diff --git a/src/eth/client.json b/src/eth/client.json
index 2a0c2e2..2bbd84b 100644
--- a/src/eth/client.json
+++ b/src/eth/client.json
@@ -1,7 +1,7 @@
 [
 	{
 		"name": "eth_protocolVersion",
-		"summary": "Returns the current ethereum protocol version.",
+		"summary": "Returns the current Ethereum protocol version.",
 		"params": [],
 		"result": {
 			"name": "Protocol version",
@@ -11,6 +11,17 @@
 			}
 		}
 	},
+	{
+		"name": "eth_chainId",
+		"summary": "Returns the chain ID of the current network.",
+		"params": [],
+		"result": {
+			"name": "Chain ID",
+			"schema": {
+				"$ref": "#/components/schemas/uint"
+			}
+		}
+	},
 	{
 		"name": "eth_syncing",
 		"summary": "Returns an object with data about the sync status or false.",