1. 转写評価エージェント
上級
これはDocument Extraction, Multimodal AI分野の自動化ワークフローで、22個のノードを含みます。主にIf, Set, Switch, Telegram, HttpRequestなどのノードを使用。 TelegramとGroq Whisperによる音声文字起こし
前提条件
- •Telegram Bot Token
- •ターゲットAPIの認証情報が必要な場合あり
ワークフロープレビュー
ノード接続関係を可視化、ズームとパンをサポート
ワークフローをエクスポート
以下のJSON設定をn8nにインポートして、このワークフローを使用できます
{
"id": "BN02jX48DXzgyJFd",
"meta": {
"instanceId": "733e9abfd67f4f2666a76557fe5d7598ae7705aa1e6ff21081cb972137b3c8b4",
"templateCredsSetupCompleted": true
},
"name": "Audio Transcript - n8n Creator (Template)",
"tags": [
{
"id": "K8YLAjjyi0ToB8gy",
"name": "playground",
"createdAt": "2025-10-09T12:08:34.847Z",
"updatedAt": "2025-10-09T12:08:34.847Z"
}
],
"nodes": [
{
"id": "ddd06891-12f5-4227-81cd-03fd55b864fe",
"name": "Telegram: メッセージ受信",
"type": "n8n-nodes-base.telegramTrigger",
"position": [
-864,
48
],
"webhookId": "823f9309-3b41-4ed6-995f-cf5b657970ee",
"parameters": {
"updates": [
"message"
],
"additionalFields": {
"chatIds": "8464412504"
}
},
"credentials": {
"telegramApi": {
"id": "s9JmQ5AGImJ32oBQ",
"name": "abhiman1bot - Telegram"
}
},
"typeVersion": 1.2
},
{
"id": "fb897823-f7ef-4400-9e43-cf2b25b1c6c8",
"name": "Switch (メッセージタイプを確認)",
"type": "n8n-nodes-base.switch",
"position": [
-432,
32
],
"parameters": {
"rules": {
"values": [
{
"outputKey": "audio",
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "da43a983-aec8-424c-956d-a4f335ec3639",
"operator": {
"type": "string",
"operation": "exists",
"singleValue": true
},
"leftValue": "={{ $json.message.audio.file_id }}",
"rightValue": ""
}
]
},
"renameOutput": true
},
{
"outputKey": "voice",
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "b5b7d9ac-0a1a-4b65-bde4-8ab98ca2d8f4",
"operator": {
"type": "string",
"operation": "exists",
"singleValue": true
},
"leftValue": "={{ $json.message.voice.file_id }}",
"rightValue": ""
}
]
},
"renameOutput": true
},
{
"outputKey": "error",
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "68cd3161-3841-402d-8df7-6b5e0aa062e0",
"operator": {
"type": "string",
"operation": "exists",
"singleValue": true
},
"leftValue": "={{ $json.message.text }}",
"rightValue": ""
}
]
},
"renameOutput": true
}
]
},
"options": {}
},
"typeVersion": 3.3
},
{
"id": "2ff93d32-9942-47d4-9500-91fb50a62d9d",
"name": "Telegram: 未対応のメッセージタイプ",
"type": "n8n-nodes-base.telegram",
"position": [
-448,
320
],
"webhookId": "b0f48834-4a46-4378-9f52-ab563c2ccc8d",
"parameters": {
"text": "Yo! I only take audio😅, drop a audio message instead!",
"chatId": "={{ $('Telegram: Receive Message').item.json.message.chat.id }}",
"additionalFields": {
"appendAttribution": false
}
},
"credentials": {
"telegramApi": {
"id": "s9JmQ5AGImJ32oBQ",
"name": "abhiman1bot - Telegram"
}
},
"typeVersion": 1.2
},
{
"id": "ed090526-76d4-417d-9e2b-9eb5a1043192",
"name": "Set Node (audio type)",
"type": "n8n-nodes-base.set",
"position": [
-80,
-48
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "ed1a6e35-7378-4907-be8d-70946ffd0326",
"name": "fileid",
"type": "string",
"value": "={{ $('Telegram: Receive Message').item.json.message.audio.file_id }}"
}
]
}
},
"typeVersion": 3.4
},
{
"id": "60c0e970-e175-481d-9cd4-d50a83ae67f6",
"name": "Set Node (voice type)",
"type": "n8n-nodes-base.set",
"position": [
-80,
112
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "ed1a6e35-7378-4907-be8d-70946ffd0326",
"name": "fileid",
"type": "string",
"value": "={{ $('Telegram: Receive Message').item.json.message.voice.file_id }}"
}
]
}
},
"typeVersion": 3.4
},
{
"id": "4a1dd34d-aadd-4b4a-be92-1090529d111c",
"name": "Telegram: 音声ファイルをダウンロード",
"type": "n8n-nodes-base.telegram",
"position": [
400,
32
],
"webhookId": "b4d5787b-b958-4d86-b0bb-98b5f6703dba",
"parameters": {
"fileId": "={{ $json.fileid }}",
"download": false,
"resource": "file"
},
"credentials": {
"telegramApi": {
"id": "s9JmQ5AGImJ32oBQ",
"name": "abhiman1bot - Telegram"
}
},
"typeVersion": 1.2
},
{
"id": "1f20c4c9-fea0-4bc0-b424-1bb04813f40d",
"name": "HTTP - Transcribe Audio (Groq)",
"type": "n8n-nodes-base.httpRequest",
"position": [
1040,
32
],
"parameters": {
"url": "https://api.groq.com/openai/v1/audio/transcriptions",
"method": "POST",
"options": {
"response": {
"response": {
"responseFormat": "json"
}
}
},
"sendBody": true,
"contentType": "multipart-form-data",
"sendHeaders": true,
"bodyParameters": {
"parameters": [
{
"name": "url",
"value": "=https://api.telegram.org/file/bot{{ $('Set Credentials (Groq + Telegram)').item.json.Telegram_access_token }}/{{ $('Telegram: Download Audio File').item.json.result.file_path }}"
},
{
"name": "model",
"value": "whisper-large-v3"
}
]
},
"headerParameters": {
"parameters": [
{
"name": "Authorization",
"value": "=Bearer {{ $('Set Credentials (Groq + Telegram)').item.json.Groq_API }}"
},
{
"name": "Content-Type",
"value": "multipart/form-data"
}
]
}
},
"typeVersion": 4.2
},
{
"id": "af9c037a-6b23-4570-b71b-3f1cb24b31fd",
"name": "Set Credentials (Groq + Telegram)",
"type": "n8n-nodes-base.set",
"position": [
848,
32
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "51f14a4d-3941-40f1-8990-f339f975fbe6",
"name": "Groq_API",
"type": "string",
"value": "YOUR_GROQ_API_KEY"
},
{
"id": "4359c1e6-d3e9-4456-8dca-da0162c54942",
"name": "Telegram_access_token",
"type": "string",
"value": "YOUR_TELEGRAM_BOT_ACCESS_TOKEN"
}
]
}
},
"typeVersion": 3.4
},
{
"id": "c8c763af-dd67-448c-8d2c-cb6add5a1419",
"name": "Telegram: 出力オプションを送信",
"type": "n8n-nodes-base.telegram",
"position": [
1488,
32
],
"webhookId": "d26b66fd-68ef-48a8-889c-4961108c02a7",
"parameters": {
"chatId": "={{ $('Telegram: Receive Message').item.json.message.chat.id }}",
"message": "=Which format do you want? 👇",
"options": {
"appendAttribution": false
},
"operation": "sendAndWait",
"approvalOptions": {
"values": {
"approvalType": "double",
"approveLabel": "Text message",
"disapproveLabel": "Text file"
}
}
},
"credentials": {
"telegramApi": {
"id": "s9JmQ5AGImJ32oBQ",
"name": "abhiman1bot - Telegram"
}
},
"typeVersion": 1.2
},
{
"id": "77cda3ba-1c15-4c59-88a5-6f29bece5df9",
"name": "If: 出力タイプが選択された場合",
"type": "n8n-nodes-base.if",
"position": [
1696,
32
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "9d302e0c-44e2-4b9e-a3ed-8d21e67945ed",
"operator": {
"type": "boolean",
"operation": "true",
"singleValue": true
},
"leftValue": "={{ $json.data.approved }}",
"rightValue": ""
}
]
}
},
"typeVersion": 2.2
},
{
"id": "9346c0a9-6f5e-4f01-b156-ef0945b85bed",
"name": "Telegram: 文字起こしテキストを送信",
"type": "n8n-nodes-base.telegram",
"position": [
2048,
-240
],
"webhookId": "c27aae61-d82e-4bd5-ba6e-89d4fad05dc6",
"parameters": {
"text": "={{ $('HTTP - Transcribe Audio (Groq)').item.json.text }}",
"chatId": "={{ $('Telegram: Receive Message').item.json.message.from.id }}",
"additionalFields": {
"appendAttribution": false
}
},
"credentials": {
"telegramApi": {
"id": "s9JmQ5AGImJ32oBQ",
"name": "abhiman1bot - Telegram"
}
},
"typeVersion": 1.2
},
{
"id": "95e83cb8-1db4-46c7-ab23-288bba951bf4",
"name": "Set: 文字起こしされた音声テキスト",
"type": "n8n-nodes-base.set",
"position": [
2224,
256
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "20342409-f694-48b6-a09d-3607fed653ed",
"name": "text",
"type": "string",
"value": "={{ $('HTTP - Transcribe Audio (Groq)').item.json.text }}"
}
]
}
},
"typeVersion": 3.4
},
{
"id": "e74b6a79-5e27-4f36-962d-cda423db241e",
"name": "Convert to TXT File",
"type": "n8n-nodes-base.convertToFile",
"position": [
2432,
256
],
"parameters": {
"options": {
"fileName": "transcription.txt"
},
"operation": "toText",
"sourceProperty": "text",
"binaryPropertyName": "=transcription"
},
"typeVersion": 1.1
},
{
"id": "cfa6abb9-e7ec-4c13-beec-18bf88f9977f",
"name": "Send Transcript File",
"type": "n8n-nodes-base.telegram",
"position": [
2640,
256
],
"webhookId": "3eeca011-cdd1-457b-ba1d-8806dfa0e5d2",
"parameters": {
"chatId": "={{ $('Telegram: Receive Message').item.json.message.from.id }}",
"operation": "sendDocument",
"binaryData": true,
"additionalFields": {},
"binaryPropertyName": "transcription"
},
"credentials": {
"telegramApi": {
"id": "s9JmQ5AGImJ32oBQ",
"name": "abhiman1bot - Telegram"
}
},
"typeVersion": 1.2
},
{
"id": "a65deb4c-a125-4ca2-9966-bf9c4f8fcb73",
"name": "付箋",
"type": "n8n-nodes-base.stickyNote",
"position": [
-992,
-192
],
"parameters": {
"color": 5,
"width": 352,
"height": 432,
"content": "# Telegram Trigger\n\n- Triggers workflow when a message is received in your Telegram bot.\n- Setup:\n 1. Create a bot via BotFather.\n 2. Add bot token in this node.\n 3. Choose event type (Message or Command)."
},
"typeVersion": 1
},
{
"id": "f3f96946-1b21-4e3e-a973-84aba1c22f8f",
"name": "付箋1",
"type": "n8n-nodes-base.stickyNote",
"position": [
-560,
-288
],
"parameters": {
"color": 5,
"width": 752,
"height": 816,
"content": "# Audio/Voice Switch\n\n- Checks if the incoming Telegram message is an audio file or a voice message. \n- If valid, sets the file ID for further processing. \n- If the message is not audio/voice:\n - Sends a \"Wrong file type. Please send an audio or voice message.\" notification back to the user via Telegram. \n - Stops the workflow immediately to prevent further execution. \n- Routes messages based on type for downstream nodes."
},
"typeVersion": 1
},
{
"id": "1433aed5-6a96-47b3-84a1-88c76c743f34",
"name": "付箋2",
"type": "n8n-nodes-base.stickyNote",
"position": [
272,
-176
],
"parameters": {
"color": 5,
"width": 352,
"height": 416,
"content": "# Telegram Download\n\n- Downloads the audio/voice file from Telegram using the file ID. \n- Outputs the **file path** for use in downstream nodes."
},
"typeVersion": 1
},
{
"id": "1911d9ab-b858-4dd3-a40e-9cc9bc3e4ee1",
"name": "付箋3",
"type": "n8n-nodes-base.stickyNote",
"position": [
704,
-512
],
"parameters": {
"color": 5,
"width": 608,
"height": 736,
"content": "# Set & HTTP Nodes for Transcription\n\n- **Purpose:** Prepares credentials and transcribes audio using OpenAI Whisper via Groq API. \n\n### Set Node\n- Contains fields for your credentials: \n - `Groq_API` → Enter your **Groq API key** (can be created for free at [Groq Console](https://console.groq.com/keys)). \n - `Telegram_access_token` → Enter your **Telegram bot token**. \n- Both fields are **mandatory** for this automation to work. \n- Ensures downstream nodes have the necessary authentication to access Telegram and Groq API.\n\n### HTTP Node\n- Sends the audio file to the **Groq API** for transcription using the OpenAI Whisper model. \n- Uses credentials set in the Set node (`Groq_API`) for authorization. \n- Outputs the transcribed text for further processing in the workflow. \n\n> ⚠️ **Important:** Without entering the Telegram access token and the Groq API key in the Set node, the workflow will **not function**."
},
"typeVersion": 1
},
{
"id": "1dc3c2c2-fdff-4454-9b9c-eedfcda542bf",
"name": "付箋4",
"type": "n8n-nodes-base.stickyNote",
"position": [
1408,
-256
],
"parameters": {
"color": 5,
"width": 448,
"height": 496,
"content": "# Telegram Reply Option & Switch\n\n- Lets user choose how to receive the transcription: \n - As a **Telegram message** \n - As a **.txt file** \n- Switch node routes workflow into two branches based on the selected option."
},
"typeVersion": 1
},
{
"id": "26477433-02a0-4651-98b6-c1f96a522889",
"name": "付箋5",
"type": "n8n-nodes-base.stickyNote",
"position": [
1952,
-480
],
"parameters": {
"color": 5,
"width": 320,
"height": 448,
"content": "# Telegram Send Message\n\n- Sends the transcribed text directly to the user as a Telegram message. \n- Triggered when the user chooses the **message** option in the previous switch node."
},
"typeVersion": 1
},
{
"id": "2e97dee2-0493-4be7-af26-aacf5dd50418",
"name": "付箋6",
"type": "n8n-nodes-base.stickyNote",
"position": [
2128,
16
],
"parameters": {
"color": 5,
"width": 736,
"height": 448,
"content": "# Set, Convert & Send Transcript as File\n\n- **Set Node:** Stores the transcribed text in a field. \n- **Convert to File Node:** Converts the text field into a `.txt` file. \n- **Telegram Send Document Node:** Sends the `.txt` file to the user. \n- Triggered when the user chooses the **.txt file** option in the switch node."
},
"typeVersion": 1
},
{
"id": "897b05e5-b03c-43e7-a4d5-4a8fe3418517",
"name": "付箋7",
"type": "n8n-nodes-base.stickyNote",
"position": [
-1776,
-320
],
"parameters": {
"color": 3,
"width": 704,
"height": 736,
"content": "# Description\nTranscribe Telegram voice/audio to text using Groq's OpenAI-compatible Whisper endpoint, then return the transcript either as a Telegram message or as a `.txt` file.\n\n## How it works (brief)\n1. **Telegram Trigger** — receives incoming message. \n2. **Switch (Audio/Voice)** — if `voice` or `audio` → set `file_id`; else send \"Wrong file type\" and stop. \n3. **Telegram Download** — download audio using `file_id`, output **file path/binary**. \n4. **Set Node (credentials)** — **must** set `Groq_API` and `Telegram_access_token` fields for the workflow to work. \n5. **HTTP Node → Groq (Whisper)** — POST audio (multipart) to Groq’s transcription endpoint; get text. \n6. **Reply Switch** — choose **message** or **.txt file**. \n - **Message branch:** Telegram Send Message → sends transcript text. \n - **File branch:** Set transcript → Convert to `.txt` → Telegram Send Document → sends file.\n\n## Requirements\n- n8n instance with internet access \n- Telegram bot token (BotFather) \n- Groq API key (https://console.groq.com/keys) \n\n## Notes / Security\n- Enter `Groq_API` and `Telegram_access_token` in the **Set** node (or n8n Credentials). \n- Do **not** hardcode keys in public nodes. \n- Workflow stops after sending \"Wrong file type\" when incoming message is not audio/voice."
},
"typeVersion": 1
}
],
"active": false,
"pinData": {},
"settings": {
"executionOrder": "v1"
},
"versionId": "8f44217a-1e75-4f99-b539-164737cf6451",
"connections": {
"e74b6a79-5e27-4f36-962d-cda423db241e": {
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[
{
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[
{
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"type": "main",
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},
"1f20c4c9-fea0-4bc0-b424-1bb04813f40d": {
"main": [
[
{
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"type": "main",
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}
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}
}よくある質問
このワークフローの使い方は？
上記のJSON設定コードをコピーし、n8nインスタンスで新しいワークフローを作成して「JSONからインポート」を選択、設定を貼り付けて認証情報を必要に応じて変更してください。
このワークフローはどんな場面に適していますか？
上級 - 文書抽出, マルチモーダルAI
有料ですか？
このワークフローは完全無料です。ただし、ワークフローで使用するサードパーティサービス（OpenAI APIなど）は別途料金が発生する場合があります。
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ワークフロー情報
難易度
上級
ノード数22
カテゴリー2
ノードタイプ8
作成者
Abhiman
@abhimangsAutomation consultant helping creators and small teams streamline their workflows using Notion and n8n. I build systems that save time, boost productivity, and keep everything running smoothly. Check my LinkedIn to connect or collaborate on custom automations.
外部リンク
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