Dialogflow API: Node.js Client

Dialogflow API client for Node.js

Read more about the client libraries for Cloud APIs, including the older Google APIs Client Libraries, in Client Libraries Explained.

Table of contents:

Quickstart
Samples
Versioning
Contributing
License

Quickstart

Before you begin

Select or create a Cloud Platform project.
Enable billing for your project.
Enable the Dialogflow API API.
Set up authentication with a service account so you can access the API from your local workstation.

Installing the client library

npm install dialogflow

Using the client library


const dialogflow = require('dialogflow');
const uuid = require('uuid');

/**
 * Send a query to the dialogflow agent, and return the query result.
 * @param {string} projectId The project to be used
 */
async function runSample(projectId = 'your-project-id') {
  // A unique identifier for the given session
  const sessionId = uuid.v4();

  // Create a new session
  const sessionClient = new dialogflow.SessionsClient();
  const sessionPath = sessionClient.sessionPath(projectId, sessionId);

  // The text query request.
  const request = {
    session: sessionPath,
    queryInput: {
      text: {
        // The query to send to the dialogflow agent
        text: 'hello',
        // The language used by the client (en-US)
        languageCode: 'en-US',
      },
    },
  };

  // Send request and log result
  const responses = await sessionClient.detectIntent(request);
  console.log('Detected intent');
  const result = responses[0].queryResult;
  console.log(`  Query: ${result.queryText}`);
  console.log(`  Response: ${result.fulfillmentText}`);
  if (result.intent) {
    console.log(`  Intent: ${result.intent.displayName}`);
  } else {
    console.log(`  No intent matched.`);
  }
}

Samples

Samples are in the samples/ directory. The samples' README.md has instructions for running the samples.

Sample	Source Code	Try it
Detect Intent (Text)	source code
Create Knowledge Base	source code
Get Knowledge Base	source code
list Knowledge Base	source code
list Knowledge Base	source code
create Document	source code
list Documents	source code
Get Document	source code
delete Document	source code
detect Intent with sentiment analysis	source code
detect Intent with text-to-speech response	source code
detect Intent with Knowledge Base	source code
Detect Intent (Audio)	source code
Detect Intent (Streaming)	source code
Create Entity	source code
Delete Entity	source code
Create Intent	source code
Delete Intent	source code
Create Context	source code
Delete Context	source code
Create Session Entity Type	source code
Delete Session Entity Type	source code

The Dialogflow API Node.js Client API Reference documentation also contains samples.

Versioning

This library follows Semantic Versioning.

This library is considered to be General Availability (GA). This means it is stable; the code surface will not change in backwards-incompatible ways unless absolutely necessary (e.g. because of critical security issues) or with an extensive deprecation period. Issues and requests against GA libraries are addressed with the highest priority.

More Information: Google Cloud Platform Launch Stages

Contributing

Contributions welcome! See the Contributing Guide.

License

Apache Version 2.0

See LICENSE