How to get latest block information?

Hi,guys,
I have read the [API DOC],can’t find anything about to get latest block,(Aptos REST API)
how should I do?

If your node is synced, and if I understand well the logic, you can see the latest block height by running the simple endpoint: https://fullnode.devnet.aptoslabs.com/v1.

Instead of this url you can check your Testnet Validator if it is already up, by doing this:
serverUrl/vi.
The response should be something like this. Where you can get the block height.

{"chain_id":43,"epoch":"80","ledger_version":"20792830","oldest_ledger_version":"0","block_height":"10364727","oldest_block_height":"0","ledger_timestamp":"1661598714180113","node_role":"validator"}

If something is wrong in my response let me know. I would be happy to learn about it.
thanks