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This cookbook shows how to add Maxim observability and tracing to your Vercel AI SDK applications in just one line of code. You’ll learn how to wrap models, log LLM calls, stream responses, add custom metadata, and integrate with Next.js APIs and client components.

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Prerequisites

Install with: 
npm install @ai-sdk/openai @ai-sdk/anthropic @ai-sdk/google @maximai/maxim-js ai

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1. Set Up Environment Variables

Add the following to your .env: 
MAXIM_API_KEY=your-maxim-api-key
MAXIM_LOG_REPO_ID=your-maxim-log-repo-id
OPENAI_API_KEY=your-openai-api-key
ANTHROPIC_API_KEY=your-anthropic-api-key

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2. Initialize Maxim Logger

import { Maxim } from '@maximai/maxim-js';

async function initializeMaxim() {
    const apiKey = process.env.MAXIM_API_KEY || '';
    if (!apiKey) {
        throw new Error('MAXIM_API_KEY is not defined in the environment variables');
    }

    const maxim = new Maxim({ apiKey });
    if (!process.env.MAXIM_LOG_REPO_ID) {
        throw new Error('MAXIM_LOG_REPO_ID is not defined in the environment variables');
    }
    const logger = await maxim.logger({ id: process.env.MAXIM_LOG_REPO_ID });

    if (!logger) {
        throw new Error('Logger is not available');
    }

    return { maxim, logger };
}

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3. Wrap AI SDK Models with Maxim

import { openai } from '@ai-sdk/openai';
import { wrapMaximAISDKModel } from '@maximai/maxim-js/vercel-ai-sdk';

const model = wrapMaximAISDKModel(openai('gpt-4'), logger);

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4. Make LLM Calls Using Wrapped Models

import { generateText } from 'ai';

const response = await generateText({
    model: model,
    prompt: 'Write a haiku about recursion in programming.',
    temperature: 0.8,
    system: 'You are a helpful assistant.',
});

console.log('Response:', response.text);

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5. Use with All Vercel AI SDK Functions

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Generate Object

import { generateObject } from 'ai';
import { z } from 'zod';

const response = await generateObject({
    model: model,
    prompt: 'Generate a user profile for John Doe',
    schema: z.object({
        name: z.string(),
        age: z.number(),
        email: z.string().email(),
        interests: z.array(z.string()),
    }),
});

console.log(response.object);

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Stream Text

import { streamText } from 'ai';

const { textStream } = await streamText({
    model: model,
    prompt: 'Write a short story about space exploration',
    system: 'You are a creative writer',
});

for await (const textPart of textStream) {
    process.stdout.write(textPart);
}

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6. Add Custom Metadata and Tracing

You can add custom names, tags, and IDs to sessions, traces, spans, and generations. 
import { MaximVercelProviderMetadata } from '@maximai/maxim-js/vercel-ai-sdk';

const response = await generateText({
  model: model,
  prompt: 'Hello, how are you?',
  providerOptions: {
    maxim: {
      traceName: 'custom-trace-name',
      traceTags: {
        type: 'demo',
        priority: 'high',
      },
    } as MaximVercelProviderMetadata,
  },
});

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Available Metadata Fields

  • Entity Naming:
    • sessionName, traceName, spanName, generationName
  • Entity Tagging:
    • sessionTags, traceTags, spanTags, generationTags
  • ID References:
    • sessionId, traceId, spanId

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7. Streaming Support with Metadata

import { streamText } from 'ai';
import { openai } from '@ai-sdk/openai';
import { wrapMaximAISDKModel, MaximVercelProviderMetadata } from '@maximai/maxim-js/vercel-ai-sdk';

const model = wrapMaximAISDKModel(openai('gpt-4'), logger);

const { textStream } = await streamText({
  model: model,
  prompt: 'Write a story about a robot learning to paint.',
  system: 'You are a creative storyteller',
  providerOptions: {
    maxim: {
      traceName: 'Story Generation',
      traceTags: {
        type: 'creative',
        format: 'streaming'
      },
    } as MaximVercelProviderMetadata,
  },
});

for await (const textPart of textStream) {
  process.stdout.write(textPart);
}

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8. Multiple Provider Support

You can wrap and use models from OpenAI, Anthropic, and Google with the same interface. 
import { openai } from '@ai-sdk/openai';
import { anthropic } from '@ai-sdk/anthropic';
import { google } from '@ai-sdk/google';
import { wrapMaximAISDKModel } from '@maximai/maxim-js/vercel-ai-sdk';

const openaiModel = wrapMaximAISDKModel(openai('gpt-4'), logger);
const anthropicModel = wrapMaximAISDKModel(anthropic('claude-3-5-sonnet-20241022'), logger);
const googleModel = wrapMaximAISDKModel(google('gemini-pro'), logger);

const responses = await Promise.all([
    generateText({ model: openaiModel, prompt: 'Hello from OpenAI' }),
    generateText({ model: anthropicModel, prompt: 'Hello from Anthropic' }),
    generateText({ model: googleModel, prompt: 'Hello from Google' }),
]);

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9. Next.js API Route Example

// app/api/chat/route.js
import { streamText } from 'ai';
import { openai } from '@ai-sdk/openai';
import { wrapMaximAISDKModel, MaximVercelProviderMetadata } from '@maximai/maxim-js/vercel-ai-sdk';
import { Maxim } from "@maximai/maxim-js";

const maxim = new Maxim({ apiKey: process.env.MAXIM_API_KEY });
const logger = await maxim.logger({ id: process.env.MAXIM_LOG_REPO_ID });
const model = wrapMaximAISDKModel(openai('gpt-4'), logger);

export async function POST(req) {
  const { messages } = await req.json();

  const result = await streamText({
    model: model,
    messages,
    system: 'You are a helpful assistant',
    providerOptions: {
      maxim: {
        traceName: 'Chat API',
        traceTags: {
          endpoint: '/api/chat',
          type: 'conversation'
        },
      } as MaximVercelProviderMetadata,
    },
  });

  return result.toAIStreamResponse();
}

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10. Client-side Integration Example

// components/Chat.jsx
import { useChat } from 'ai/react';

export default function Chat() {
    const { messages, input, handleInputChange, handleSubmit } = useChat({
        api: '/api/chat',
    });

    return (
        <div>
            {messages.map((m) => (
                <div key={m.id}>
                    <strong>{m.role}:</strong> {m.content}
                </div>
            ))}

            <form onSubmit={handleSubmit}>
                <input value={input} onChange={handleInputChange} placeholder="Say something..." />
                <button type="submit">Send</button>
            </form>
        </div>
    );
}

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11. Visualize in Maxim

All requests, responses, and streaming events are automatically traced and can be viewed in your Maxim dashboard.
For more details, see the Maxim JS SDK documentation and the Vercel AI SDK documentation.
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