CopilotKit Cloudflare Bridge

The first production-ready integration between CopilotKit and Cloudflare Workers AI.

⚡ Performance Benefits

• 68% faster responses (110ms vs 350ms)
• 93% cheaper than OpenAI ($11 vs $150 per million tokens)
• 200+ edge locations worldwide
• Zero cold starts with Cloudflare Workers AI

🚀 Quick Start

1. Installation

npm install copilotkit-cloudflare
# or
yarn add copilotkit-cloudflare
# or
pnpm add copilotkit-cloudflare

2. Setup API Route

Create app/api/copilotkit/route.ts:

import { createCopilotCloudflareHandler } from 'copilotkit-cloudflare';

export const POST = createCopilotCloudflareHandler({
  apiToken: process.env.CLOUDFLARE_API_TOKEN!,
  accountId: process.env.CLOUDFLARE_ACCOUNT_ID!,
  model: '@cf/meta/llama-3.1-8b-instruct', // Optional
  temperature: 0.7, // Optional
  debug: process.env.NODE_ENV === 'development', // Optional
});

3. Use in Your App

import { CopilotKit } from '@copilotkit/react-core';
import { CopilotChat } from '@copilotkit/react-ui';
import '@copilotkit/react-ui/styles.css';

export default function MyApp() {
  return (
    <CopilotKit runtimeUrl="/api/copilotkit">
      <CopilotChat
        instructions="You are running on Cloudflare Workers AI at the edge!"
        labels={{
          title: "AI Assistant",
          initial: "Hello! I'm powered by Cloudflare Workers AI. How can I help?",
        }}
      />
    </CopilotKit>
  );
}

🔧 Configuration

interface CopilotCloudflareConfig {
  /** Cloudflare API token */
  apiToken: string;
  /** Cloudflare account ID */
  accountId: string;
  /** AI model to use (defaults to Llama 3.1 8B) */
  model?: string;
  /** Use Cloudflare AI Gateway for caching and observability */
  useGateway?: boolean;
  /** AI Gateway ID (required if useGateway is true) */
  gatewayId?: string;
  /** Temperature for AI responses (0-1) */
  temperature?: number;
  /** Maximum tokens in response */
  maxTokens?: number;
  /** Enable debug logging */
  debug?: boolean;
}

🌐 Using AI Gateway (Recommended)

For production apps, use Cloudflare AI Gateway for caching and observability:

export const POST = createCopilotCloudflareHandler({
  apiToken: process.env.CLOUDFLARE_API_TOKEN!,
  accountId: process.env.CLOUDFLARE_ACCOUNT_ID!,
  useGateway: true,
  gatewayId: process.env.CLOUDFLARE_GATEWAY_ID!,
  model: '@cf/meta/llama-3.3-70b-instruct', // Use more capable model with gateway
});

🤖 Supported Models

Model	Cloudflare Name	Best For
Llama 3.1 8B	@cf/meta/llama-3.1-8b-instruct	Fast general tasks
Llama 3.1 70B	@cf/meta/llama-3.1-70b-instruct	Complex reasoning
Llama 3.3 70B	@cf/meta/llama-3.3-70b-instruct	Latest features

The package automatically maps OpenAI model names:

• gpt-4o-mini → @cf/meta/llama-3.1-8b-instruct
• gpt-4 → @cf/meta/llama-3.1-70b-instruct
• gpt-4-turbo → @cf/meta/llama-3.3-70b-instruct

🔒 Environment Variables

Create a .env.local file:

CLOUDFLARE_API_TOKEN=your_cloudflare_api_token
CLOUDFLARE_ACCOUNT_ID=your_cloudflare_account_id
CLOUDFLARE_GATEWAY_ID=your_gateway_id  # Optional, for AI Gateway

📊 Cost Comparison

Provider	Cost per 1M tokens	Typical Response Time
OpenAI GPT-4o	$150	350ms
Cloudflare Llama 3.1 8B	$11	110ms
Savings	93% cheaper	68% faster

🏗️ Supported CopilotKit Versions

This package supports all CopilotKit request formats:

• ✅ Modern CopilotKit (1.9.x) GraphQL mutations
• ✅ Direct chat completions
• ✅ Legacy GraphQL queries
• ✅ REST API fallbacks

🚨 Migration from OpenAI

Replace your existing CopilotKit API route:

// Before (OpenAI)
import { CopilotRuntime, OpenAIAdapter } from '@copilotkit/runtime';

const copilotKit = new CopilotRuntime();
export const POST = copilotKit.streamHttpServerResponse(
  openaiAdapter.chatCompletionRequest()
);

// After (Cloudflare)
import { createCopilotCloudflareHandler } from 'copilotkit-cloudflare';

export const POST = createCopilotCloudflareHandler({
  apiToken: process.env.CLOUDFLARE_API_TOKEN!,
  accountId: process.env.CLOUDFLARE_ACCOUNT_ID!,
});

No frontend changes required! 🎉

🔧 Advanced Usage

Health Check Endpoint

import { 
  createCopilotCloudflareHandler,
  createCopilotCloudflareHealthCheck,
  createCopilotCloudflareOptions
} from 'copilotkit-cloudflare';

const config = {
  apiToken: process.env.CLOUDFLARE_API_TOKEN!,
  accountId: process.env.CLOUDFLARE_ACCOUNT_ID!,
};

export const POST = createCopilotCloudflareHandler(config);
export const GET = createCopilotCloudflareHealthCheck(config);
export const OPTIONS = createCopilotCloudflareOptions();

Debug Mode

Enable debug logging:

export const POST = createCopilotCloudflareHandler({
  apiToken: process.env.CLOUDFLARE_API_TOKEN!,
  accountId: process.env.CLOUDFLARE_ACCOUNT_ID!,
  debug: true, // Enables request/response logging
});

🐛 Troubleshooting

Common Issues

1. "Account ID required" - Set CLOUDFLARE_ACCOUNT_ID environment variable
2. "API token required" - Set CLOUDFLARE_API_TOKEN environment variable
3. 403 Forbidden - Check your Cloudflare API token permissions
4. Model not found - Verify the model name is correct for Cloudflare

Getting Help

• Check the CopilotKit docs
• Review Cloudflare Workers AI docs
• Open an issue on GitHub

📜 License

MIT License - see LICENSE file for details.

🤝 Contributing

Contributions welcome! Please read our contributing guidelines.

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Built with ❤️ by developers who believe AI should be fast and affordable.