> For the complete documentation index, see [llms.txt](https://docs.teller.org/teller-1/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.teller.org/teller-1/contracts.md).

# Contracts

- [Node Network](https://docs.teller.org/teller-1/contracts/overview.md): General overview of off-chain engagements for on-chain contracts.
- [Price Oracles](https://docs.teller.org/teller-1/contracts/price-oracles.md): Overview description of how price oracles are used with in the Teller protocol
- [Settings.sol](https://docs.teller.org/teller-1/contracts/settings.sol.md): Defines the rules for the Teller Protocol.
- [LoansBase.sol](https://docs.teller.org/teller-1/contracts/loansbase.sol.md): Base contract that describes how to interact with a Loan.
- [Consensus.sol](https://docs.teller.org/teller-1/contracts/consensus.sol.md): Base contract for validating consensus for interest and loan terms.
- [Gas usage](https://docs.teller.org/teller-1/contracts/gas-usage.md): We collected the main list of functions available for users and calculated how much gas would use each of those functions.