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This tutorial will provide a detailed guide on how to use the XperAI platform’s Knowledgebase API to create a knowledgebase, upload files, and process documents.
Reference code: XpertAI SDK Example

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Preparation

Before making API calls, you need to prepare the following credentials and information, which can be configured in an environment variables file (XPERTAI_API_URL and XPERTAI_API_KEY): 
const apiUrl = process.env.XPERTAI_API_URL; // XperAI API base URL
const apiKey = process.env.XPERTAI_API_KEY; // Your API key
const workspaceId = "your_workspace_id_here"; // Workspace ID
const copilotId = "your_copilot_id_here"; // Copilot ID
// const integrationId = 'your_integration_id_here' // Integration ID (required only for external knowledgebase)

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How to Obtain These Credentials

  1. API_URL and API_KEY
    • Log in to the XperAI platform’s Digital Expert or Knowledgebase.
    • Navigate to the “Settings” -> “API Keys” page.
    • Generate or copy your API key.
    • The API base URL is typically https://api.xpertai.cn/api/ai/.
  2. Workspace ID
    • In the XperAI console, access your workspace.
    • The workspace ID can be found in the browser’s address bar.
    • The format is typically a UUID (e.g., 23f2b2ff-9318-43b6-a986-928fcf70d4ea).
  3. Copilot ID
    • In the XperAI settings page, go to the “AI Copilot” section.
    • Select the copilot you want to associate.
    • The ID can be found on the copilot provider icon.
    • The format is typically a UUID (e.g., 9ff28c7c-3e63-4ced-b855-2782d79a21b3).
  4. Knowledgebase System Integration ID (optional, required only for external knowledgebase)
    • If you are using an external knowledgebase integration, find this ID in the integration settings.

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Install Required Dependencies

npm install axios dotenv form-data fs

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API Call Steps

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1. Create a Knowledgebase

First, we need to create a knowledgebase container: 
async function createKnowledgebase() {
  const knowledgebase = {
    workspaceId, // Workspace ID obtained from the console
    name: "Customer service knowledgebase",
    description: "Customer service knowledgebase",
    permission: "organization",
    type: "standard",
    recall: {
      topK: 10,
      score: 0.5,
    },
    copilotModel: {
      copilotId, // Copilot ID obtained from the console
      modelType: "text-embedding",
      model: "text-embedding-v4", // Select the appropriate embedding model
    },
    // integrationId, // Optional: External knowledgebase integration ID
    // extKnowledgebaseId: "string", // Optional: External knowledgebase ID
  };
  
  try {
    const response = await axios.post(
      `${apiUrl}v1/kb`,
      knowledgebase,
      {
        headers: {
          Authorization: `Bearer ${apiKey}`, // Use your API key
        },
      }
    );
    return response.data;
  } catch (error) {
    console.error("Failed to create knowledgebase:", error.response?.data || error.message);
    return null;
  }
}

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2. Upload a File

Upload a local file to the XperAI platform: 
async function uploadFile(filePath) {
  const formData = new FormData();
  formData.append("file", fs.createReadStream(filePath));

  const headers = {
    ...formData.getHeaders(),
    Authorization: `Bearer ${apiKey}`, // Use your API key
  };

  try {
    const response = await axios.post(
      `${apiUrl}v1/file`,
      formData,
      { headers }
    );
    return response.data;
  } catch (error) {
    console.error("File upload failed:", error.response?.data || error.message);
    return null;
  }
}

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3. Create a Document Association

Create a document in the knowledgebase from the uploaded file: 
async function createDocument(knowledgebaseId, storageFileId) {
  const document = {
    knowledgebaseId, // ID of the knowledgebase created in the previous step
    storageFileId, // ID of the file uploaded in the previous step
    sourceType: "file",
  };
  
  try {
    const response = await axios.post(
      `${apiUrl}v1/kb/${knowledgebaseId}/bulk`,
      [document],
      {
        headers: {
          Authorization: `Bearer ${apiKey}`, // Use your API key
        },
      }
    );
    return response.data;
  } catch (error) {
    console.error("Failed to create document:", error.response?.data || error.message);
    return null;
  }
}

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4. Start Embedding Process

Initiate the vectorization process for the document: 
async function startEmbedding(knowledgebaseId, documentId) {
  try {
    const response = await axios.post(
      `${apiUrl}v1/kb/${knowledgebaseId}/process`,
      [documentId], // ID of the document created in the previous step
      {
        headers: {
          Authorization: `Bearer ${apiKey}`, // Use your API key
        },
      }
    );
    return response.data;
  } catch (error) {
    console.error("Failed to process document:", error.response?.data || error.message);
    return null;
  }
}

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5. Check Processing Status

Check the progress of document processing: 
async function checkDocumentStatus(knowledgebaseId, documentId) {
  try {
    const response = await axios.get(
      `${apiUrl}v1/kb/${knowledgebaseId}/status`,
      {
        params: { ids: documentId }, // ID of the document to check
        headers: {
          Authorization: `Bearer ${apiKey}`, // Use your API key
        },
      }
    );
    return response.data;
  } catch (error) {
    console.error("Failed to check status:", error.response?.data || error.message);
    return null;
  }
}

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Complete Usage Example

// Initialize configuration
const apiUrl = process.env.XPERTAI_API_URL;
const apiKey = process.env.XPERTAI_API_KEY;
const workspaceId = "your_workspace_id_here"; // Replace with your actual workspace ID
const copilotId = "your_copilot_id_here"; // Replace with your actual copilot ID

// Main execution function
async function main() {
  // 1. Create knowledgebase
  const knowledgebase = await createKnowledgebase();
  if (!knowledgebase) return;
  const knowledgebaseId = knowledgebase.id;
  console.log("Knowledgebase created successfully, ID:", knowledgebaseId);

  // 2. Upload file
  const storageFile = await uploadFile("./data/file.txt");
  if (!storageFile) return;
  console.log("File uploaded successfully, ID:", storageFile.id);

  // 3. Create document association
  const documents = await createDocument(knowledgebaseId, storageFile.id);
  if (!documents || documents.length === 0) return;
  const document = documents[0];
  console.log("Document created successfully, ID:", document.id);

  // 4. Start processing
  const processedDocs = await startEmbedding(knowledgebaseId, document.id);
  if (!processedDocs || processedDocs.length === 0) return;
  let currentDoc = processedDocs[0];
  
  // 5. Poll for status
  let status = currentDoc.status;
  while (status === "running") {
    process.stdout.write(`\rProcessing progress: ${currentDoc.progress}%`);
    await new Promise(resolve => setTimeout(resolve, 2000));
    
    const statusData = await checkDocumentStatus(knowledgebaseId, document.id);
    if (!statusData || statusData.length === 0) {
      console.error("Failed to retrieve status");
      return;
    }
    
    currentDoc = statusData[0];
    status = currentDoc.status;
  }
  
  console.log(`\nDocument processing completed, final status: ${status}`);
}

// Execute main function
main().catch(console.error);

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Notes

  1. Ensure all ID parameters use the correct values obtained from the XperAI platform.
  2. Safeguard your API key and do not expose it or commit it to version control systems.
  3. File uploads have size limits; refer to the official documentation for specific restrictions.
  4. Document processing time depends on file size and content complexity.
  5. It is recommended to implement appropriate error handling and retry mechanisms for improved reliability.
By following these steps, you can successfully create a knowledgebase, upload documents, and complete the vectorization process, preparing for subsequent intelligent Q&A and retrieval functions.