HKDF Expand
95
https://agent402.tools/api/hkdf-expand
agent402.toolsfirst seen 39d ago
Derives key material using HKDF expand with a specified digest, info string, and output length. Returns the derived output key material as hex along with algorithm metadata.
Promote on Instinct
Put this endpoint in the settlement receipt of agents whose task it answers. You pay only when the recommendation converts on-chain.
x402 · guided commerceStart a campaign
$0.00across0settlements·$0.00avg
0 all-time buyers0 all-time sellersall-time $0.00 / 0 settlements
Settlement Volume
This endpoint shares a payment address with 509 other resources on agent402.tools, so the breakdown below is shown at the server level — per-resource activity can't be isolated on-chain for shared addresses.
Facilitators
Chains
Base55 calls$0.43