Rocket-ai NPM | npm.io

RocketAI

Simple AI client to interface with different LLMs in a unified way.

Installation

npm install rocket-ai

# or
yarn add rocket-ai

API Keys

You need to set the api keys as environment variables. Those environment variables need to be present, even if they are just an empty string:

OPENAI_API_KEY=
ANTHROPIC_API_KEY=
GOOGLE_API_KEY=
FIREWORKS_API_KEY=

Usage

Client

import {AiClient} from 'rocket-ai';

const aiClient = new AiClient();

// invoke
const response = await aiClient.invoke({
    model: 'gpt-4o',
    message: [{role: "user", content: "tell me a joke"}],
    systemPrompt: 'You are a helpful assistant.',
});

// stream
const stream = await aiClient.stream({
    model: 'gpt-4o',
    message: [{role: "user", content: "tell me a joke"}],
    systemPrompt: 'You are a helpful assistant.',
});

for await (const chunk of stream) {
    console.log(response);
}

// generate image
const image = await aiClient.generateImage({
    model: 'dall-e3',
    prompt: 'a painting of a flower vase',
    size: '1024x1024',
    n: 1
})

// generate speech
const speech = await aiClient.generateSpeech({
    model: 'tts-1',
    text: 'Hello, how are you doing today?',
    voice: 'alloy',
})

// structured output, works for stream an invoke
import {z} from 'zod';

const schema = z.object({
    joke: z.string(),
})

const structuredOutput = aiClient
    .withStructuredOutput(schema)
    .invoke({
        model: 'gpt-4o',
        message: [{role: "user", content: "tell me a joke"}],
        systemPrompt: 'You are a helpful assistant.',
    });

Agent

To use the agent, you need to have at least one tool. Create a sample tool that fetches weather data:

//Weather API Tool
import {z} from "zod";
import {tool} from "rocket-ai"

export const weatherApi = tool(
    async ({city, country}: { city: string, country?: string }): Promise<any> => {

        if (!city) {
            throw new Error('City is required');
        }

        const key = "xxxxxx";

        const response = await fetch(`https://api.openweathermap.org/data/2.5/weather?q=${city},${country}&appid=${key}`)

        const res = await response.json()

        return JSON.stringify(res, null, 2)
    },
    {
        name: "weatherApi",
        description: "Get weather data for a city.",
        queryFormat: z.object({
            city: z.string(),
            country: z.string(),
        }),
    }
)

Now you can use the agent to interact with the tool:

import {Agent} from ".rocket-ai";
import {weatherApi} from "./weather-api";

(async () => {
    const systemInstruction = "You run in a loop of Thought, Action, PAUSE, Observation.\n" +
        "At the end of the loop you output an Answer\n" +
        "Strictly follow the provided response format.\n" +
        "Use Thought to describe your thoughts about the question you have been asked.\n" +
        "Use Action to run one of the actions available to you\n" +
        "Observation will be the result of running those actions.\n";

    const agent = new Agent(systemInstruction);
    agent.registerTools([weatherApi]);
    const response = await agent.executeTask("how is the weather in berlin??");
    console.log(response);
})();