Payment Standards
x402 payment challenge guide
Sentinel returns an x402 payment challenge for unpaid access where required. Lane prices match pricing.html.
Lane Pricing (Base USDC)
basic
0.02 USDC
executive
0.05 USDC
premium
0.10 USDC
priority
0.15 USDC
Challenge Specifications
The SDK surfaces challenge details for explicit payment handling and does not fake settlement.