构建集成Linkup网络搜索、GPT-4.1和Mistral语音

• •Telegram Bot Token
• •可能需要目标 API 的认证凭证
• •OpenAI API Key

{
  "nodes": [
    {
      "id": "c1fbf4de-ddf2-450d-b09c-d07025d643f5",
      "name": "Telegram Trigger",
      "type": "n8n-nodes-base.telegramTrigger",
      "position": [
        240,
        544
      ],
      "webhookId": "cce06804-3cd5-4dff-a90a-ed4ce49b0b04",
      "parameters": {
        "updates": [
          "message"
        ],
        "additionalFields": {}
      },
      "credentials": {
        "telegramApi": {
          "id": "GQHcQvX9GizW5ai3",
          "name": "Duv Brain Telegram"
        }
      },
      "typeVersion": 1.1
    },
    {
      "id": "f2e6b66d-8c5f-44fc-9bcf-34d48a7d8cd3",
      "name": "Myself?",
      "type": "n8n-nodes-base.if",
      "position": [
        464,
        544
      ],
      "parameters": {
        "options": {},
        "conditions": {
          "options": {
            "version": 2,
            "leftValue": "",
            "caseSensitive": true,
            "typeValidation": "strict"
          },
          "combinator": "and",
          "conditions": [
            {
              "id": "fae16f10-e497-47ea-92ec-741f54cedd62",
              "operator": {
                "name": "filter.operator.equals",
                "type": "string",
                "operation": "equals"
              },
              "leftValue": "={{ $json.message.from.username }}",
              "rightValue": "<Replace with your Telegram username>"
            }
          ]
        }
      },
      "typeVersion": 2.2
    },
    {
      "id": "d4b2699d-bff8-424c-a8e9-3879fbcb2a6a",
      "name": "AI Agent",
      "type": "@n8n/n8n-nodes-langchain.agent",
      "position": [
        2256,
        560
      ],
      "parameters": {
        "text": "={{ $json.final_user_message }}",
        "options": {
          "systemMessage": "=You are a helpful assistant that answers the user based on web-search.\n\nWhenever the user query requires getting insights from the web (most queries except empty queries like \"hi\"), call the tool \"Web search\" with a question to have it output an answer based on AI web search.\n\nProvide sources of the main insights.\n\nAnswer considring that this conversation happens on Telegram - adapt your style/format to that platform."
        },
        "promptType": "define"
      },
      "typeVersion": 1.8
    },
    {
      "id": "49ca5d84-ebac-41db-a961-f6c66d75a468",
      "name": "Simple Memory",
      "type": "@n8n/n8n-nodes-langchain.memoryBufferWindow",
      "position": [
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      ],
      "parameters": {
        "sessionKey": "={{ $('Telegram Trigger').item.json.message.from.username }}",
        "sessionIdType": "customKey",
        "contextWindowLength": 7
      },
      "typeVersion": 1.3
    },
    {
      "id": "1cad1569-ebc5-4446-8a8d-898cbfcebbbf",
      "name": "Sticky Note5",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
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      "parameters": {
        "color": 2,
        "width": 873,
        "height": 293,
        "content": "# Process Audio"
      },
      "typeVersion": 1
    },
    {
      "id": "21b52da1-5a08-4f7b-9b83-56ec4b12fe07",
      "name": "Get Audio File",
      "type": "n8n-nodes-base.telegram",
      "position": [
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      ],
      "webhookId": "aa1f75c8-2c80-4fab-be6c-b4120381181d",
      "parameters": {
        "fileId": "={{ $('Telegram Trigger').item.json.message.voice.file_id }}",
        "resource": "file",
        "additionalFields": {}
      },
      "credentials": {
        "telegramApi": {
          "id": "GQHcQvX9GizW5ai3",
          "name": "Duv Brain Telegram"
        }
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      "typeVersion": 1.2
    },
    {
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      "name": "Message Router",
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      "position": [
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      "parameters": {
        "rules": {
          "values": [
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              "outputKey": "audio",
              "conditions": {
                "options": {
                  "version": 2,
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                  "caseSensitive": true,
                  "typeValidation": "strict"
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                "combinator": "and",
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                    "operator": {
                      "type": "object",
                      "operation": "exists",
                      "singleValue": true
                    },
                    "leftValue": "={{ $('Telegram Trigger').item.json.message.voice }}",
                    "rightValue": ""
                  }
                ]
              },
              "renameOutput": true
            },
            {
              "outputKey": "text",
              "conditions": {
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                "combinator": "and",
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                      "singleValue": true
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                    "leftValue": "={{ $('Telegram Trigger').item.json.message.text }}",
                    "rightValue": ""
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              "renameOutput": true
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        "color": 6,
        "width": 336,
        "height": 368,
        "content": "\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n## Linkup web search\n\nReplace the API key placeholder with your linkup.so API key, or store it as a credential to reuse it easily in other workflows."
      },
      "typeVersion": 1
    },
    {
      "id": "93107652-cd00-4d85-9eb7-2d42276e76a1",
      "name": "Sticky Note1",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
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      ],
      "parameters": {
        "color": 5,
        "width": 336,
        "height": 368,
        "content": "\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n## AI model\n\nThe core AI model of your agent. Connect your OpenAI API key or switch to your favorite LLM provider."
      },
      "typeVersion": 1
    },
    {
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      "name": "Sticky Note2",
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      "position": [
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      "parameters": {
        "color": 4,
        "width": 352,
        "height": 400,
        "content": "## The agent\n\nThis agent will distribute the relevant questions to the Linkup tool via the \"Web search\" tool. Feel free to provide more context in its system message and add instructions when it comes to the format or style of responses?"
      },
      "typeVersion": 1
    },
    {
      "id": "4f0fbc4e-55af-4b3e-b187-fab5231442ab",
      "name": "OpenAI Chat Model",
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "position": [
        2032,
        832
      ],
      "parameters": {
        "model": {
          "__rl": true,
          "mode": "list",
          "value": "gpt-4.1-mini"
        },
        "options": {}
      },
      "credentials": {
        "openAiApi": {
          "id": "dMiSy27YCK6c6rra",
          "name": "Duv's OpenAI"
        }
      },
      "typeVersion": 1.2
    },
    {
      "id": "469db785-dad8-4f46-ae4e-a73936d5c063",
      "name": "Telegram answer",
      "type": "n8n-nodes-base.telegram",
      "position": [
        2832,
        560
      ],
      "webhookId": "7ac3dfe6-5df8-4791-8765-2234d475c22d",
      "parameters": {
        "text": "={{ $json.output }}",
        "chatId": "={{ $('Telegram Trigger').item.json.message.from.id }}",
        "additionalFields": {
          "appendAttribution": false
        }
      },
      "credentials": {
        "telegramApi": {
          "id": "GQHcQvX9GizW5ai3",
          "name": "Duv Brain Telegram"
        }
      },
      "typeVersion": 1.2
    },
    {
      "id": "d8484fa4-6147-49f5-a4cf-549a9b9c609c",
      "name": "Sticky Note6",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        1200,
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      ],
      "parameters": {
        "color": 7,
        "width": 265,
        "height": 261,
        "content": "### AI transcription\n\nYou can replace with another model like OpenAI's."
      },
      "typeVersion": 1
    },
    {
      "id": "b99a6e1e-d26a-405f-a9ad-68a3f9108734",
      "name": "Sticky Note7",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
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      ],
      "parameters": {
        "color": 3,
        "width": 265,
        "height": 405,
        "content": "### Make this bot private\n\nTelegram bots are public by default, so we're adding a filter here based on your unique Telegram username. Change the value to ensure only your messages can go through, or delete this step to make it 100% public"
      },
      "typeVersion": 1
    },
    {
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        "content": "\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n# Process text"
      },
      "typeVersion": 1
    },
    {
      "id": "48d77137-bc1a-4ae2-8b03-48ddcd17c4cf",
      "name": "Prepare message from audio",
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        "assignments": {
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              "id": "bffc2c1f-990e-4396-b59a-ab82b843e061",
              "name": "preset_user_message",
              "type": "string",
              "value": "={{ $json.choices[0].message.content }}"
            }
          ]
        }
      },
      "typeVersion": 3.4
    },
    {
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      "name": "Prepare message from text",
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        "options": {},
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          "assignments": [
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              "name": "preset_user_message",
              "type": "string",
              "value": "={{ $('Telegram Trigger').item.json.message.text }}"
            }
          ]
        }
      },
      "typeVersion": 3.4
    },
    {
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      "name": "Consolidate user message",
      "type": "n8n-nodes-base.set",
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        "assignments": {
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              "type": "string",
              "value": "={{ $json.preset_user_message }}"
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    },
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      "name": "Sticky Note3",
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      "position": [
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      "parameters": {
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        "height": 544,
        "content": "# **AI Web Search Telegram Agent with Linkup & GPT-4.1 (text + voice)**\n\n**Summary:** A Telegram bot that answers questions using **Linkup** AI web search. Accepts text and voice (transcribed via **Mistral** by default) and uses an LLM agent that calls the **Web search** tool.\n\n**How it works (short):**\n1.  **Telegram Trigger** → Detects text or voice via **Message Router**.\n2.  Voice: **Get Audio File** → **Mistral transcribe** → prepare text.\n3.  **AI Agent** calls **Web search** (Linkup) when web knowledge is needed and sends answers via **Telegram answer**.\n\n**How to use / Setup:**\n1.  Create a Linkup account at [linkup.so](https://linkup.so) and get your **API Key**.\n2.  In the **Web search** node, go to the \"Headers\" section and replace the placeholder API key with your actual key in the `Authorization` field.\n3.  Add credentials: **Telegram API**, **OpenAI (or LLM)**, **Mistral Cloud**.\n4.  (Optional) Edit **Myself?** to set your Telegram username for private testing or delete it to make the bot public.\n5.  Activate the workflow and message your bot in Telegram.\n\n**Bold nodes to configure:** **Telegram Trigger**, **Web search**, **OpenAI Chat Model**, **Mistral transcribe**, **Myself?**\n\n*A template created by Guillaume Duvernay*"
      },
      "typeVersion": 1
    },
    {
      "id": "0e9b76b5-1d89-49f2-924f-53325a6a8507",
      "name": "Web search",
      "type": "n8n-nodes-base.httpRequestTool",
      "position": [
        2544,
        832
      ],
      "parameters": {
        "url": "https://api.linkup.so/v1/search",
        "method": "POST",
        "options": {},
        "sendBody": true,
        "sendHeaders": true,
        "bodyParameters": {
          "parameters": [
            {
              "name": "q",
              "value": "={{ /*n8n-auto-generated-fromAI-override*/ $fromAI('parameters0_Value', `The query for AI web-search`, 'string') }}"
            },
            {
              "name": "depth",
              "value": "standard"
            },
            {
              "name": "outputType",
              "value": "sourcedAnswer"
            },
            {
              "name": "includeImages",
              "value": "false"
            },
            {
              "name": "includeInlineCitations",
              "value": "false"
            }
          ]
        },
        "toolDescription": "Call this tool when web-search base is required to answer the user query.",
        "headerParameters": {
          "parameters": [
            {
              "name": "Authorization",
              "value": "Bearer <your Linkup API key>"
            }
          ]
        }
      },
      "typeVersion": 4.2
    },
    {
      "id": "853eea91-4385-46bd-aaf7-5f910d6afbd6",
      "name": "Mistral transcribe",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
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        400
      ],
      "parameters": {
        "url": "https://api.mistral.ai/v1/audio/transcriptions",
        "method": "POST",
        "options": {
          "redirect": {
            "redirect": {}
          }
        },
        "sendBody": true,
        "contentType": "multipart-form-data",
        "authentication": "predefinedCredentialType",
        "bodyParameters": {
          "parameters": [
            {
              "name": "model",
              "value": "voxtral-mini-2507"
            },
            {
              "name": "file",
              "parameterType": "formBinaryData",
              "inputDataFieldName": "data"
            }
          ]
        },
        "nodeCredentialType": "mistralCloudApi"
      },
      "credentials": {
        "mistralCloudApi": {
          "id": "vakRnCmKyOQFpdEk",
          "name": "Mistral Cloud account"
        }
      },
      "typeVersion": 4.2
    }
  ],
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