DexterDexter

DexterDexter Proxy

Route any x402 API through Dexter with built-in payment facilitation and response validation.

Dexter Proxy

Dexter Proxy is a universal routing layer that lets you access any x402-enabled API through Dexter infrastructure.

Just prepend x402.dexter.cash/r/ to any x402 URL and go.

Base URL: https://x402.dexter.cash/r/

How It Works

When you route a request through Dexter Proxy:

  1. The request reaches the endpoint – we forward it transparently
  2. If payment is required – we inject Dexter as the facilitator
  3. You pay through Dexter – standard x402 flow, sub-400ms settlement
  4. You get your data – plus validation and quality guarantees

It works with any x402 endpoint, regardless of who built it or which facilitator they originally specified.

Usage

Before Dexter Proxy

https://api.example.com/premium-data

With Dexter Proxy

https://x402.dexter.cash/r/api.example.com/premium-data

That's it. The endpoint doesn't need to know about Dexter. The buyer doesn't need special setup. Just change the URL prefix.

Example Request

# Health check
curl https://x402.dexter.cash/r/health
 
# Access any x402 endpoint
curl -X POST https://x402.dexter.cash/r/your-api.com/endpoint \
  -H "Content-Type: application/json" \
  -d '{"your": "payload"}'

Benefits

For Buyers

  • Access any x402 API through one consistent interface
  • Pay with USDC on Solana or Base – Dexter sponsors gas fees
  • Response validation – quality scoring on every response
  • Automatic discovery – endpoints routed through Proxy get cataloged in the Marketplace

For the Ecosystem

  • Standardization – one payment rail for all x402 traffic
  • Telemetry – comprehensive logging of what's working (and what's not)
  • Quality layer – responses validated for reliability
  • Future refunds – bad responses can trigger automatic buyer protection

Technical Capabilities

FeatureStatus
x402 v1 (X-PAYMENT header)✅ Supported
x402 v2 (PAYMENT-SIGNATURE header)✅ Supported
Solana settlement✅ Supported
Base (EVM) settlement✅ Supported
Response validation✅ Automatic
Telemetry logging✅ Every request
Marketplace auto-discovery✅ Enabled
Self-pay mode✅ Any wallet
Managed wallet mode✅ Dexter wallets

Response Validation

Requests routed through Dexter Proxy benefit from response validation powered by zauthx402. This ensures that when you pay for an API call, you get what you paid for.

Support

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