Protocol contract
One resource, one exact payment boundary.
The paid handler produces a fee decision draft. No success body is returned until the official x402 v2 adapter confirms settlement.
PausedNo payment proof is processed while the kill switch is off.
Published tuple
Wrong resource, amount, asset, network, recipient, timeout, host, method, or query is rejected.
- Route
GET /api/v1/fees/now- Resource
https://bitcoinsapi.com/api/v1/fees/now- Price
0.001 USDC- Amount atomic
1000- Protocol
x402 v2 · exact- Network
Base mainnet · eip155:8453- Asset
0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913- Recipient
0x8454A49215A78040c69525D57D05fb5d9B21F663- Timeout
60 seconds- MIME
application/json- Facilitator
xpay- Compatibility
2026-08-07T18:19:48.679Z
Response order
- Fetch the private, no-store 402 challenge.
- Sign the exact advertised x402 v2 requirement.
- The facilitator verifies; the deterministic handler computes.
- Settlement confirms before any useful response is released.
- The receipt—not the handler—supplies the public transaction hash.