Interact with Precompiles [Batch] Approve & Swap Tokens in a Single Transaction [Randomness] Create a Lottery [Call Permit] Send Gasless Transactions
![[Batch] Approve & Swap Tokens in a Single Transaction](/images/index-pages/tutorials/eth-api/batch-approve-swap.png)
![[Randomness] Create a Lottery](/images/index-pages/tutorials/eth-api/randomness-lottery.png)
![[Call Permit] Send Gasless Transactions](/images/index-pages/tutorials/eth-api/call-permit-gasless-txs.png)