DOI Citation Lookup
https://api.x402node.dev/citation/doi
api.x402node.devfirst seen 13h ago
Fetch scholarly metadata for any DOI from CrossRef, including title, authors, journal, abstract, citations, and references.
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 201 other resources on api.x402node.dev, so the breakdown below is shown at the server level — per-resource activity can't be isolated on-chain for shared addresses.
Facilitators
Chains
Base53 calls$2.55