{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://uniblock.dev/schemas/uniblock/webhook-event.json",
  "title": "Uniblock Webhook Event",
  "description": "Schema representing webhook event payloads delivered by Uniblock when blockchain events matching configured filters are detected.",
  "type": "object",
  "required": ["metadata", "data"],
  "properties": {
    "metadata": {
      "$ref": "#/$defs/WebhookMetadata"
    },
    "data": {
      "type": "object",
      "description": "The event-specific data payload. Structure varies by event type."
    }
  },
  "$defs": {
    "WebhookMetadata": {
      "type": "object",
      "description": "Common metadata included in all webhook event payloads.",
      "required": ["webhookId", "eventType", "chain", "timestamp"],
      "properties": {
        "webhookId": {
          "type": "string",
          "description": "The unique identifier of the webhook subscription that triggered this notification."
        },
        "eventType": {
          "type": "string",
          "description": "The type of blockchain event that triggered the webhook.",
          "enum": [
            "ADDRESS_ACTIVITY",
            "TOKEN_TRANSFER",
            "NFT_TRANSFER",
            "MINED_TRANSACTION"
          ]
        },
        "chain": {
          "type": "string",
          "description": "The blockchain network on which the event occurred."
        },
        "timestamp": {
          "type": "string",
          "format": "date-time",
          "description": "The ISO 8601 timestamp when the event was detected by Uniblock."
        }
      }
    },
    "AddressActivityData": {
      "type": "object",
      "description": "Data payload for address activity events.",
      "required": ["address", "transactionHash"],
      "properties": {
        "address": {
          "type": "string",
          "description": "The monitored address involved in the activity."
        },
        "direction": {
          "type": "string",
          "description": "Whether the address was the sender or receiver.",
          "enum": ["inbound", "outbound"]
        },
        "transactionHash": {
          "type": "string",
          "description": "The hash of the transaction.",
          "pattern": "^0x[a-fA-F0-9]{64}$"
        },
        "from": {
          "type": "string",
          "description": "The sender address."
        },
        "to": {
          "type": "string",
          "description": "The recipient address."
        },
        "value": {
          "type": "string",
          "description": "The value transferred in the native token's smallest unit."
        },
        "blockNumber": {
          "type": "integer",
          "description": "The block number containing the transaction.",
          "minimum": 0
        },
        "blockTimestamp": {
          "type": "string",
          "format": "date-time",
          "description": "The timestamp of the block."
        }
      }
    },
    "TokenTransferData": {
      "type": "object",
      "description": "Data payload for token transfer events.",
      "required": ["transactionHash", "contractAddress"],
      "properties": {
        "transactionHash": {
          "type": "string",
          "description": "The hash of the transaction containing the transfer.",
          "pattern": "^0x[a-fA-F0-9]{64}$"
        },
        "from": {
          "type": "string",
          "description": "The sender address."
        },
        "to": {
          "type": "string",
          "description": "The recipient address."
        },
        "contractAddress": {
          "type": "string",
          "description": "The smart contract address of the transferred token."
        },
        "tokenName": {
          "type": "string",
          "description": "The name of the transferred token."
        },
        "tokenSymbol": {
          "type": "string",
          "description": "The symbol of the transferred token."
        },
        "value": {
          "type": "string",
          "description": "The amount transferred in the token's smallest unit."
        },
        "decimals": {
          "type": "integer",
          "description": "The number of decimal places for the token.",
          "minimum": 0
        },
        "blockNumber": {
          "type": "integer",
          "description": "The block number containing the transfer.",
          "minimum": 0
        },
        "blockTimestamp": {
          "type": "string",
          "format": "date-time",
          "description": "The timestamp of the block."
        }
      }
    },
    "NftTransferData": {
      "type": "object",
      "description": "Data payload for NFT transfer events.",
      "required": ["transactionHash", "contractAddress", "tokenId"],
      "properties": {
        "transactionHash": {
          "type": "string",
          "description": "The hash of the transaction containing the transfer.",
          "pattern": "^0x[a-fA-F0-9]{64}$"
        },
        "from": {
          "type": "string",
          "description": "The sender address."
        },
        "to": {
          "type": "string",
          "description": "The recipient address."
        },
        "contractAddress": {
          "type": "string",
          "description": "The smart contract address of the NFT collection."
        },
        "tokenId": {
          "type": "string",
          "description": "The token ID of the transferred NFT."
        },
        "tokenType": {
          "type": "string",
          "description": "The token standard type.",
          "enum": ["ERC-721", "ERC-1155"]
        },
        "quantity": {
          "type": "integer",
          "description": "The number of tokens transferred (relevant for ERC-1155).",
          "minimum": 1
        },
        "blockNumber": {
          "type": "integer",
          "description": "The block number containing the transfer.",
          "minimum": 0
        },
        "blockTimestamp": {
          "type": "string",
          "format": "date-time",
          "description": "The timestamp of the block."
        }
      }
    },
    "MinedTransactionData": {
      "type": "object",
      "description": "Data payload for mined transaction events.",
      "required": ["transactionHash"],
      "properties": {
        "transactionHash": {
          "type": "string",
          "description": "The hash of the mined transaction.",
          "pattern": "^0x[a-fA-F0-9]{64}$"
        },
        "from": {
          "type": "string",
          "description": "The sender address."
        },
        "to": {
          "type": "string",
          "description": "The recipient address."
        },
        "value": {
          "type": "string",
          "description": "The value transferred in the native token's smallest unit."
        },
        "status": {
          "type": "string",
          "description": "The execution status of the transaction.",
          "enum": ["success", "failed"]
        },
        "blockNumber": {
          "type": "integer",
          "description": "The block number in which the transaction was mined.",
          "minimum": 0
        },
        "blockTimestamp": {
          "type": "string",
          "format": "date-time",
          "description": "The timestamp of the block."
        },
        "gasUsed": {
          "type": "string",
          "description": "The amount of gas consumed by the transaction."
        }
      }
    }
  }
}