> For the complete documentation index, see [llms.txt](https://neby.gitbook.io/neby-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://neby.gitbook.io/neby-documentation/ecosystem/harvester.md).

# Harvester

#### Introduction

Uniswap V3 concentrated liquidity offers several advantages but requires more active management from liquidity providers (LPs). When a liquidity position earns fees, they accumulate separately and are not automatically compounded back into the position.

Neby's Harvester is a fork of Revert.finance's Auto-compounder, built to address this issue. Users can deposit their liquidity positions to the Auto-compounder, ensuring fees are regularly collected and compounded.

In addition to the features of the Auto-compounder, the Harvester offers harvesting, shared ownership, and composability:

* Harvesting: Allows users to pull fees earned by the NFT into their wallets, rather than recompounding them. Users can choose to harvest a portion of their fees while the remainder is compounded back.
* Shared Ownership: Enables multiple harvest recipients, ideal for protocol-owned liquidity. A protocol can designate fee recipients without transferring ownership of the NFT.
* Composability: The Harvester is compatible with external smart contracts such as the LiquidityPositionStaker.

#### Roles

User:

* Users provide liquidity position tokens to be harvested and/or auto-compounded.
* Each token has customizable settings for how much of its fees are harvested versus compounded, and who the harvest recipients are.
* Users can also manage liquidity by decreasing token liquidity and collecting fees directly.

Owner:

* The owner can set fees for auto-compounding and harvesting (up to 2% of liquidity position revenue) to cover gas costs.
* The owner manages the Time-Weighted Average Price (TWAP) configuration, ensuring swaps do not negatively impact user revenue.

Workers:

* Any account can auto-compound or auto-harvest on behalf of deposited tokens. Neby operates bots to ensure regular servicing of all deposits.

#### Interactions

* The Harvester receives positions from the LiquidityPositionStaker, with the latter as the token owner.
* It executes swaps and manages liquidity positions within their respective pools.