{
  "$schema": "https://hookforge.pages.dev/schema/hook-manifest.json",
  "slug": "top-of-block-auction",
  "name": "TopOfBlockAuction",
  "contract": "TopOfBlockAuctionHook",
  "version": "1.0.0",
  "family": "Order flow and MEV",
  "summary": "Sells the right to trade first in a block, and gives the proceeds to the liquidity providers who are being traded against.",
  "description": "The first swap in a block against a pool whose price has moved overnight is worth money, and today that money goes to whoever wins the gas auction or pays the builder. The liquidity providers, whose stale quote is the entire source of the value, receive the ordinary swap fee and nothing else. This is the largest single transfer away from passive liquidity in the system, and it happens in a market the pool cannot see and does not participate in. The idea of auctioning that right and paying the pool instead is not new: it is the am-AMM proposal, and MEV-Share and MEV-Boost redistribute adjacent value off-chain. What has been missing is a version the pool runs itself, per block, with no auctioneer, no off-chain infrastructure and nobody to trust with the proceeds. This is that. A searcher bids native currency for a named future block. The highest bid at the time the block arrives wins the exclusive right to the first swap in it, and the bid is paid to the pool's liquidity providers. Everybody else can still trade in that block, just not first. Once the winner has taken their slot, or if nobody bid, the pool is ordinary. Bidding on a future block rather than the current one is what makes this work without an auctioneer. A bid for the block being built cannot be evaluated inside that block without knowing bids that have not arrived, so the auction would have to be settled by somebody. Bidding one block ahead means the winner is already known when the block opens, and the contract simply checks who it is. A losing bid is never taken. Bids are held and the loser withdraws in full, so bidding costs nothing but gas, and a searcher who is outbid is not out of pocket.",
  "priorArt": "The mechanism is the am-AMM auction (Adams, Moallemi, Reynolds, Robinson), which auctions pool management rights over a longer horizon, and the broader family of order-flow auctions run off-chain by builders and relays. Running the auction per block, inside the pool, with the winner known before the block opens so no auctioneer is needed, is the contribution here.",
  "limitation": "The pool cannot see whether the winner actually used their slot well, only that they took it, so a searcher who wins and does nothing simply wastes their bid and blocks nobody. More importantly, a builder can still reorder the block: this sells the first slot in the pool's own accounting, not the first position in the block, so a searcher who controls ordering can place their own transaction before the winner's and the winner gets a slot that is no longer first. It raises the cost of that rather than preventing it.",
  "tags": [
    "mev",
    "auction",
    "order-flow",
    "lp-economics",
    "no-admin"
  ],
  "recommendedChains": [
    "base",
    "arbitrum",
    "unichain",
    "robinhood",
    "ethereum",
    "optimism",
    "polygon",
    "bnb"
  ],
  "source": "contracts/src/hooks/TopOfBlockAuctionHook.sol",
  "docs": "https://hookforge.pages.dev/hooks/top-of-block-auction",
  "repo": null,
  "site": null,
  "permissions": {
    "afterRemoveLiquidityReturnsDelta": false,
    "afterAddLiquidityReturnsDelta": false,
    "afterSwapReturnsDelta": false,
    "beforeSwapReturnsDelta": false,
    "afterDonate": false,
    "beforeDonate": false,
    "afterSwap": false,
    "beforeSwap": true,
    "afterRemoveLiquidity": false,
    "beforeRemoveLiquidity": false,
    "afterAddLiquidity": false,
    "beforeAddLiquidity": false,
    "afterInitialize": true,
    "beforeInitialize": false
  },
  "permissionsSource": "declaration",
  "properties": {
    "dynamicFee": false,
    "upgradeable": false,
    "requiresCustomSwapData": false,
    "vanillaSwap": true,
    "swapAccess": "none"
  },
  "configure": {
    "signature": "configure((address,address,uint24,int24,address),(uint32,uint128))",
    "fields": [
      {
        "name": "leadBlocks",
        "type": "uint32"
      },
      {
        "name": "minBid",
        "type": "uint128"
      }
    ]
  },
  "errors": [
    {
      "signature": "BidTooLow(uint256)",
      "notice": "The bid does not beat the standing one."
    },
    {
      "signature": "BlockTooSoon(uint256)",
      "notice": "The bid targets a block that is not far enough ahead, or has already passed."
    },
    {
      "signature": "HookNotImplemented()",
      "notice": "The hook function is not implemented."
    },
    {
      "signature": "InvalidLead()",
      "notice": "`leadBlocks` of zero would ask the pool to settle an auction inside the block it is bidding on."
    },
    {
      "signature": "InvalidPool()",
      "notice": "The pool is not configured to use this hook."
    },
    {
      "signature": "NothingToWithdraw()",
      "notice": "There is nothing to withdraw."
    },
    {
      "signature": "PoolAlreadyInitialized()",
      "notice": "The pool already exists, so its configuration is final."
    },
    {
      "signature": "PoolNotConfigured()",
      "notice": "The pool was initialized without a configuration for this hook."
    },
    {
      "signature": "SlotBelongsTo(address)",
      "notice": "Somebody else holds the first slot in this block."
    }
  ],
  "deployments": [],
  "abi": [
    {
      "type": "constructor",
      "inputs": [
        {
          "name": "_poolManager",
          "type": "address",
          "internalType": "contract IPoolManager"
        }
      ],
      "stateMutability": "nonpayable"
    },
    {
      "type": "function",
      "name": "afterAddLiquidity",
      "inputs": [
        {
          "name": "sender",
          "type": "address",
          "internalType": "address"
        },
        {
          "name": "key",
          "type": "tuple",
          "internalType": "struct PoolKey",
          "components": [
            {
              "name": "currency0",
              "type": "address",
              "internalType": "Currency"
            },
            {
              "name": "currency1",
              "type": "address",
              "internalType": "Currency"
            },
            {
              "name": "fee",
              "type": "uint24",
              "internalType": "uint24"
            },
            {
              "name": "tickSpacing",
              "type": "int24",
              "internalType": "int24"
            },
            {
              "name": "hooks",
              "type": "address",
              "internalType": "contract IHooks"
            }
          ]
        },
        {
          "name": "params",
          "type": "tuple",
          "internalType": "struct ModifyLiquidityParams",
          "components": [
            {
              "name": "tickLower",
              "type": "int24",
              "internalType": "int24"
            },
            {
              "name": "tickUpper",
              "type": "int24",
              "internalType": "int24"
            },
            {
              "name": "liquidityDelta",
              "type": "int256",
              "internalType": "int256"
            },
            {
              "name": "salt",
              "type": "bytes32",
              "internalType": "bytes32"
            }
          ]
        },
        {
          "name": "delta0",
          "type": "int256",
          "internalType": "BalanceDelta"
        },
        {
          "name": "delta1",
          "type": "int256",
          "internalType": "BalanceDelta"
        },
        {
          "name": "hookData",
          "type": "bytes",
          "internalType": "bytes"
        }
      ],
      "outputs": [
        {
          "name": "",
          "type": "bytes4",
          "internalType": "bytes4"
        },
        {
          "name": "",
          "type": "int256",
          "internalType": "BalanceDelta"
        }
      ],
      "stateMutability": "nonpayable"
    },
    {
      "type": "function",
      "name": "afterDonate",
      "inputs": [
        {
          "name": "sender",
          "type": "address",
          "internalType": "address"
        },
        {
          "name": "key",
          "type": "tuple",
          "internalType": "struct PoolKey",
          "components": [
            {
              "name": "currency0",
              "type": "address",
              "internalType": "Currency"
            },
            {
              "name": "currency1",
              "type": "address",
              "internalType": "Currency"
            },
            {
              "name": "fee",
              "type": "uint24",
              "internalType": "uint24"
            },
            {
              "name": "tickSpacing",
              "type": "int24",
              "internalType": "int24"
            },
            {
              "name": "hooks",
              "type": "address",
              "internalType": "contract IHooks"
            }
          ]
        },
        {
          "name": "amount0",
          "type": "uint256",
          "internalType": "uint256"
        },
        {
          "name": "amount1",
          "type": "uint256",
          "internalType": "uint256"
        },
        {
          "name": "hookData",
          "type": "bytes",
          "internalType": "bytes"
        }
      ],
      "outputs": [
        {
          "name": "",
          "type": "bytes4",
          "internalType": "bytes4"
        }
      ],
      "stateMutability": "nonpayable"
    },
    {
      "type": "function",
      "name": "afterInitialize",
      "inputs": [
        {
          "name": "sender",
          "type": "address",
          "internalType": "address"
        },
        {
          "name": "key",
          "type": "tuple",
          "internalType": "struct PoolKey",
          "components": [
            {
              "name": "currency0",
              "type": "address",
              "internalType": "Currency"
            },
            {
              "name": "currency1",
              "type": "address",
              "internalType": "Currency"
            },
            {
              "name": "fee",
              "type": "uint24",
              "internalType": "uint24"
            },
            {
              "name": "tickSpacing",
              "type": "int24",
              "internalType": "int24"
            },
            {
              "name": "hooks",
              "type": "address",
              "internalType": "contract IHooks"
            }
          ]
        },
        {
          "name": "sqrtPriceX96",
          "type": "uint160",
          "internalType": "uint160"
        },
        {
          "name": "tick",
          "type": "int24",
          "internalType": "int24"
        }
      ],
      "outputs": [
        {
          "name": "",
          "type": "bytes4",
          "internalType": "bytes4"
        }
      ],
      "stateMutability": "nonpayable"
    },
    {
      "type": "function",
      "name": "afterRemoveLiquidity",
      "inputs": [
        {
          "name": "sender",
          "type": "address",
          "internalType": "address"
        },
        {
          "name": "key",
          "type": "tuple",
          "internalType": "struct PoolKey",
          "components": [
            {
              "name": "currency0",
              "type": "address",
              "internalType": "Currency"
            },
            {
              "name": "currency1",
              "type": "address",
              "internalType": "Currency"
            },
            {
              "name": "fee",
              "type": "uint24",
              "internalType": "uint24"
            },
            {
              "name": "tickSpacing",
              "type": "int24",
              "internalType": "int24"
            },
            {
              "name": "hooks",
              "type": "address",
              "internalType": "contract IHooks"
            }
          ]
        },
        {
          "name": "params",
          "type": "tuple",
          "internalType": "struct ModifyLiquidityParams",
          "components": [
            {
              "name": "tickLower",
              "type": "int24",
              "internalType": "int24"
            },
            {
              "name": "tickUpper",
              "type": "int24",
              "internalType": "int24"
            },
            {
              "name": "liquidityDelta",
              "type": "int256",
              "internalType": "int256"
            },
            {
              "name": "salt",
              "type": "bytes32",
              "internalType": "bytes32"
            }
          ]
        },
        {
          "name": "delta0",
          "type": "int256",
          "internalType": "BalanceDelta"
        },
        {
          "name": "delta1",
          "type": "int256",
          "internalType": "BalanceDelta"
        },
        {
          "name": "hookData",
          "type": "bytes",
          "internalType": "bytes"
        }
      ],
      "outputs": [
        {
          "name": "",
          "type": "bytes4",
          "internalType": "bytes4"
        },
        {
          "name": "",
          "type": "int256",
          "internalType": "BalanceDelta"
        }
      ],
      "stateMutability": "nonpayable"
    },
    {
      "type": "function",
      "name": "afterSwap",
      "inputs": [
        {
          "name": "sender",
          "type": "address",
          "internalType": "address"
        },
        {
          "name": "key",
          "type": "tuple",
          "internalType": "struct PoolKey",
          "components": [
            {
              "name": "currency0",
              "type": "address",
              "internalType": "Currency"
            },
            {
              "name": "currency1",
              "type": "address",
              "internalType": "Currency"
            },
            {
              "name": "fee",
              "type": "uint24",
              "internalType": "uint24"
            },
            {
              "name": "tickSpacing",
              "type": "int24",
              "internalType": "int24"
            },
            {
              "name": "hooks",
              "type": "address",
              "internalType": "contract IHooks"
            }
          ]
        },
        {
          "name": "params",
          "type": "tuple",
          "internalType": "struct SwapParams",
          "components": [
            {
              "name": "zeroForOne",
              "type": "bool",
              "internalType": "bool"
            },
            {
              "name": "amountSpecified",
              "type": "int256",
              "internalType": "int256"
            },
            {
              "name": "sqrtPriceLimitX96",
              "type": "uint160",
              "internalType": "uint160"
            }
          ]
        },
        {
          "name": "delta",
          "type": "int256",
          "internalType": "BalanceDelta"
        },
        {
          "name": "hookData",
          "type": "bytes",
          "internalType": "bytes"
        }
      ],
      "outputs": [
        {
          "name": "",
          "type": "bytes4",
          "internalType": "bytes4"
        },
        {
          "name": "",
          "type": "int128",
          "internalType": "int128"
        }
      ],
      "stateMutability": "nonpayable"
    },
    {
      "type": "function",
      "name": "beforeAddLiquidity",
      "inputs": [
        {
          "name": "sender",
          "type": "address",
          "internalType": "address"
        },
        {
          "name": "key",
          "type": "tuple",
          "internalType": "struct PoolKey",
          "components": [
            {
              "name": "currency0",
              "type": "address",
              "internalType": "Currency"
            },
            {
              "name": "currency1",
              "type": "address",
              "internalType": "Currency"
            },
            {
              "name": "fee",
              "type": "uint24",
              "internalType": "uint24"
            },
            {
              "name": "tickSpacing",
              "type": "int24",
              "internalType": "int24"
            },
            {
              "name": "hooks",
              "type": "address",
              "internalType": "contract IHooks"
            }
          ]
        },
        {
          "name": "params",
          "type": "tuple",
          "internalType": "struct ModifyLiquidityParams",
          "components": [
            {
              "name": "tickLower",
              "type": "int24",
              "internalType": "int24"
            },
            {
              "name": "tickUpper",
              "type": "int24",
              "internalType": "int24"
            },
            {
              "name": "liquidityDelta",
              "type": "int256",
              "internalType": "int256"
            },
            {
              "name": "salt",
              "type": "bytes32",
              "internalType": "bytes32"
            }
          ]
        },
        {
          "name": "hookData",
          "type": "bytes",
          "internalType": "bytes"
        }
      ],
      "outputs": [
        {
          "name": "",
          "type": "bytes4",
          "internalType": "bytes4"
        }
      ],
      "stateMutability": "nonpayable"
    },
    {
      "type": "function",
      "name": "beforeDonate",
      "inputs": [
        {
          "name": "sender",
          "type": "address",
          "internalType": "address"
        },
        {
          "name": "key",
          "type": "tuple",
          "internalType": "struct PoolKey",
          "components": [
            {
              "name": "currency0",
              "type": "address",
              "internalType": "Currency"
            },
            {
              "name": "currency1",
              "type": "address",
              "internalType": "Currency"
            },
            {
              "name": "fee",
              "type": "uint24",
              "internalType": "uint24"
            },
            {
              "name": "tickSpacing",
              "type": "int24",
              "internalType": "int24"
            },
            {
              "name": "hooks",
              "type": "address",
              "internalType": "contract IHooks"
            }
          ]
        },
        {
          "name": "amount0",
          "type": "uint256",
          "internalType": "uint256"
        },
        {
          "name": "amount1",
          "type": "uint256",
          "internalType": "uint256"
        },
        {
          "name": "hookData",
          "type": "bytes",
          "internalType": "bytes"
        }
      ],
      "outputs": [
        {
          "name": "",
          "type": "bytes4",
          "internalType": "bytes4"
        }
      ],
      "stateMutability": "nonpayable"
    },
    {
      "type": "function",
      "name": "beforeInitialize",
      "inputs": [
        {
          "name": "sender",
          "type": "address",
          "internalType": "address"
        },
        {
          "name": "key",
          "type": "tuple",
          "internalType": "struct PoolKey",
          "components": [
            {
              "name": "currency0",
              "type": "address",
              "internalType": "Currency"
            },
            {
              "name": "currency1",
              "type": "address",
              "internalType": "Currency"
            },
            {
              "name": "fee",
              "type": "uint24",
              "internalType": "uint24"
            },
            {
              "name": "tickSpacing",
              "type": "int24",
              "internalType": "int24"
            },
            {
              "name": "hooks",
              "type": "address",
              "internalType": "contract IHooks"
            }
          ]
        },
        {
          "name": "sqrtPriceX96",
          "type": "uint160",
          "internalType": "uint160"
        }
      ],
      "outputs": [
        {
          "name": "",
          "type": "bytes4",
          "internalType": "bytes4"
        }
      ],
      "stateMutability": "nonpayable"
    },
    {
      "type": "function",
      "name": "beforeRemoveLiquidity",
      "inputs": [
        {
          "name": "sender",
          "type": "address",
          "internalType": "address"
        },
        {
          "name": "key",
          "type": "tuple",
          "internalType": "struct PoolKey",
          "components": [
            {
              "name": "currency0",
              "type": "address",
              "internalType": "Currency"
            },
            {
              "name": "currency1",
              "type": "address",
              "internalType": "Currency"
            },
            {
              "name": "fee",
              "type": "uint24",
              "internalType": "uint24"
            },
            {
              "name": "tickSpacing",
              "type": "int24",
              "internalType": "int24"
            },
            {
              "name": "hooks",
              "type": "address",
              "internalType": "contract IHooks"
            }
          ]
        },
        {
          "name": "params",
          "type": "tuple",
          "internalType": "struct ModifyLiquidityParams",
          "components": [
            {
              "name": "tickLower",
              "type": "int24",
              "internalType": "int24"
            },
            {
              "name": "tickUpper",
              "type": "int24",
              "internalType": "int24"
            },
            {
              "name": "liquidityDelta",
              "type": "int256",
              "internalType": "int256"
            },
            {
              "name": "salt",
              "type": "bytes32",
              "internalType": "bytes32"
            }
          ]
        },
        {
          "name": "hookData",
          "type": "bytes",
          "internalType": "bytes"
        }
      ],
      "outputs": [
        {
          "name": "",
          "type": "bytes4",
          "internalType": "bytes4"
        }
      ],
      "stateMutability": "nonpayable"
    },
    {
      "type": "function",
      "name": "beforeSwap",
      "inputs": [
        {
          "name": "sender",
          "type": "address",
          "internalType": "address"
        },
        {
          "name": "key",
          "type": "tuple",
          "internalType": "struct PoolKey",
          "components": [
            {
              "name": "currency0",
              "type": "address",
              "internalType": "Currency"
            },
            {
              "name": "currency1",
              "type": "address",
              "internalType": "Currency"
            },
            {
              "name": "fee",
              "type": "uint24",
              "internalType": "uint24"
            },
            {
              "name": "tickSpacing",
              "type": "int24",
              "internalType": "int24"
            },
            {
              "name": "hooks",
              "type": "address",
              "internalType": "contract IHooks"
            }
          ]
        },
        {
          "name": "params",
          "type": "tuple",
          "internalType": "struct SwapParams",
          "components": [
            {
              "name": "zeroForOne",
              "type": "bool",
              "internalType": "bool"
            },
            {
              "name": "amountSpecified",
              "type": "int256",
              "internalType": "int256"
            },
            {
              "name": "sqrtPriceLimitX96",
              "type": "uint160",
              "internalType": "uint160"
            }
          ]
        },
        {
          "name": "hookData",
          "type": "bytes",
          "internalType": "bytes"
        }
      ],
      "outputs": [
        {
          "name": "",
          "type": "bytes4",
          "internalType": "bytes4"
        },
        {
          "name": "",
          "type": "int256",
          "internalType": "BeforeSwapDelta"
        },
        {
          "name": "",
          "type": "uint24",
          "internalType": "uint24"
        }
      ],
      "stateMutability": "nonpayable"
    },
    {
      "type": "function",
      "name": "bid",
      "inputs": [
        {
          "name": "key",
          "type": "tuple",
          "internalType": "struct PoolKey",
          "components": [
            {
              "name": "currency0",
              "type": "address",
              "internalType": "Currency"
            },
            {
              "name": "currency1",
              "type": "address",
              "internalType": "Currency"
            },
            {
              "name": "fee",
              "type": "uint24",
              "internalType": "uint24"
            },
            {
              "name": "tickSpacing",
              "type": "int24",
              "internalType": "int24"
            },
            {
              "name": "hooks",
              "type": "address",
              "internalType": "contract IHooks"
            }
          ]
        },
        {
          "name": "blockNumber",
          "type": "uint256",
          "internalType": "uint256"
        }
      ],
      "outputs": [],
      "stateMutability": "payable"
    },
    {
      "type": "function",
      "name": "configOf",
      "inputs": [
        {
          "name": "",
          "type": "bytes32",
          "internalType": "PoolId"
        }
      ],
      "outputs": [
        {
          "name": "leadBlocks",
          "type": "uint32",
          "internalType": "uint32"
        },
        {
          "name": "minBid",
          "type": "uint128",
          "internalType": "uint128"
        }
      ],
      "stateMutability": "view"
    },
    {
      "type": "function",
      "name": "configure",
      "inputs": [
        {
          "name": "key",
          "type": "tuple",
          "internalType": "struct PoolKey",
          "components": [
            {
              "name": "currency0",
              "type": "address",
              "internalType": "Currency"
            },
            {
              "name": "currency1",
              "type": "address",
              "internalType": "Currency"
            },
            {
              "name": "fee",
              "type": "uint24",
              "internalType": "uint24"
            },
            {
              "name": "tickSpacing",
              "type": "int24",
              "internalType": "int24"
            },
            {
              "name": "hooks",
              "type": "address",
              "internalType": "contract IHooks"
            }
          ]
        },
        {
          "name": "cfg",
          "type": "tuple",
          "internalType": "struct TopOfBlockAuctionHook.Config",
          "components": [
            {
              "name": "leadBlocks",
              "type": "uint32",
              "internalType": "uint32"
            },
            {
              "name": "minBid",
              "type": "uint128",
              "internalType": "uint128"
            }
          ]
        }
      ],
      "outputs": [],
      "stateMutability": "nonpayable"
    },
    {
      "type": "function",
      "name": "distribute",
      "inputs": [
        {
          "name": "key",
          "type": "tuple",
          "internalType": "struct PoolKey",
          "components": [
            {
              "name": "currency0",
              "type": "address",
              "internalType": "Currency"
            },
            {
              "name": "currency1",
              "type": "address",
              "internalType": "Currency"
            },
            {
              "name": "fee",
              "type": "uint24",
              "internalType": "uint24"
            },
            {
              "name": "tickSpacing",
              "type": "int24",
              "internalType": "int24"
            },
            {
              "name": "hooks",
              "type": "address",
              "internalType": "contract IHooks"
            }
          ]
        },
        {
          "name": "to",
          "type": "address",
          "internalType": "address"
        }
      ],
      "outputs": [],
      "stateMutability": "nonpayable"
    },
    {
      "type": "function",
      "name": "earliestBiddableBlock",
      "inputs": [
        {
          "name": "id",
          "type": "bytes32",
          "internalType": "PoolId"
        }
      ],
      "outputs": [
        {
          "name": "",
          "type": "uint256",
          "internalType": "uint256"
        }
      ],
      "stateMutability": "view"
    },
    {
      "type": "function",
      "name": "getHookPermissions",
      "inputs": [],
      "outputs": [
        {
          "name": "",
          "type": "tuple",
          "internalType": "struct Hooks.Permissions",
          "components": [
            {
              "name": "beforeInitialize",
              "type": "bool",
              "internalType": "bool"
            },
            {
              "name": "afterInitialize",
              "type": "bool",
              "internalType": "bool"
            },
            {
              "name": "beforeAddLiquidity",
              "type": "bool",
              "internalType": "bool"
            },
            {
              "name": "afterAddLiquidity",
              "type": "bool",
              "internalType": "bool"
            },
            {
              "name": "beforeRemoveLiquidity",
              "type": "bool",
              "internalType": "bool"
            },
            {
              "name": "afterRemoveLiquidity",
              "type": "bool",
              "internalType": "bool"
            },
            {
              "name": "beforeSwap",
              "type": "bool",
              "internalType": "bool"
            },
            {
              "name": "afterSwap",
              "type": "bool",
              "internalType": "bool"
            },
            {
              "name": "beforeDonate",
              "type": "bool",
              "internalType": "bool"
            },
            {
              "name": "afterDonate",
              "type": "bool",
              "internalType": "bool"
            },
            {
              "name": "beforeSwapReturnDelta",
              "type": "bool",
              "internalType": "bool"
            },
            {
              "name": "afterSwapReturnDelta",
              "type": "bool",
              "internalType": "bool"
            },
            {
              "name": "afterAddLiquidityReturnDelta",
              "type": "bool",
              "internalType": "bool"
            },
            {
              "name": "afterRemoveLiquidityReturnDelta",
              "type": "bool",
              "internalType": "bool"
            }
          ]
        }
      ],
      "stateMutability": "pure"
    },
    {
      "type": "function",
      "name": "hookName",
      "inputs": [],
      "outputs": [
        {
          "name": "",
          "type": "string",
          "internalType": "string"
        }
      ],
      "stateMutability": "pure"
    },
    {
      "type": "function",
      "name": "hookTags",
      "inputs": [],
      "outputs": [
        {
          "name": "tags",
          "type": "string[]",
          "internalType": "string[]"
        }
      ],
      "stateMutability": "pure"
    },
    {
      "type": "function",
      "name": "hookVersion",
      "inputs": [],
      "outputs": [
        {
          "name": "",
          "type": "string",
          "internalType": "string"
        }
      ],
      "stateMutability": "view"
    },
    {
      "type": "function",
      "name": "isPoolInitialized",
      "inputs": [
        {
          "name": "id",
          "type": "bytes32",
          "internalType": "PoolId"
        }
      ],
      "outputs": [
        {
          "name": "",
          "type": "bool",
          "internalType": "bool"
        }
      ],
      "stateMutability": "view"
    },
    {
      "type": "function",
      "name": "poolManager",
      "inputs": [],
      "outputs": [
        {
          "name": "",
          "type": "address",
          "internalType": "contract IPoolManager"
        }
      ],
      "stateMutability": "view"
    },
    {
      "type": "function",
      "name": "proceeds",
      "inputs": [
        {
          "name": "",
          "type": "bytes32",
          "internalType": "PoolId"
        }
      ],
      "outputs": [
        {
          "name": "",
          "type": "uint256",
          "internalType": "uint256"
        }
      ],
      "stateMutability": "view"
    },
    {
      "type": "function",
      "name": "refunds",
      "inputs": [
        {
          "name": "",
          "type": "address",
          "internalType": "address"
        }
      ],
      "outputs": [
        {
          "name": "",
          "type": "uint256",
          "internalType": "uint256"
        }
      ],
      "stateMutability": "view"
    },
    {
      "type": "function",
      "name": "slotTaken",
      "inputs": [
        {
          "name": "",
          "type": "bytes32",
          "internalType": "PoolId"
        },
        {
          "name": "",
          "type": "uint256",
          "internalType": "uint256"
        }
      ],
      "outputs": [
        {
          "name": "",
          "type": "bool",
          "internalType": "bool"
        }
      ],
      "stateMutability": "view"
    },
    {
      "type": "function",
      "name": "specURI",
      "inputs": [],
      "outputs": [
        {
          "name": "",
          "type": "string",
          "internalType": "string"
        }
      ],
      "stateMutability": "pure"
    },
    {
      "type": "function",
      "name": "supportsInterface",
      "inputs": [
        {
          "name": "interfaceId",
          "type": "bytes4",
          "internalType": "bytes4"
        }
      ],
      "outputs": [
        {
          "name": "",
          "type": "bool",
          "internalType": "bool"
        }
      ],
      "stateMutability": "view"
    },
    {
      "type": "function",
      "name": "winnerOf",
      "inputs": [
        {
          "name": "",
          "type": "bytes32",
          "internalType": "PoolId"
        },
        {
          "name": "",
          "type": "uint256",
          "internalType": "uint256"
        }
      ],
      "outputs": [
        {
          "name": "bidder",
          "type": "address",
          "internalType": "address"
        },
        {
          "name": "amount",
          "type": "uint128",
          "internalType": "uint128"
        }
      ],
      "stateMutability": "view"
    },
    {
      "type": "function",
      "name": "withdrawRefund",
      "inputs": [],
      "outputs": [],
      "stateMutability": "nonpayable"
    },
    {
      "type": "event",
      "name": "BidPlaced",
      "inputs": [
        {
          "name": "id",
          "type": "bytes32",
          "indexed": true,
          "internalType": "PoolId"
        },
        {
          "name": "blockNumber",
          "type": "uint256",
          "indexed": true,
          "internalType": "uint256"
        },
        {
          "name": "bidder",
          "type": "address",
          "indexed": true,
          "internalType": "address"
        },
        {
          "name": "amount",
          "type": "uint256",
          "indexed": false,
          "internalType": "uint256"
        }
      ],
      "anonymous": false
    },
    {
      "type": "event",
      "name": "ProceedsDonated",
      "inputs": [
        {
          "name": "id",
          "type": "bytes32",
          "indexed": true,
          "internalType": "PoolId"
        },
        {
          "name": "amount",
          "type": "uint256",
          "indexed": false,
          "internalType": "uint256"
        }
      ],
      "anonymous": false
    },
    {
      "type": "event",
      "name": "SlotUsed",
      "inputs": [
        {
          "name": "id",
          "type": "bytes32",
          "indexed": true,
          "internalType": "PoolId"
        },
        {
          "name": "blockNumber",
          "type": "uint256",
          "indexed": true,
          "internalType": "uint256"
        },
        {
          "name": "winner",
          "type": "address",
          "indexed": true,
          "internalType": "address"
        },
        {
          "name": "amount",
          "type": "uint256",
          "indexed": false,
          "internalType": "uint256"
        }
      ],
      "anonymous": false
    },
    {
      "type": "error",
      "name": "BidTooLow",
      "inputs": [
        {
          "name": "standing",
          "type": "uint256",
          "internalType": "uint256"
        }
      ]
    },
    {
      "type": "error",
      "name": "BlockTooSoon",
      "inputs": [
        {
          "name": "earliest",
          "type": "uint256",
          "internalType": "uint256"
        }
      ]
    },
    {
      "type": "error",
      "name": "HookNotImplemented",
      "inputs": []
    },
    {
      "type": "error",
      "name": "InvalidLead",
      "inputs": []
    },
    {
      "type": "error",
      "name": "InvalidPool",
      "inputs": []
    },
    {
      "type": "error",
      "name": "NotPoolManager",
      "inputs": []
    },
    {
      "type": "error",
      "name": "NothingToWithdraw",
      "inputs": []
    },
    {
      "type": "error",
      "name": "PoolAlreadyInitialized",
      "inputs": []
    },
    {
      "type": "error",
      "name": "PoolNotConfigured",
      "inputs": []
    },
    {
      "type": "error",
      "name": "SlotBelongsTo",
      "inputs": [
        {
          "name": "winner",
          "type": "address",
          "internalType": "address"
        }
      ]
    }
  ]
}