> For the complete documentation index, see [llms.txt](https://docs.algebra.finance/algebra-integral-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery.md).

# V1.9 (Directional Fees) - Periphery

- [AlgebraInterfaceMulticall](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/algebrainterfacemulticall.md)
- [ERC721Permit](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/erc721permit.md)
- [IERC20Metadata](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/ierc20metadata.md)
- [IERC20PermitAllowed](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/ierc20permitallowed.md)
- [IERC721Permit](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/ierc721permit.md)
- [IERC1271](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/ierc1271.md)
- [IMulticall](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/imulticall.md)
- [INonfungiblePositionManager](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/inonfungiblepositionmanager.md)
- [INonfungibleTokenPositionDescriptor](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/inonfungibletokenpositiondescriptor.md)
- [IPeripheryImmutableState](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/iperipheryimmutablestate.md)
- [IPeripheryPayments](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/iperipherypayments.md)
- [IPeripheryPaymentsWithFee](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/iperipherypaymentswithfee.md)
- [IPoolInitializer](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/ipoolinitializer.md)
- [IQuoter](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/iquoter.md)
- [IQuoterV2](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/iquoterv2.md)
- [ISelfPermit](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/iselfpermit.md)
- [ISwapRouter](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/iswaprouter.md)
- [ITickLens](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/iticklens.md)
- [IV3Migrator](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/iv3migrator.md)
- [IWNativeToken](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/iwnativetoken.md)
- [LiquidityManagement](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/liquiditymanagement.md)
- [Multicall](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/multicall.md)
- [NFTDescriptor](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/nftdescriptor.md)
- [NonfungiblePositionManager](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/nonfungiblepositionmanager.md)
- [NonfungibleTokenPositionDescriptor](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/nonfungibletokenpositiondescriptor.md)
- [PeripheryImmutableState](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/peripheryimmutablestate.md)
- [PeripheryPayments](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/peripherypayments.md)
- [PeripheryPaymentsWithFee](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/peripherypaymentswithfee.md)
- [PoolInitializer](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/poolinitializer.md)
- [Quoter](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/quoter.md)
- [QuoterV2](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/quoterv2.md)
- [SelfPermit](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/selfpermit.md)
- [SwapRouter](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/swaprouter.md)
- [TickLens](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/ticklens.md)
- [V3Migrator](https://docs.algebra.finance/algebra-integral-documentation/algebra-v1-technical-reference/contracts/api-reference-v1.9-directional-fees/v1.9-directional-fees-periphery/v3migrator.md)