App error alerts on Telegram

Send errors from your app or server to a webhook and get a clear alert on Telegram within seconds.

Easy Saves ~2 hours/month Developer & ITBy Flowngn team

Works with n8n · Make · Zapier

Stay on top of things

How it works

Trigger: Webhook — your app reports an error

Your app POSTs the error (app, level, message, url) to the webhook.
Format it into a short alert.
Send errors and fatal crashes to Telegram; skip warnings.

Diagram

Trigger App Logic Code

Code

JavaScript used in the Code step — already included in the template below.

Format alert · Code node

// Mode: Run Once for Each Item
// Shapes an error report from your app (or Sentry, Uptime Kuma, etc.) into a Telegram alert.
// Send JSON like: { "app": "shop-api", "level": "error", "message": "...", "url": "...", "user": "..." }
const b = $json.body || {};
const level = String(b.level || "error").toLowerCase();
const icon = { fatal: "🔥", error: "🚨", warning: "⚠️" }[level] || "ℹ️";

return {
  json: {
    level,
    message:
      `${icon} ${level.toUpperCase()} in ${b.app || "your app"}\n` +
      String(b.message || "No message").slice(0, 500) +
      (b.url ? `\n🔗 ${b.url}` : "") +
      (b.user ? `\n👤 ${b.user}` : ""),
  },
};

Build it

Pick your tool — same automation, step by step.

Copy and paste straight into an n8n canvas (Ctrl+V), or download and use Import from File. Then connect your own credentials and replace every YOUR_… placeholder.

Workflow JSON

Show code (143 lines)

{
  "name": "App error alerts on Telegram (Flowngn)",
  "nodes": [
    {
      "parameters": {
        "content": "## App error alerts on Telegram\nSend errors from your app or server to a webhook and get a clear alert on Telegram within seconds.\n\n**Setup**\n1. Open each node and connect your own credentials.\n2. Replace every YOUR_… placeholder.\n3. Test once, then activate.\n\nFree template from Flowngn",
        "height": 260,
        "width": 340
      },
      "id": "292c1d67-c80f-4b2d-ac0c-65a1549bb117",
      "name": "Setup notes",
      "type": "n8n-nodes-base.stickyNote",
      "typeVersion": 1,
      "position": [
        -420,
        -60
      ]
    },
    {
      "parameters": {
        "httpMethod": "POST",
        "path": "app-error",
        "options": {}
      },
      "id": "292c1d67-c80f-4b2d-ac0c-65a1549bb117",
      "name": "Error report",
      "type": "n8n-nodes-base.webhook",
      "typeVersion": 2,
      "position": [
        0,
        0
      ],
      "webhookId": "292c1d67-c80f-4b2d-ac0c-65a1549bb117"
    },
    {
      "parameters": {
        "jsCode": "// Mode: Run Once for Each Item\n// Shapes an error report from your app (or Sentry, Uptime Kuma, etc.) into a Telegram alert.\n// Send JSON like: { \"app\": \"shop-api\", \"level\": \"error\", \"message\": \"...\", \"url\": \"...\", \"user\": \"...\" }\nconst b = $json.body || {};\nconst level = String(b.level || \"error\").toLowerCase();\nconst icon = { fatal: \"🔥\", error: \"🚨\", warning: \"⚠️\" }[level] || \"ℹ️\";\n\nreturn {\n  json: {\n    level,\n    message:\n      `${icon} ${level.toUpperCase()} in ${b.app || \"your app\"}\\n` +\n      String(b.message || \"No message\").slice(0, 500) +\n      (b.url ? `\\n🔗 ${b.url}` : \"\") +\n      (b.user ? `\\n👤 ${b.user}` : \"\"),\n  },\n};",
        "mode": "runOnceForEachItem"
      },
      "id": "292c1d67-c80f-4b2d-ac0c-65a1549bb117",
      "name": "Format alert",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        300,
        0
      ]
    },
    {
      "parameters": {
        "conditions": {
          "options": {
            "caseSensitive": true,
            "leftValue": "",
            "typeValidation": "loose"
          },
          "conditions": [
            {
              "id": "c1",
              "leftValue": "={{ ['error', 'fatal'].includes($json.level) }}",
              "rightValue": "",
              "operator": {
                "type": "boolean",
                "operation": "true",
                "singleValue": true
              }
            }
          ],
          "combinator": "and"
        },
        "options": {}
      },
      "id": "292c1d67-c80f-4b2d-ac0c-65a1549bb117",
      "name": "Error or worse?",
      "type": "n8n-nodes-base.if",
      "typeVersion": 2.2,
      "position": [
        600,
        0
      ]
    },
    {
      "parameters": {
        "chatId": "YOUR_CHAT_ID",
        "text": "={{ $json.message }}",
        "additionalFields": {
          "appendAttribution": false
        }
      },
      "id": "292c1d67-c80f-4b2d-ac0c-65a1549bb117",
      "name": "Alert on Telegram",
      "type": "n8n-nodes-base.telegram",
      "typeVersion": 1.2,
      "position": [
        900,
        0
      ]
    }
  ],
  "connections": {
    "Error report": {
      "main": [
        [
          {
            "node": "Format alert",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Format alert": {
      "main": [
        [
          {
            "node": "Error or worse?",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Error or worse?": {
      "main": [
        [
          {
            "node": "Alert on Telegram",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "pinData": {},
  "settings": {
    "executionOrder": "v1"
  },
  "meta": {
    "templateCredsSetupCompleted": false
  },
  "tags": []
}

Open in the playground to edit →

Tips

Never send passwords, tokens or customer data in error messages.

Related flows

Developer & ITEasy

Free website uptime monitor

Check your website every 5 minutes and get a Telegram alert if it goes down.

HTTP Request → Telegram4h/mo

Developer & ITEasy

SSL certificate expiry alert

Get a Telegram alert 14 days before any of your websites' SSL certificates expire.

HTTP Request → Telegram1h/mo

Developer & ITEasy

Domain expiry alert on Telegram

Every week, check when your domains expire and get a Telegram alert 30 days before.

HTTP Request → Telegram1h/mo