GET
/
base
/
calldata
curl --location 'https://api.fibrous.finance/base/calldata?amount=100000000000000000&tokenInAddress=0x0000000000000000000000000000000000000000&tokenOutAddress=0xd9aaec86b65d86f6a7b5b1b0c42ffa531710b6ca&slippage=0.1&destination=0xd9aaec86b65d86f6a7b5b1b0c42ffa531710b6ca' \
--header 'Origin: application/javascript'
 


{
    "route": {
        "success": true,
        "routeSwapType": 0,
        "inputToken": {
            "name": "Wrapped Ether",
            "address": "0x4200000000000000000000000000000000000006",
            "decimals": 18,
            "price": 4729.31
        },
        "inputAmount": "100000000000000000",
        "outputToken": {
            "name": "USD Base Coin",
            "address": "0xd9aaec86b65d86f6a7b5b1b0c42ffa531710b6ca",
            "decimals": 6,
            "price": 0.999727
        },
        "outputAmount": "471974940",
        "route": [
            {
                "percent": "100%",
                "swaps": [
                    [
                        {
                            "protocol": 5,
                            "poolName": "Uniswap V3",
                            "poolAddress": "0x4c36388be6f416a29c8d8eee81c771ce6be14b18",
                            "fromTokenAddress": "0x4200000000000000000000000000000000000006",
                            "toTokenAddress": "0xd9aaec86b65d86f6a7b5b1b0c42ffa531710b6ca",
                            "percent": "83%",
                            "extraData": {
                                "fee": 500
                            }
                        },
                        {
                            "protocol": 5,
                            "poolName": "Uniswap V3",
                            "poolAddress": "0x3ddf264ac95d19e81f8c25f4c300c4e59e424d43",
                            "fromTokenAddress": "0x4200000000000000000000000000000000000006",
                            "toTokenAddress": "0xd9aaec86b65d86f6a7b5b1b0c42ffa531710b6ca",
                            "percent": "10%",
                            "extraData": {
                                "fee": 3000
                            }
                        },
                        {
                            "protocol": 9,
                            "poolName": "PancakeSwap V3",
                            "poolAddress": "0xe58b73ff901325b8b2056b29712c50237242f520",
                            "fromTokenAddress": "0x4200000000000000000000000000000000000006",
                            "toTokenAddress": "0xd9aaec86b65d86f6a7b5b1b0c42ffa531710b6ca",
                            "percent": "7%",
                            "extraData": {
                                "fee": 500
                            }
                        }
                    ]
                ]
            }
        ],
        "estimatedGasUsed": "1108171899576",
        "estimatedGasUsedInUsd": 0.010410898218070664,
        "bestQuotesByProtocols": [],
        "time": 0.654,
        "initial": true
    },
    "calldata": {
        "route": {
            "token_in": "0x4200000000000000000000000000000000000006",
            "token_out": "0xd9aaec86b65d86f6a7b5b1b0c42ffa531710b6ca",
            "amount_in": "100000000000000000",
            "amount_out": "471974940",
            "min_received": "471502966",
            "destination": "0xd9aaec86b65d86f6a7b5b1b0c42ffa531710b6ca",
            "swap_type": 0
        },
        "swap_parameters": [
            {
                "token_in": "0x4200000000000000000000000000000000000006",
                "token_out": "0xd9aaec86b65d86f6a7b5b1b0c42ffa531710b6ca",
                "rate": "830000",
                "protocol_id": "5",
                "pool_address": "0x4c36388be6f416a29c8d8eee81c771ce6be14b18",
                "swap_type": 0,
                "extra_data": "0x00000000000000000000000000000000000000000000000000000000000001f4"
            },
            {
                "token_in": "0x4200000000000000000000000000000000000006",
                "token_out": "0xd9aaec86b65d86f6a7b5b1b0c42ffa531710b6ca",
                "rate": "100000",
                "protocol_id": "5",
                "pool_address": "0x3ddf264ac95d19e81f8c25f4c300c4e59e424d43",
                "swap_type": 0,
                "extra_data": "0x0000000000000000000000000000000000000000000000000000000000000bb8"
            },
            {
                "token_in": "0x4200000000000000000000000000000000000006",
                "token_out": "0xd9aaec86b65d86f6a7b5b1b0c42ffa531710b6ca",
                "rate": "70000",
                "protocol_id": "9",
                "pool_address": "0xe58b73ff901325b8b2056b29712c50237242f520",
                "swap_type": 0,
                "extra_data": "0x00000000000000000000000000000000000000000000000000000000000001f4"
            }
        ]
    }
}

​
Endpoint

https://api.fibrous.finance/base/calldata
Generate the calldata required to execute a swap through the Fibrous’ router contract. This endpoint provides the raw transaction data that can be used to execute the swap directly through a Web3 provider.

​
Request Body Parameters

​
amount
string
required
The complete response object from the /base/route endpoint. This contains all the necessary information about the optimal route.
​
tokenInAddress
string
required
The address of the input token.Example: "0x4200000000000000000000000000000000000006" for ETH
​
tokenOutAddress
string
required
The address of the output token.Example: "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913" for USDC
​
reverse
boolean
If true, the amount parameter represents the desired output amount instead of input amount. Default: false
​
direct
boolean
If true, only direct swaps between the input and output tokens will be considered. Default: false
​
excludeProtocols
array[string]
Array of protocol names to exclude from routing. Default: []
​
slippage
number
required
Maximum acceptable slippage in percentage (0.1 to 49). Example: 0.5 for 0.5% slippage tolerance
​
destination
string
required
The receiver address for the output token.

​
Response

​
route
RouteResponse
The complete response object from the /base/route endpoint. This contains all the necessary information about the optimal route.
​
calldata
CalldataResponse
The hex-encoded calldata to execute the swap through the router contract.

​
Response Types

export class CalldataResponseDto {
  route: RouteResponse;
  calldata: CalldataResponse;
}

export type RouteResponse =
  | {
      success: false;
      errorMessage: string;
    }
  | {
      success: true;
      inputToken: Token;
      inputAmount: string;
      outputToken: Token;
      outputAmount: string;
      estimatedGasUsed: string;
      estimatedGasUsedInUsd: number;
      route: FormattedRoute[];
      time: number;
      bestQuotesByProtocols: any[];
      initial: boolean;
      routeSwapType: route_swap_type;
};

export type FormattedRoute = {
  percent: Percent;
  swaps: FormattedSwap[][];
};
  
export type FormattedSwap = {
  protocol: Protocol;
  poolName: string;
  poolAddress: string;
  fromTokenAddress: string;
  toTokenAddress: string;
  percent: Percent;
  extraData?: any;
};

​
Error Responses

​
Invalid Route

{
  "success": false,
  "error": "Invalid route",
  "details": "The provided route is invalid or expired"
}

​
Invalid Slippage

{
  "success": false,
  "error": "Invalid slippage",
  "details": "Slippage must be between 0.1 and 49"
}

​
Invalid Signer

{
  "success": false,
  "error": "Invalid signer",
  "details": "The provided signer address is not valid"
}

curl --location 'https://api.fibrous.finance/base/calldata?amount=100000000000000000&tokenInAddress=0x0000000000000000000000000000000000000000&tokenOutAddress=0xd9aaec86b65d86f6a7b5b1b0c42ffa531710b6ca&slippage=0.1&destination=0xd9aaec86b65d86f6a7b5b1b0c42ffa531710b6ca' \
--header 'Origin: application/javascript'
 


{
    "route": {
        "success": true,
        "routeSwapType": 0,
        "inputToken": {
            "name": "Wrapped Ether",
            "address": "0x4200000000000000000000000000000000000006",
            "decimals": 18,
            "price": 4729.31
        },
        "inputAmount": "100000000000000000",
        "outputToken": {
            "name": "USD Base Coin",
            "address": "0xd9aaec86b65d86f6a7b5b1b0c42ffa531710b6ca",
            "decimals": 6,
            "price": 0.999727
        },
        "outputAmount": "471974940",
        "route": [
            {
                "percent": "100%",
                "swaps": [
                    [
                        {
                            "protocol": 5,
                            "poolName": "Uniswap V3",
                            "poolAddress": "0x4c36388be6f416a29c8d8eee81c771ce6be14b18",
                            "fromTokenAddress": "0x4200000000000000000000000000000000000006",
                            "toTokenAddress": "0xd9aaec86b65d86f6a7b5b1b0c42ffa531710b6ca",
                            "percent": "83%",
                            "extraData": {
                                "fee": 500
                            }
                        },
                        {
                            "protocol": 5,
                            "poolName": "Uniswap V3",
                            "poolAddress": "0x3ddf264ac95d19e81f8c25f4c300c4e59e424d43",
                            "fromTokenAddress": "0x4200000000000000000000000000000000000006",
                            "toTokenAddress": "0xd9aaec86b65d86f6a7b5b1b0c42ffa531710b6ca",
                            "percent": "10%",
                            "extraData": {
                                "fee": 3000
                            }
                        },
                        {
                            "protocol": 9,
                            "poolName": "PancakeSwap V3",
                            "poolAddress": "0xe58b73ff901325b8b2056b29712c50237242f520",
                            "fromTokenAddress": "0x4200000000000000000000000000000000000006",
                            "toTokenAddress": "0xd9aaec86b65d86f6a7b5b1b0c42ffa531710b6ca",
                            "percent": "7%",
                            "extraData": {
                                "fee": 500
                            }
                        }
                    ]
                ]
            }
        ],
        "estimatedGasUsed": "1108171899576",
        "estimatedGasUsedInUsd": 0.010410898218070664,
        "bestQuotesByProtocols": [],
        "time": 0.654,
        "initial": true
    },
    "calldata": {
        "route": {
            "token_in": "0x4200000000000000000000000000000000000006",
            "token_out": "0xd9aaec86b65d86f6a7b5b1b0c42ffa531710b6ca",
            "amount_in": "100000000000000000",
            "amount_out": "471974940",
            "min_received": "471502966",
            "destination": "0xd9aaec86b65d86f6a7b5b1b0c42ffa531710b6ca",
            "swap_type": 0
        },
        "swap_parameters": [
            {
                "token_in": "0x4200000000000000000000000000000000000006",
                "token_out": "0xd9aaec86b65d86f6a7b5b1b0c42ffa531710b6ca",
                "rate": "830000",
                "protocol_id": "5",
                "pool_address": "0x4c36388be6f416a29c8d8eee81c771ce6be14b18",
                "swap_type": 0,
                "extra_data": "0x00000000000000000000000000000000000000000000000000000000000001f4"
            },
            {
                "token_in": "0x4200000000000000000000000000000000000006",
                "token_out": "0xd9aaec86b65d86f6a7b5b1b0c42ffa531710b6ca",
                "rate": "100000",
                "protocol_id": "5",
                "pool_address": "0x3ddf264ac95d19e81f8c25f4c300c4e59e424d43",
                "swap_type": 0,
                "extra_data": "0x0000000000000000000000000000000000000000000000000000000000000bb8"
            },
            {
                "token_in": "0x4200000000000000000000000000000000000006",
                "token_out": "0xd9aaec86b65d86f6a7b5b1b0c42ffa531710b6ca",
                "rate": "70000",
                "protocol_id": "9",
                "pool_address": "0xe58b73ff901325b8b2056b29712c50237242f520",
                "swap_type": 0,
                "extra_data": "0x00000000000000000000000000000000000000000000000000000000000001f4"
            }
        ]
    }
}

​
Tips

  1. Always verify the min_received amount matches your expectations
  2. Check that the destination address is correct
  3. Consider gas costs when splitting across multiple protocols
  4. Store the route response before requesting calldata

​
Rate Limits

Please refer to our rate limiting documentation for details about request limits and quotas.