# Genaral Info

Welcome to the Mercury docs! If you made it so far congrats, you're one step away from building amazing indexers on Stellar :)

* For custom indexers defined in no time inside your smart contracts head to [Retroshades](https://docs.mercurydata.app/retroshades/introduction-to-retroshades)
* For simple contract event and transaction queries go to [Classic](https://docs.mercurydata.app/mercury-classic/introduction)