diff --git a/reference-rpc-endpoint.json b/reference-rpc-endpoint.json
index eaf4be48..169068cf 100644
--- a/reference-rpc-endpoint.json
+++ b/reference-rpc-endpoint.json
@@ -1,4 +1,8 @@
 {
-    "8453": ["https://base.drpc.org"],
-    "1": ["https://eth.drpc.org"]
+    "base": {
+	"id": 8453,
+	"urls": ["https://base.drpc.org"]}
+    "eth": {
+	"id": 1,
+	"urls": ["https://eth.drpc.org"]}
 } 
diff --git a/reference-rpc-endpoint.sh b/reference-rpc-endpoint.sh
index 6be2633a..f18288e8 100755
--- a/reference-rpc-endpoint.sh
+++ b/reference-rpc-endpoint.sh
@@ -1,16 +1,14 @@
 #!/bin/bash
 
 # Check if the script is provided with the correct number of arguments
-if [ $# -lt 1 ] || [ $# -gt 2 ]; then
-    echo "Usage: $0 <key> [<index>]"
+if [ $# -ne 2 ]; then
+    echo "Usage: $0 <id> <index>"
     exit 1
 fi
 
-# Key provided as the first argument
-key="$1"
-
-# Set index to 0 if not provided as the second argument
-index="${2:-0}"
+# ID and index provided as arguments
+id="$1"
+index="$2"
 
 # Check if the JSON file exists
 json_file="reference-rpc-endpoint.json"
@@ -19,14 +17,27 @@ if [ ! -f "$json_file" ]; then
     exit 1
 fi
 
-# Use jq to extract the element of the array corresponding to the key and index
-element=$(jq -r ".$key[$index]" "$json_file")
+# Use jq to find the object with the provided id
+object=$(jq --arg id "$id" '.[] | select(.id == ($id | tonumber))' "$json_file")
 
-# Check if the key exists in the JSON file
-if [ "$element" = "null" ]; then
-    echo "Error: Key '$key' not found in the JSON file or index '$index' out of range."
+# Check if the object exists
+if [ -z "$object" ]; then
+    echo "Error: Object with ID '$id' not found."
     exit 1
 fi
 
-# Print the element
-echo "$element"
+# Extract the URLs array from the object
+urls=$(echo "$object" | jq -r '.urls')
+
+# Check if the index is out of range
+num_urls=$(echo "$urls" | jq -r 'length')
+if [ "$index" -ge "$num_urls" ]; then
+    echo "Error: Index '$index' is out of range for ID '$id'."
+    exit 1
+fi
+
+# Extract the URL at the specified index
+url=$(echo "$urls" | jq -r ".[$index]")
+
+# Print the URL
+echo "URL at index '$index' for ID '$id': $url"