Dust SDK for JavaScript

A simple and easy to use client for the Dust API

Source code available here.

Installation

npm install @dust-tt/client

Usage

Use Dust's Dust Development Platform to start learning about Dust API.

Import and initialize a client using an workspace api key or an OAuth access token (for now, requires talking to us).

Note: we use the Result pattern to handle errors (see more).

Setup

import { DustAPI } from "@dust-tt/client";

const dustAPI = new DustAPI(
  {
    url: "https://dust.tt",
  },
  {
    workspaceId: "YOUR_WORKSPACE_ID",
    apiKey: "YOUR_API_KEY_OR_ACCESS_TOKEN",
  },
  console
);

Get all assistants (aka "agents")

const r = await dustApi.getAgentConfigurations();

if (r.isErr()) {
  throw new Error(`API Error: ${r.error.message}`);
} else {
  const agents = r.value.filter((agent) => agent.status === "active");
}

Create a conversation

const context = {
  timezone: "UTC",
  username: user.firstName,
  email: user.email,
  fullName: user.fullName,
  profilePictureUrl: user.image,
  origin: "api", // Contact us to add more
};

const question = "Hello! What can you do for me ?";

const r = await dustApi.createConversation({
  title: null,
  visibility: "unlisted",
  message: {
    content: question,
    mentions: [
      {
        configurationId: agent.sId,
      },
    ],
    context,
  },
});

if (r.isErr()) {
  throw new Error(r.error.message);
} else {
  const { conversation, message } = r.value;

  try {
    const r = await dustApi.streamAgentAnswerEvents({
      conversation,
      userMessageId: message.sId,
      signal,
    });
    if (r.isErr()) {
      throw new Error(r.error.message);
    } else {
      const { eventStream } = r.value;

      let answer = "";
      let action: AgentActionPublicType | undefined = undefined;
      let chainOfThought = "";

      for await (const event of eventStream) {
        if (!event) {
          continue;
        }
        switch (event.type) {
          case "user_message_error": {
            console.error(
              `User message error: code: ${event.error.code} message: ${event.error.message}`
            );
            return;
          }
          case "agent_error": {
            console.error(
              `Agent message error: code: ${event.error.code} message: ${event.error.message}`
            );
            return;
          }
          case "agent_action_success": {
            action = event.action;
            break;
          }

          case "generation_tokens": {
            if (event.classification === "tokens") {
              answer = (answer + event.text).trim();
            } else if (event.classification === "chain_of_thought") {
              chainOfThought += event.text;
            }
            break;
          }
          case "agent_message_success": {
            answer = event.message.content ?? "";
            break;
          }
          default:
          // Nothing to do on unsupported events
        }
      }
    }
  } catch (error) {
    if (error instanceof Error && error.message.includes("AbortError")) {
      // Stream aborted
    } else {
      // Other error
    }
  }
}