{
  "name": "Monitor USDT Balance on Telegram",
  "tags": [],
  "nodes": [
    {
      "id": "monitor-usdt-balance-on-telegram-0",
      "name": "Balance Changed?",
      "type": "n8n-nodes-base.if",
      "position": [
        -40,
        0
      ],
      "parameters": {
        "conditions": {
          "boolean": [
            {
              "value1": "={{$json.balanceChanged}}",
              "value2": true
            }
          ]
        }
      },
      "typeVersion": 1
    },
    {
      "id": "monitor-usdt-balance-on-telegram-1",
      "name": "Balance Changed.",
      "type": "n8n-nodes-base.telegram",
      "position": [
        320,
        -140
      ],
      "parameters": {
        "text": "={{ $json.text }}",
        "chatId": "YOUR_TELEGRAM_CHAT_ID",
        "additionalFields": {
          "parse_mode": "Markdown",
          "appendAttribution": false
        }
      },
      "typeVersion": 1
    },
    {
      "id": "monitor-usdt-balance-on-telegram-2",
      "name": "Balance Not Changed.",
      "type": "n8n-nodes-base.telegram",
      "position": [
        320,
        20
      ],
      "parameters": {
        "text": "={{ $json.text }}",
        "chatId": "YOUR_TELEGRAM_CHAT_ID",
        "additionalFields": {
          "parse_mode": "Markdown",
          "appendAttribution": false
        }
      },
      "typeVersion": 1
    },
    {
      "id": "monitor-usdt-balance-on-telegram-3",
      "name": "userData",
      "type": "n8n-nodes-base.set",
      "position": [
        -780,
        0
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "4455d1e7-a489-4ab6-a526-4fc755db99d0",
              "name": "Your Wallet Address",
              "type": "string",
              "value": "YOUR_ETHEREUM_WALLET_ADDRESS"
            },
            {
              "id": "971ea723-e3de-4cff-b4e7-5899f3d8fb00",
              "name": "USDT ERC-20 Token Address",
              "type": "string",
              "value": "0xdAC17F958D2ee523a2206206994597C13D831ec7"
            }
          ]
        }
      },
      "typeVersion": 3.4
    },
    {
      "id": "monitor-usdt-balance-on-telegram-4",
      "name": "balanceChecker",
      "type": "n8n-nodes-base.code",
      "position": [
        -280,
        0
      ],
      "parameters": {
        "jsCode": "function calculateUsdt({balance,wallet,contract,previous}){\n if(typeof balance!=='string'||!/^\\d+$/.test(balance))throw Error('Invalid token balance');\n if(previous!=null&&(typeof previous!=='object'||typeof previous.key!=='string'||typeof previous.balance!=='string'||!/^\\d+$/.test(previous.balance)))throw Error('Invalid saved balance');\n const key=wallet.toLowerCase()+':'+contract.toLowerCase(),last=previous?.key===key&&typeof previous.balance==='string'&&/^\\d+$/.test(previous.balance)?previous.balance:balance;\n const amount=x=>{const s=x.replace(/^0+(?=\\d)/,'').padStart(7,'0'),whole=s.slice(0,-6),fraction=s.slice(-6).replace(/0+$/,'');return fraction?whole+'.'+fraction:whole};\n const changed=last!==balance,text=changed?`🚨 *USDT Balance Change!*\\n\\nWallet Address: ${wallet}\\n\\n🔴 Previous Balance: ${amount(last)} USDT\\n\\n🟢 New Balance: ${amount(balance)} USDT`:'Balance Unchanged. USDT balance remained stable.';\n return {next:{key,balance},changed,text};\n}\n\nconst input=$('userData').first().json, wallet=input['Your Wallet Address'],contract=input['USDT ERC-20 Token Address'];if(!/^0x[0-9a-fA-F]{40}$/.test(wallet)||!/^0x[0-9a-fA-F]{40}$/.test(contract)||$json.status!=='1')throw Error('Invalid balance response or address');const store=$getWorkflowStaticData('global'),r=calculateUsdt({balance:$json.result,wallet,contract,previous:store.usdtBalance});store.usdtBalance=r.next;return [{json:{balanceChanged:r.changed,previousBalance:r.next.balance,currentBalance:$json.result,walletAddress:wallet,text:r.text}}];"
      },
      "typeVersion": 2
    },
    {
      "id": "monitor-usdt-balance-on-telegram-5",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -1040,
        -180
      ],
      "parameters": {
        "color": 4,
        "width": 1540,
        "height": 400,
        "content": "## USDT ERC-20 Wallet Balance Tracker\n**This workflow** Is a basic concept of integrating your ERC-20 wallet with n8n nodes."
      },
      "typeVersion": 1
    },
    {
      "id": "monitor-usdt-balance-on-telegram-6",
      "name": "Check Balance Every 5 Minutes",
      "type": "n8n-nodes-base.cron",
      "position": [
        -1000,
        0
      ],
      "parameters": {
        "triggerTimes": {
          "item": [
            {
              "mode": "everyX",
              "unit": "minutes",
              "value": 5
            }
          ]
        }
      },
      "typeVersion": 1
    },
    {
      "id": "monitor-usdt-balance-on-telegram-7",
      "name": "Fetch USDT Balance from Etherscan",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        -480,
        0
      ],
      "parameters": {
        "method": "GET",
        "url": "https://api.etherscan.io/v2/api",
        "authentication": "genericCredentialType",
        "genericAuthType": "httpQueryAuth",
        "sendQuery": true,
        "queryParameters": {
          "parameters": [
            {
              "name": "chainid",
              "value": "1"
            },
            {
              "name": "module",
              "value": "account"
            },
            {
              "name": "action",
              "value": "tokenbalance"
            },
            {
              "name": "address",
              "value": "={{ $json[\"Your Wallet Address\"] }}"
            },
            {
              "name": "contractaddress",
              "value": "={{ $json[\"USDT ERC-20 Token Address\"] }}"
            },
            {
              "name": "tag",
              "value": "latest"
            }
          ]
        },
        "options": {
          "response": {
            "response": {
              "responseFormat": "json"
            }
          }
        }
      },
      "typeVersion": 4.2
    }
  ],
  "active": false,
  "pinData": {},
  "settings": {
    "executionOrder": "v1"
  },
  "connections": {
    "userData": {
      "main": [
        [
          {
            "node": "Fetch USDT Balance from Etherscan",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "balanceChecker": {
      "main": [
        [
          {
            "node": "Balance Changed?",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Balance Changed.": {
      "main": [
        []
      ]
    },
    "Balance Changed?": {
      "main": [
        [
          {
            "node": "Balance Changed.",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "Balance Not Changed.",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Check Balance Every 5 Minutes": {
      "main": [
        [
          {
            "node": "userData",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Fetch USDT Balance from Etherscan": {
      "main": [
        [
          {
            "node": "balanceChecker",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  }
}