curl -X POST https://agent.asgcompute.com/mcp \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "tools/call",
    "params": {
      "name": "inference_chat",
      "arguments": {
        "model": "openai/gpt-4o-mini",
        "messages": [
          {"role": "user", "content": "Explain quantum computing in one sentence."}
        ]
      }
    }
  }'

const response = await fetch('https://agent.asgcompute.com/mcp', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'Authorization': 'Bearer YOUR_API_KEY',
    'X-Payment': paymentProof  // base64url-encoded payment proof
  },
  body: JSON.stringify({
    jsonrpc: '2.0',
    id: 1,
    method: 'tools/call',
    params: {
      name: 'inference_chat',
      arguments: {
        model: 'openai/gpt-4o-mini',
        messages: [
          { role: 'user', content: 'Explain quantum computing in one sentence.' }
        ]
      }
    }
  })
});