"ssh_key\":$json_pub_key}"
     local register_response
     register_response=$(vultr_api POST "/ssh-keys" "$register_body")