add placeholders

Author: brunopgalvao

.chain-interactions/query-data/query-sdks.md

@@ -20,6 +20,9 @@ This guide demonstrates how to query on-chain storage using five popular SDKs:
 
 Select your preferred SDK below to see complete, runnable examples that query Polkadot Hub for account balances and asset information.
 
+!!! note
+    Ensure to replace `INSERT_WS_ENDPOINT` with the proper WebSocket endpoint and `INSERT_ADDRESS` with the account address you want to query. For this example, you can use Polkadot Hub (`wss://polkadot-asset-hub-rpc.polkadot.io`).
+
 ## Query On-Chain Data
 
 === "PAPI"
@@ -315,7 +318,7 @@ Select your preferred SDK below to see complete, runnable examples that query Po
     3. Download the Polkadot Hub metadata:
 
         ```bash
-        subxt metadata --url wss://polkadot-asset-hub-rpc.polkadot.io -o asset_hub_metadata.scale
+        subxt metadata --url INSERT_WS_ENDPOINT -o asset_hub_metadata.scale
         ```
 
     4. Update `Cargo.toml` with the required dependencies:

.snippets/code/chain-interactions/query-data/query-sdks/dedot/package.json

@@ -2,13 +2,13 @@ import { DedotClient, WsProvider } from "dedot";
 import { hexToString } from "dedot/utils";
 import type { PolkadotAssetHubApi } from "@dedot/chaintypes";
 
-const ASSET_HUB_RPC = "wss://polkadot-asset-hub-rpc.polkadot.io";
+const ASSET_HUB_RPC = "INSERT_WS_ENDPOINT";
 
 // USDT on Polkadot Hub
 const USDT_ASSET_ID = 1984;
 
 // Example address to query asset balance
-const ADDRESS = "14E5nqKAp3oAJcmzgZhUD2RcptBeUBScxKHgJKU4HPNcKVf3";
+const ADDRESS = "INSERT_ADDRESS";
 
 async function main() {
   // Initialize provider and client with Asset Hub types

.snippets/code/chain-interactions/query-data/query-sdks/dedot/query-asset.ts

@@ -1,10 +1,10 @@
 import { DedotClient, WsProvider } from "dedot";
 import type { PolkadotAssetHubApi } from "@dedot/chaintypes";
 
-const ASSET_HUB_RPC = "wss://polkadot-asset-hub-rpc.polkadot.io";
+const ASSET_HUB_RPC = "INSERT_WS_ENDPOINT";
 
 // Example address to query (Polkadot Hub address)
-const ADDRESS = "14E5nqKAp3oAJcmzgZhUD2RcptBeUBScxKHgJKU4HPNcKVf3";
+const ADDRESS = "INSERT_ADDRESS";
 
 async function main() {
   // Initialize provider and client with Asset Hub types

.snippets/code/chain-interactions/query-data/query-sdks/dedot/query-balance.ts

@@ -3,13 +3,13 @@ import { getWsProvider } from "polkadot-api/ws-provider/node";
 import { withPolkadotSdkCompat } from "polkadot-api/polkadot-sdk-compat";
 import { pah } from "@polkadot-api/descriptors";
 
-const ASSET_HUB_RPC = "wss://polkadot-asset-hub-rpc.polkadot.io";
+const ASSET_HUB_RPC = "INSERT_WS_ENDPOINT";
 
 // USDT on Polkadot Hub
 const USDT_ASSET_ID = 1984;
 
 // Example address to query asset balance
-const ADDRESS = "14E5nqKAp3oAJcmzgZhUD2RcptBeUBScxKHgJKU4HPNcKVf3";
+const ADDRESS = "INSERT_ADDRESS";
 
 async function main() {
   // Create the client connection

.snippets/code/chain-interactions/query-data/query-sdks/dedot/tsconfig.json

@@ -3,10 +3,10 @@ import { getWsProvider } from "polkadot-api/ws-provider/node";
 import { withPolkadotSdkCompat } from "polkadot-api/polkadot-sdk-compat";
 import { pah } from "@polkadot-api/descriptors";
 
-const ASSET_HUB_RPC = "wss://polkadot-asset-hub-rpc.polkadot.io";
+const ASSET_HUB_RPC = "INSERT_WS_ENDPOINT";
 
 // Example address to query (Polkadot Hub address)
-const ADDRESS = "14E5nqKAp3oAJcmzgZhUD2RcptBeUBScxKHgJKU4HPNcKVf3";
+const ADDRESS = "INSERT_ADDRESS";
 
 async function main() {
   // Create the client connection