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mirrored listing x402 eip155:8453solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp

Decode and explain any EVM blockchain transaction across 11 chains (Base, Ethereum, Arbitr

Decode and explain any EVM blockchain transaction across 11 chains (Base, Ethereum, Arbitrum, Optimism, Avalanche, Polygon, Mantle, Monad, Plasma, BSC, Hyperliquid). Get a human-readable summary of swaps, transfers, approvals, DeFi interactions, and more.

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10000 (raw units)
price
5
calls / 30d
3
unique payers
2026-09-03
updated

Provider

x402.ottoai.services · discovered, not yet claimed by its owner

Payment (x402 accepts[])

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payTo": "6XcSfqJHr9vNW2vbiRaMqUYVm7shDgLepca54wUTDPN5",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "10000",
    "maxTimeoutSeconds": 300
  }
]

Output schema

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "chain": "base",
          "outputLevel": "summary",
          "txHash": "0x91985d4134da826cd05ee7e629b68f0d3ebbbe14198c7d98a4f9e50c1ff46041"
        },
        "bodyType": "json",
        "method": "POST",
        "type": "http"
      },
      "output": {
        "example": {
          "chain": "Base",
          "explorerUrl": "https://basescan.org/tx/0x...",
          "status": "success",
          "summary": "Swapped 0.5 ETH for 1,247.83 USDC via Uniswap V3",
          "txHash": "0x..."
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "body": {
              "properties": {
                "chain": {
                  "description": "Blockchain network (default: base). 11 EVM chains supported.",
                  "enum": [
                    "base",
                    "ethereum",
                    "arbitrum",
                    "optimism",
                    "avalanche",
                    "polygon",
                    "mantle",
                    "monad",
                    "plasma",
                    "bsc",
                    "hyperliquid"
                  ],
                  "type": "string"
                },
                "outputLevel": {
                  "description": "'summary' = one-liner, 'detailed' = full breakdown",
                  "enum": [
                    "summary",
                    "detailed"
                  ],
                  "type": "string"
                },
                "txHash": {
                  "description": "Transaction hash (0x-prefixed, 64 hex characters)",
                  "pattern": "^0x[a-fA-F0-9]{64}$",
                  "type": "string"
                }
              },
              "required": [
                "txHash"
              ],
              "type": "object"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "properties": {
                "chain": {
                  "description": "Blockchain name",
                  "type": "string"
                },
                "details": {
                  "description": "Structured decode — from, to, value, method, selector, signature, pattern, events (always included; interpretation prose only when outputLevel=detailed)",
                  "type": "object"
                },
                "error": {
                  "description": "Error message if failed",
                  "type": "string"
                },
                "explorerUrl": {
                  "description": "Link to block explorer",
                  "type": "string"
                },
                "status": {
                  "enum": [
                    "success",
                    "failed"
                  ],
                  "type": "string"
                },
                "summary": {
                  "description": "Human-readable transaction summary",
                  "type": "string"
                },
                "txHash": {
                  "description": "Transaction hash",
                  "type": "string"
                }
              },
              "required": [
                "status"
              ],
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  },
  "builder-code": {
    "info": {
      "a": "bc_hc2dhq09"
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "additionalProperties": false,
      "properties": {
        "a": {
          "description": "App builder code",
          "pattern": "^[a-z0-9_]{1,32}$",
          "type": "string"
        },
        "s": {
          "description": "Service builder codes",
          "items": {
            "pattern": "^[a-z0-9_]{1,32}$",
            "type": "string"
          },
          "type": "array"
        },
        "w": {
          "description": "Wallet builder code",
          "pattern": "^[a-z0-9_]{1,32}$",
          "type": "string"
        }
      },
      "type": "object"
    }
  },
  "offer-receipt": {
    "info": {
      "offers": [
        {
          "acceptIndex": 0,
          "format": "eip712",
          "payload": {
            "amount": "10000",
            "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "network": "eip155:8453",
            "payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
            "resourceUrl": "https://x402.ottoai.services/tx-explainer",
            "scheme": "exact",
            "validUntil": 1788443224,
            "version": 1
          },
          "signature": "0x57d0c104f3eee6de6209e021d91c01877117374f786234e1f8fc93f61e53e1c2360c44e75e8c325c05ec01fdac490552ce100b76ec677aad1eb45b1ca0a2e36f1c"
        },
        {
          "acceptIndex": 1,
          "format": "eip712",
          "payload": {
            "amount": "10000",
            "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "network": "eip155:8453",
            "payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
            "resourceUrl": "https://x402.ottoai.services/tx-explainer",
            "scheme": "exact",
            "validUntil": 1788443224,
            "version": 1
          },
          "signature": "0x57d0c104f3eee6de6209e021d91c01877117374f786234e1f8fc93f61e53e1c2360c44e75e8c325c05ec01fdac490552ce100b76ec677aad1eb45b1ca0a2e36f1c"
        },
        {
          "acceptIndex": 2,
          "format": "eip712",
          "payload": {
            "amount": "10000",
            "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
            "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
            "payTo": "6XcSfqJHr9vNW2vbiRaMqUYVm7shDgLepca54wUTDPN5",
            "resourceUrl": "https://x402.ottoai.services/tx-explainer",
            "scheme": "exact",
            "validUntil": 1788443224,
            "version": 1
          },
          "signature": "0xfa0b66d5e0005c31d652b0cb1c2452cf9a67e6e6102c68bd02b2afa21cd71e8a00e5d06a05089e6a782790d8ab9c6510945c5310daf186518a54346b521216e41c"
        }
      ]
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "offers": {
          "items": {
            "properties": {
              "acceptIndex": {
                "type": "integer"
              },
              "format": {
                "type": "string"
              },
              "payload": {
                "properties": {
                  "amount": {
                    "type": "string"
                  },
                  "asset": {
                    "type": "string"
                  },
                  "network": {
                    "type": "string"
                  },
                  "payTo": {
                    "type": "string"
                  },
                  "resourceUrl": {
                    "type": "string"
                  },
                  "scheme": {
                    "type": "string"
                  },
                  "validUntil": {
                    "type": "integer"
                  },
                  "version": {
                    "type": "integer"
                  }
                },
                "required": [
                  "version",
                  "resourceUrl",
                  "scheme",
                  "network",
                  "asset",
                  "payTo",
                  "amount"
                ],
                "type": "object"
              },
              "signature": {
                "type": "string"
              }
            },
            "required": [
              "format",
              "signature"
            ],
            "type": "object"
          },
          "type": "array"
        }
      },
      "required": [
        "offers"
      ],
      "type": "object"
    }
  }
}

Use it

curl

curl "https://x402.ottoai.services/tx-explainer"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://x402.ottoai.services/tx-explainer");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://x402.ottoai.services/tx-explainer")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Machine-readable

Everything on this page is also available as clean JSON at /resources/178.json, and this resource appears in /discovery/resources and /discovery/search.