Examples

Example 1: Weather API

Original API:

https://api.weather.com/current?city=SF

Monetized with Gate402:

https://weather.gate402.io/current?city=SF

Setup

curl -X POST https://api.gate402.io/gateways/quick-create \
  -H "Authorization: Bearer $TOKEN" \
  -d '{
    "originUrl": "https://api.weather.com",
    "pricePerRequest": 0.001,
    "evmAddress": "0xYourWallet"
  }'

Consumer usage

const client = withPaymentInterceptor(axios.create(), { wallet });
const weather = await client.get('https://weather.gate402.io/current?city=SF');
// ✅ Pays $0.001, gets weather data

---

Example 2: AI Model API

Original API:

POST https://api.myai.com/generate
Body: { "prompt": "Hello" }

Monetized:

POST https://myai.gate402.io/generate

Setup

{
  "originUrl": "https://api.myai.com",
  "pricePerRequest": 0.01, // $0.01 per generation
  "evmAddress": "0xYourWallet"
}

Consumer

const response = await client.post('https://myai.gate402.io/generate', {
  prompt: 'Write a poem',
});
// ✅ Pays $0.01, gets AI response

---

Example 3: MCP Server

Original MCP Server:

http://localhost:3000/mcp

Monetized:

https://mcp-tools.gate402.io/mcp

Setup

{
  "originUrl": "http://localhost:3000",
  "pricePerRequest": 0.005,
  "evmAddress": "0xYourWallet"
}

Consumer (Claude Desktop)

{
  "mcpServers": {
    "paid-tools": {
      "url": "https://mcp-tools.gate402.io/mcp",
      "x402": {
        "wallet": "0xConsumerWallet",
        "facilitator": "https://x402.org/facilitator"
      }
    }
  }
}