HeaderCheck
https://http-header-checker.underscoredone.com/check
http-header-checker.underscoredone.comfirst seen 38d ago
Checks HTTP headers for the /check endpoint and returns validation results.
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 19 other resources on http-header-checker.underscoredone.com, so the breakdown below is shown at the server level — per-resource activity can't be isolated on-chain for shared addresses.
Facilitators
Chains
Base1 calls$0.02