BuyBack Contract Configuration

This guide provides the configuration parameters required to set up and deploy a Buyback Contract in the Defactor Engage platform.

Buyback Contract Configuration

Unlike other modules, Buyback Contracts in Engage do not rely on pre-defined plans. Instead, each contract operates autonomously based on its configuration.

The core function of a Buyback Contract is to receive USDC, periodically convert it into FACTR tokens via a swap on the open market, and then lock the purchased FACTR for one year. After the lock period, the tokens are distributed to a set of predefined vault addresses.

This mechanism supports Defactor’s circular token economy by reducing circulating supply and reinforcing long-term value through time-locked distribution:

BuyBack Configuration Parameters

Parameter	Type	Description
recoverer	address	Address authorized to recover stuck tokens from the contract.
buyFrequency	uint	Cooldown period between consecutive buybacks (in seconds).
vaults	address[]	Array of vault addresses to distribute purchased FACTR tokens (typically 4).
maxLiquiditySlippage	uint16	Maximum allowed slippage (in basis points) during token swap.
uniswapRouter	address	Uniswap v3 router address used to execute swaps.
factr	address	FACTR token address to be bought back.
usdc	address	USDC token address used to purchase FACTR.
weth	address	WETH token used as an intermediate route in the swap.
quoter	address	Contract address to fetch swap quotes without executing them.

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Example Configuration

buybackContract:
  recoverer: "0x1234567890ABCDEF1234567890ABCDEF12345678" # Address allowed to recover stuck tokens
  buyFrequency: 86400 # Buyback cooldown period (in seconds)
  vaults: # Vault addresses to distribute purchased FACTR
    - "0xABCDEF1234567890ABCDEF1234567890ABCDEF01"
    - "0xABCDEF1234567890ABCDEF1234567890ABCDEF02"
    - "0xABCDEF1234567890ABCDEF1234567890ABCDEF03"
    - "0xABCDEF1234567890ABCDEF1234567890ABCDEF04"
  maxLiquiditySlippage: 100 # 1% slippage (100 basis points)
  uniswapRouter: "0xE592427A0AECE92DE3EDEE1F18E0157C05861564" # Uniswap V3 router
  factrToken: "0xF4C5AF7E0A695E2B3832D203A9522A1D77B40F76" # FACTR token address
  usdcToken: "0xA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48" # USDC token address
  wethToken: "0xC02AA39B223FE8D0A0E5C4F27EAD9083C756CC2" # WETH intermediary
  quoter: "0xB27308F9F90D607463BB33EA1BEBB41C27CE5AB6" # Uniswap Quoter contract