Construir un chatbot de preguntas y respuestas para Telegram integrando búsqueda web Linkup, GPT-4.1 y voz Mistral

• •Bot Token de Telegram
• •Pueden requerirse credenciales de autenticación para la API de destino
• •Clave de API de OpenAI

{
  "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": "¿Yo mismo?",
      "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": "Agente de IA",
      "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": "Memoria Simple",
      "type": "@n8n/n8n-nodes-langchain.memoryBufferWindow",
      "position": [
        2272,
        816
      ],
      "parameters": {
        "sessionKey": "={{ $('Telegram Trigger').item.json.message.from.username }}",
        "sessionIdType": "customKey",
        "contextWindowLength": 7
      },
      "typeVersion": 1.3
    },
    {
      "id": "1cad1569-ebc5-4446-8a8d-898cbfcebbbf",
      "name": "Nota Adhesiva5",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        880,
        272
      ],
      "parameters": {
        "color": 2,
        "width": 873,
        "height": 293,
        "content": "# Process Audio"
      },
      "typeVersion": 1
    },
    {
      "id": "21b52da1-5a08-4f7b-9b83-56ec4b12fe07",
      "name": "Obtener Archivo de Audio",
      "type": "n8n-nodes-base.telegram",
      "position": [
        976,
        400
      ],
      "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"
        }
      },
      "typeVersion": 1.2
    },
    {
      "id": "05bf3117-933d-4a17-bee7-ca26b454abc7",
      "name": "Enrutador de Mensajes",
      "type": "n8n-nodes-base.switch",
      "position": [
        688,
        512
      ],
      "parameters": {
        "rules": {
          "values": [
            {
              "outputKey": "audio",
              "conditions": {
                "options": {
                  "version": 2,
                  "leftValue": "",
                  "caseSensitive": true,
                  "typeValidation": "strict"
                },
                "combinator": "and",
                "conditions": [
                  {
                    "id": "b5d9f703-2a1b-4942-906c-7a7d1404a4d7",
                    "operator": {
                      "type": "object",
                      "operation": "exists",
                      "singleValue": true
                    },
                    "leftValue": "={{ $('Telegram Trigger').item.json.message.voice }}",
                    "rightValue": ""
                  }
                ]
              },
              "renameOutput": true
            },
            {
              "outputKey": "text",
              "conditions": {
                "options": {
                  "version": 2,
                  "leftValue": "",
                  "caseSensitive": true,
                  "typeValidation": "strict"
                },
                "combinator": "and",
                "conditions": [
                  {
                    "id": "342f0883-d959-44a2-b80d-379e39c76218",
                    "operator": {
                      "type": "string",
                      "operation": "exists",
                      "singleValue": true
                    },
                    "leftValue": "={{ $('Telegram Trigger').item.json.message.text }}",
                    "rightValue": ""
                  }
                ]
              },
              "renameOutput": true
            }
          ]
        },
        "options": {
          "fallbackOutput": "extra"
        }
      },
      "typeVersion": 3.2
    },
    {
      "id": "a0c3018c-0e5e-4184-9586-422fdb5aa16f",
      "name": "Nota Adhesiva",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        2400,
        768
      ],
      "parameters": {
        "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": "Nota Adhesiva1",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        1904,
        768
      ],
      "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
    },
    {
      "id": "4a1bde4f-df6e-45b5-a91c-613e5673848f",
      "name": "Nota Adhesiva2",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        2192,
        320
      ],
      "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": "Nota Adhesiva6",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        1200,
        288
      ],
      "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": "Nota Adhesiva7",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        384,
        304
      ],
      "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
    },
    {
      "id": "95bd10b8-242f-4947-a763-4fe69c507285",
      "name": "Nota Adhesiva8",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        896,
        592
      ],
      "parameters": {
        "color": 2,
        "width": 873,
        "height": 293,
        "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": "Preparar mensaje desde audio",
      "type": "n8n-nodes-base.set",
      "position": [
        1568,
        400
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "bffc2c1f-990e-4396-b59a-ab82b843e061",
              "name": "preset_user_message",
              "type": "string",
              "value": "={{ $json.choices[0].message.content }}"
            }
          ]
        }
      },
      "typeVersion": 3.4
    },
    {
      "id": "8a59c1a6-4b6c-4356-a083-33f2f8cb7651",
      "name": "Preparar mensaje desde texto",
      "type": "n8n-nodes-base.set",
      "position": [
        1280,
        672
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "b37b48ba-8fef-4e6c-bbca-73e6c2e1e0a8",
              "name": "preset_user_message",
              "type": "string",
              "value": "={{ $('Telegram Trigger').item.json.message.text }}"
            }
          ]
        }
      },
      "typeVersion": 3.4
    },
    {
      "id": "edc01d56-b1de-4e22-b8f8-60540d53434c",
      "name": "Consolidar mensaje de usuario",
      "type": "n8n-nodes-base.set",
      "position": [
        1872,
        560
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "7db97ffc-b1eb-422e-8bb1-90eea55c7aa2",
              "name": "final_user_message",
              "type": "string",
              "value": "={{ $json.preset_user_message }}"
            }
          ]
        }
      },
      "typeVersion": 3.4
    },
    {
      "id": "27a2b573-bbe5-47b6-a7ab-57c41a566d07",
      "name": "Nota Adhesiva3",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        208,
        -400
      ],
      "parameters": {
        "width": 880,
        "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": "Búsqueda web",
      "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": [
        1280,
        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
    }
  ],
  "connections": {
    "f2e6b66d-8c5f-44fc-9bcf-34d48a7d8cd3": {
      "main": [
        [
          {
            "node": "05bf3117-933d-4a17-bee7-ca26b454abc7",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "d4b2699d-bff8-424c-a8e9-3879fbcb2a6a": {
      "main": [
        [
          {
            "node": "469db785-dad8-4f46-ae4e-a73936d5c063",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "0e9b76b5-1d89-49f2-924f-53325a6a8507": {
      "ai_tool": [
        [
          {
            "node": "d4b2699d-bff8-424c-a8e9-3879fbcb2a6a",
            "type": "ai_tool",
            "index": 0
          }
        ]
      ]
    },
    "49ca5d84-ebac-41db-a961-f6c66d75a468": {
      "ai_memory": [
        [
          {
            "node": "d4b2699d-bff8-424c-a8e9-3879fbcb2a6a",
            "type": "ai_memory",
            "index": 0
          }
        ]
      ]
    },
    "21b52da1-5a08-4f7b-9b83-56ec4b12fe07": {
      "main": [
        [
          {
            "node": "853eea91-4385-46bd-aaf7-5f910d6afbd6",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "05bf3117-933d-4a17-bee7-ca26b454abc7": {
      "main": [
        [
          {
            "node": "21b52da1-5a08-4f7b-9b83-56ec4b12fe07",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "8a59c1a6-4b6c-4356-a083-33f2f8cb7651",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "c1fbf4de-ddf2-450d-b09c-d07025d643f5": {
      "main": [
        [
          {
            "node": "f2e6b66d-8c5f-44fc-9bcf-34d48a7d8cd3",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "4f0fbc4e-55af-4b3e-b187-fab5231442ab": {
      "ai_languageModel": [
        [
          {
            "node": "d4b2699d-bff8-424c-a8e9-3879fbcb2a6a",
            "type": "ai_languageModel",
            "index": 0
          }
        ]
      ]
    },
    "853eea91-4385-46bd-aaf7-5f910d6afbd6": {
      "main": [
        [
          {
            "node": "48d77137-bc1a-4ae2-8b03-48ddcd17c4cf",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "edc01d56-b1de-4e22-b8f8-60540d53434c": {
      "main": [
        [
          {
            "node": "d4b2699d-bff8-424c-a8e9-3879fbcb2a6a",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "8a59c1a6-4b6c-4356-a083-33f2f8cb7651": {
      "main": [
        [
          {
            "node": "edc01d56-b1de-4e22-b8f8-60540d53434c",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "48d77137-bc1a-4ae2-8b03-48ddcd17c4cf": {
      "main": [
        [
          {
            "node": "edc01d56-b1de-4e22-b8f8-60540d53434c",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  }
}