{
  "x402Version": 2,
  "id": 1231,
  "slug": "1231",
  "resource": "https://3route.agents.bakingbad.dev/api/v6.1/:chainId/swap",
  "description": "Build an unsigned swap transaction for the best route. Builds an unsigned transaction for the selected route. Compare it with a fresh quote, validate every returned transaction field, obtain explicit signing approval, and broadcast it through the selected chain's RPC. The compatibility parameters permit and usePermit2 are ignored. For an ERC-20 source, approve the router in tx.to for at least srcAmount before executing the returned transaction.",
  "type": "http",
  "accepts": [
    {
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "payTo": "AZ59bSccJmQu8Ljic1c5zxhjZitVbbutUYjBNwKLqfyD",
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "amount": "1000",
      "maxTimeoutSeconds": 300
    },
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0x5D89060682fcE50eCaa7600aF6A5645Bd2b107Eb",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "1000",
      "maxTimeoutSeconds": 300
    },
    {
      "scheme": "batch-settlement",
      "network": "eip155:8453",
      "payTo": "0x5D89060682fcE50eCaa7600aF6A5645Bd2b107Eb",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "1000",
      "maxTimeoutSeconds": 300
    },
    {
      "scheme": "exact",
      "network": "eip155:42793",
      "payTo": "0x5D89060682fcE50eCaa7600aF6A5645Bd2b107Eb",
      "asset": "0x796Ea11Fa2dD751eD01b53C372fFDB4AAa8f00F9",
      "amount": "1000",
      "maxTimeoutSeconds": 300
    }
  ],
  "outputSchema": {
    "bazaar": {
      "info": {
        "input": {
          "method": "GET",
          "pathParams": {
            "chainId": "42793"
          },
          "queryParams": {
            "amount": "1000000000000000000",
            "dst": "0x2222222222222222222222222222222222222222",
            "fee": 0,
            "from": "0x1111111111111111111111111111111111111111",
            "gasPrice": "1000000000",
            "includeBlockNumber": false,
            "includeProtocols": false,
            "includeTokensInfo": false,
            "isExactOutput": false,
            "receiver": "0x1111111111111111111111111111111111111111",
            "referrer": "0x1111111111111111111111111111111111111111",
            "slippage": 1,
            "src": "0x0000000000000000000000000000000000000000"
          },
          "type": "http"
        },
        "output": {
          "example": {
            "dstAmount": "950000",
            "dstAmountMin": "940500",
            "gas": 210000,
            "srcAmount": "1000000000000000000",
            "tx": {
              "data": "0x1234",
              "from": "0x1111111111111111111111111111111111111111",
              "gas": "210000",
              "gasPrice": "1000000000",
              "to": "0x2222222222222222222222222222222222222222",
              "value": "1000000000000000000"
            }
          },
          "type": "json"
        }
      },
      "routeTemplate": "/api/v6.1/:chainId/swap",
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "pathParams": {
                "additionalProperties": false,
                "properties": {
                  "chainId": {
                    "enum": [
                      "4663",
                      "42793",
                      "128064"
                    ],
                    "example": "4663",
                    "pattern": "^[0-9]+$",
                    "type": "string"
                  }
                },
                "required": [
                  "chainId"
                ],
                "type": "object"
              },
              "queryParams": {
                "additionalProperties": false,
                "properties": {
                  "amount": {
                    "example": "1000000000000000000",
                    "pattern": "^[0-9]+$",
                    "type": "string"
                  },
                  "dst": {
                    "example": "0x2222222222222222222222222222222222222222",
                    "pattern": "^0x[0-9a-fA-F]{40}$",
                    "type": "string"
                  },
                  "excludedProtocols": {
                    "type": "string"
                  },
                  "fee": {
                    "default": 0,
                    "maximum": 3,
                    "minimum": 0,
                    "type": "number"
                  },
                  "from": {
                    "example": "0x1111111111111111111111111111111111111111",
                    "pattern": "^0x[0-9a-fA-F]{40}$",
                    "type": "string"
                  },
                  "gasPrice": {
                    "example": "1000000000",
                    "pattern": "^[0-9]+$",
                    "type": "string"
                  },
                  "includeBlockNumber": {
                    "default": false,
                    "type": "boolean"
                  },
                  "includeProtocols": {
                    "default": false,
                    "type": "boolean"
                  },
                  "includeTokensInfo": {
                    "default": false,
                    "type": "boolean"
                  },
                  "isExactOutput": {
                    "default": false,
                    "type": "boolean"
                  },
                  "protocols": {
                    "type": "string"
                  },
                  "receiver": {
                    "example": "0x1111111111111111111111111111111111111111",
                    "pattern": "^0x[0-9a-fA-F]{40}$",
                    "type": "string"
                  },
                  "referrer": {
                    "example": "0x1111111111111111111111111111111111111111",
                    "pattern": "^0x[0-9a-fA-F]{40}$",
                    "type": "string"
                  },
                  "slippage": {
                    "default": 1,
                    "example": 1,
                    "maximum": 50,
                    "minimum": 0,
                    "type": "number"
                  },
                  "src": {
                    "example": "0x0000000000000000000000000000000000000000",
                    "pattern": "^0x[0-9a-fA-F]{40}$",
                    "type": "string"
                  }
                },
                "required": [
                  "src",
                  "dst",
                  "amount",
                  "from"
                ],
                "type": "object"
              },
              "type": {
                "const": "http",
                "type": "string"
              }
            },
            "required": [
              "type",
              "method"
            ],
            "type": "object"
          },
          "output": {
            "properties": {
              "example": {
                "type": "object"
              },
              "type": {
                "type": "string"
              }
            },
            "required": [
              "type"
            ],
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    },
    "erc20ApprovalGasSponsoring": {
      "info": {
        "description": "The facilitator broadcasts a pre-signed ERC-20 approve() transaction to grant Permit2 allowance.",
        "version": "1"
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "amount": {
            "description": "The amount approved (uint256). Always MaxUint256.",
            "pattern": "^[0-9]+$",
            "type": "string"
          },
          "asset": {
            "description": "The address of the ERC-20 token contract.",
            "pattern": "^0x[a-fA-F0-9]{40}$",
            "type": "string"
          },
          "from": {
            "description": "The address of the sender (token owner).",
            "pattern": "^0x[a-fA-F0-9]{40}$",
            "type": "string"
          },
          "signedTransaction": {
            "description": "The RLP-encoded signed EIP-1559 transaction as a hex string.",
            "pattern": "^0x[a-fA-F0-9]+$",
            "type": "string"
          },
          "spender": {
            "description": "The address of the spender (Canonical Permit2).",
            "pattern": "^0x[a-fA-F0-9]{40}$",
            "type": "string"
          },
          "version": {
            "description": "Schema version identifier.",
            "pattern": "^[0-9]+(\\.[0-9]+)*$",
            "type": "string"
          }
        },
        "required": [
          "from",
          "asset",
          "spender",
          "amount",
          "signedTransaction",
          "version"
        ],
        "type": "object"
      }
    }
  },
  "tags": [
    "bazaar",
    "erc20ApprovalGasSponsoring"
  ],
  "sourceHost": "3route.agents.bakingbad.dev",
  "lastUpdated": "2026-08-21T13:53:05.999Z",
  "quality": {
    "calls30d": 7,
    "uniquePayers30d": 1,
    "lastCalledAt": "2026-08-21T13:53:05.495Z"
  },
  "liveness": {},
  "verified": false,
  "featured": false,
  "provider": {
    "host": "3route.agents.bakingbad.dev",
    "manifest_name": "3route.agents.bakingbad.dev",
    "source": "cdp-mirror",
    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-09-18T22:00:31.484Z"
  }
}