Implementation patterns for QuickNode security basics using blockchain RPC endpoints and the QuickNode SDK.
quicknode-install-auth setupimport { ethers } from 'ethers';
const provider = new ethers.JsonRpcProvider(process.env.QUICKNODE_ENDPOINT);
const block = await provider.getBlockNumber();
console.log(`Connected at block ${block}`);
| Error | Cause | Solution |
|---|---|---|
| 401 Unauthorized | Invalid endpoint token | Verify URL from Dashboard |
| Rate limited | Too many requests | Implement backoff or upgrade plan |
| Method not found | Add-on required | Enable in QuickNode Dashboard |
See related QuickNode skills for more workflows.