{
  "name": "Google RAG Workflow with MCP",
  "nodes": [
    {
      "parameters": {},
      "type": "n8n-nodes-base.manualTrigger",
      "typeVersion": 1,
      "position": [
        -240,
        -256
      ],
      "id": "c24314a5-1775-4c0e-88eb-924b0b971d9d",
      "name": "When clicking ‘Execute workflow’"
    },
    {
      "parameters": {
        "method": "POST",
        "url": "https://generativelanguage.googleapis.com/v1beta/fileSearchStores",
        "authentication": "genericCredentialType",
        "genericAuthType": "httpQueryAuth",
        "sendHeaders": true,
        "headerParameters": {
          "parameters": [
            {
              "name": "Content-Type",
              "value": "application/json"
            }
          ]
        },
        "sendBody": true,
        "bodyParameters": {
          "parameters": [
            {
              "name": "displayName",
              "value": "空间名称"
            }
          ]
        },
        "options": {}
      },
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.3,
      "position": [
        16,
        -256
      ],
      "id": "45b36306-8f89-4693-8eb8-c69f353c8fce",
      "name": "HTTP Request",
      "credentials": {
        "httpQueryAuth": {
          "id": "t6XdGcDAZ8UGFdYP",
          "name": "google studio key"
        }
      }
    },
    {
      "parameters": {
        "formTitle": "上传文件",
        "formDescription": "上传文件",
        "formFields": {
          "values": [
            {
              "fieldLabel": "File",
              "fieldType": "file",
              "multipleFiles": false,
              "requiredField": true
            }
          ]
        },
        "options": {}
      },
      "type": "n8n-nodes-base.formTrigger",
      "typeVersion": 2.3,
      "position": [
        -256,
        16
      ],
      "id": "69bbee8d-0476-4c5a-adbc-ccd24476ac7f",
      "name": "On form submission",
      "webhookId": "27a474a3-92b9-4725-bb7c-1fd5111099cc"
    },
    {
      "parameters": {
        "method": "POST",
        "url": "https://generativelanguage.googleapis.com/upload/v1beta/{空间名称}:uploadToFileSearchStore",
        "authentication": "genericCredentialType",
        "genericAuthType": "httpQueryAuth",
        "sendBody": true,
        "contentType": "binaryData",
        "inputDataFieldName": "File",
        "options": {}
      },
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.3,
      "position": [
        16,
        16
      ],
      "id": "f0d949dc-fbc6-4468-9d5a-9dc3ff3e2536",
      "name": "HTTP Request1",
      "credentials": {
        "httpQueryAuth": {
          "id": "t6XdGcDAZ8UGFdYP",
          "name": "google studio key"
        }
      }
    },
    {
      "parameters": {
        "options": {}
      },
      "type": "@n8n/n8n-nodes-langchain.chatTrigger",
      "typeVersion": 1.4,
      "position": [
        -272,
        272
      ],
      "id": "2ab22b48-871f-40ab-91ca-715e67efcf4a",
      "name": "When chat message received",
      "webhookId": "49ea7558-301a-4f87-a842-7ba3c9b4003e"
    },
    {
      "parameters": {
        "options": {
          "systemMessage": "=你是一个基于知识库(RAG)的智能助手。请严格依据知识库信息回答问题，确保内容真实可靠；回答时需注明信息来源。"
        }
      },
      "type": "@n8n/n8n-nodes-langchain.agent",
      "typeVersion": 3,
      "position": [
        -64,
        272
      ],
      "id": "711ca8f9-a350-4504-9dff-c153404af9f1",
      "name": "AI Agent"
    },
    {
      "parameters": {
        "method": "POST",
        "url": "=https://generativelanguage.googleapis.com/v1beta/models/gemini-2.5-flash:generateContent",
        "authentication": "genericCredentialType",
        "genericAuthType": "httpQueryAuth",
        "sendHeaders": true,
        "headerParameters": {
          "parameters": [
            {
              "name": "Content-Type",
              "value": "application/json"
            }
          ]
        },
        "sendBody": true,
        "specifyBody": "json",
        "jsonBody": "={\n    \"contents\": [{\n        \"parts\": [{\n            \"text\": \"{{ $fromAI('query','Questions asked by users') }}\"\n        }]\n    }],\n    \"tools\": [{\n        \"file_search\": {\n            \"file_search_store_names\": [\"空间名称\"]\n        }\n    }]\n}\n",
        "options": {}
      },
      "type": "n8n-nodes-base.httpRequestTool",
      "typeVersion": 4.3,
      "position": [
        144,
        496
      ],
      "id": "32cd273c-bb50-4179-b541-dc9b958f18dc",
      "name": "HTTP Request2",
      "credentials": {
        "httpQueryAuth": {
          "id": "t6XdGcDAZ8UGFdYP",
          "name": "google studio key"
        }
      }
    },
    {
      "parameters": {
        "options": {}
      },
      "type": "@n8n/n8n-nodes-langchain.lmChatGoogleGemini",
      "typeVersion": 1,
      "position": [
        -144,
        496
      ],
      "id": "047a9757-651f-4998-b643-6a253276f04e",
      "name": "Google Gemini Chat Model",
      "credentials": {
        "googlePalmApi": {
          "id": "8TUk57xMDCMcQ7oJ",
          "name": "Google Gemini(PaLM) Api account"
        }
      }
    },
    {
      "parameters": {
        "content": "## 创建知识库搜索空间",
        "height": 240,
        "width": 720
      },
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -416,
        -336
      ],
      "typeVersion": 1,
      "id": "58867218-d610-4c61-a861-4446ba99705c",
      "name": "Sticky Note"
    },
    {
      "parameters": {
        "content": "## 上传知识库文档",
        "height": 240,
        "width": 720,
        "color": 4
      },
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -416,
        -48
      ],
      "typeVersion": 1,
      "id": "4cc6c65a-e7fe-4f5d-9c1c-c19ced5a08c7",
      "name": "Sticky Note1"
    },
    {
      "parameters": {
        "content": "## 知识库文档检索及问答",
        "height": 448,
        "width": 720,
        "color": 6
      },
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -416,
        224
      ],
      "typeVersion": 1,
      "id": "e1db02cc-f2f0-43ec-86e5-00065e27412c",
      "name": "Sticky Note2"
    },
    {
      "parameters": {
        "content": "## 知识库文档检索及问答\n1. 介绍：https://blog.google/technology/developers/file-search-gemini-api/\n2. 接入文档示例：https://ai.google.dev/gemini-api/docs/file-search?hl=zh-cn#citations\n3. api文档：https://ai.google.dev/api/file-search/file-search-stores?hl=zh-cn#endpoint\n4. 价格及速率限制：https://ai.google.dev/gemini-api/docs/file-search?hl=zh-cn#rate-limits",
        "height": 592,
        "width": 736,
        "color": 7
      },
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -416,
        704
      ],
      "typeVersion": 1,
      "id": "9d574c9c-55ed-477f-9f1d-871e94597f08",
      "name": "Sticky Note3"
    },
    {
      "parameters": {
        "url": "https://generativelanguage.googleapis.com/v1beta/{空间名称}/documents",
        "authentication": "genericCredentialType",
        "genericAuthType": "httpQueryAuth",
        "options": {}
      },
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.3,
      "position": [
        -256,
        1104
      ],
      "id": "4cce411e-482e-4e92-ae4b-a83b3985b30f",
      "name": "查看指定空间文档列表",
      "credentials": {
        "httpQueryAuth": {
          "id": "t6XdGcDAZ8UGFdYP",
          "name": "google studio key"
        }
      }
    },
    {
      "parameters": {
        "url": "https://generativelanguage.googleapis.com/v1beta/fileSearchStores",
        "authentication": "genericCredentialType",
        "genericAuthType": "httpQueryAuth",
        "sendHeaders": true,
        "headerParameters": {
          "parameters": [
            {
              "name": "Content-Type",
              "value": "application/json"
            }
          ]
        },
        "options": {}
      },
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.3,
      "position": [
        -256,
        896
      ],
      "id": "a0112148-dfea-4f7e-9b83-e517e2719d7b",
      "name": "查看知识库（搜索）空间列表",
      "credentials": {
        "httpQueryAuth": {
          "id": "t6XdGcDAZ8UGFdYP",
          "name": "google studio key"
        }
      }
    },
    {
      "parameters": {
        "method": "DELETE",
        "url": "https://generativelanguage.googleapis.com/v1beta/{空间名称}",
        "authentication": "genericCredentialType",
        "genericAuthType": "httpQueryAuth",
        "sendQuery": true,
        "queryParameters": {
          "parameters": [
            {
              "name": "force",
              "value": "true"
            }
          ]
        },
        "sendHeaders": true,
        "headerParameters": {
          "parameters": [
            {
              "name": "Content-Type",
              "value": "application/json"
            }
          ]
        },
        "options": {}
      },
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.3,
      "position": [
        48,
        896
      ],
      "id": "37a92c89-c02b-43ee-bdb2-1d9e2b5839eb",
      "name": "删除知识库（搜索）空间",
      "credentials": {
        "httpQueryAuth": {
          "id": "t6XdGcDAZ8UGFdYP",
          "name": "google studio key"
        }
      }
    },
    {
      "parameters": {
        "method": "DELETE",
        "url": "https://generativelanguage.googleapis.com/v1beta/{name=fileSearchStores/*/documents/*}",
        "authentication": "genericCredentialType",
        "genericAuthType": "httpQueryAuth",
        "sendQuery": true,
        "queryParameters": {
          "parameters": [
            {
              "name": "force",
              "value": "true"
            }
          ]
        },
        "options": {}
      },
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.3,
      "position": [
        48,
        1104
      ],
      "id": "625867dc-1748-4d48-ae6d-1de4089c9d4a",
      "name": "删除搜索空间文档",
      "credentials": {
        "httpQueryAuth": {
          "id": "t6XdGcDAZ8UGFdYP",
          "name": "google studio key"
        }
      }
    }
  ],
  "pinData": {},
  "connections": {
    "When clicking ‘Execute workflow’": {
      "main": [
        [
          {
            "node": "HTTP Request",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "On form submission": {
      "main": [
        [
          {
            "node": "HTTP Request1",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "When chat message received": {
      "main": [
        [
          {
            "node": "AI Agent",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "HTTP Request2": {
      "ai_tool": [
        [
          {
            "node": "AI Agent",
            "type": "ai_tool",
            "index": 0
          }
        ]
      ]
    },
    "Google Gemini Chat Model": {
      "ai_languageModel": [
        [
          {
            "node": "AI Agent",
            "type": "ai_languageModel",
            "index": 0
          }
        ]
      ]
    }
  },
  "active": true,
  "settings": {
    "executionOrder": "v1",
    "callerPolicy": "workflowsFromSameOwner",
    "availableInMCP": true
  },
  "versionId": "9856fdb5-6411-45bc-a324-5c161d381f2f",
  "meta": {
    "templateCredsSetupCompleted": true,
    "instanceId": "667f8e49cea6f05a4f2d4764a2ef083b44c681d7bcf3709cc71f85be90eeca2e"
  },
  "id": "zbiU3AnGQ0OFG5Su",
  "tags": []
}