OneSource Contract Checker
32
https://api.onesource.io/api/chain/contract/:address
api.onesource.iofirst seen 61d ago
Checks whether a blockchain address is a contract and classifies it as ERC-20, ERC-721, ERC-1155, or ERC-165 on a specified chain.
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 56 other resources on api.onesource.io, so the breakdown below is shown at the server level — per-resource activity can't be isolated on-chain for shared addresses.
Facilitators
Chains
Base415 calls$1.80