api.onesource.io · /:address

https://api.onesource.io/api/chain/contract/:address

Contract introspection via eth_call - name, symbol, decimals, and ERC20/721/1155 interface support

BaseCDP BazaarVerified

Price · per callUSDC

$0.0050

Calls · 30d

454

Volume · 30dUSDC

$2.27

Unique payers · 30d

448

Calls per payerverified

Healthnot probed (top 100 only)

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Identity

What this profile is sourced from

Server id: api-onesource-io-api-chain-contract-address
Endpoint: https://api.onesource.io/api/chain/contract/:address
Primary chain: Base
Listed by: CDP Bazaar
Last call observed: 2h ago
Available via API: /api/v1/servers/api-onesource-io-api-chain-contract-address

Sample 402 exchange

Raw HTTP — what an agent observes

GET https://api.onesource.io/api/chain/contract/:address

→ HTTP/1.1 402 Payment Required
  X-Payment-Required: $0.0050
  X-Payment-Currency: USDC
  X-Payment-Chain: base

GET https://api.onesource.io/api/chain/contract/:address
  X-Payment: <signed-receipt>

→ HTTP/1.1 200 OK
  Content-Type: application/json
  …response body…

Caveats

Things to know before drawing strong conclusions

· Calls and volume are 30-day cumulative figures from the source facilitator. Daily breakdowns are not yet available — see /methodology.
· Volume = price × calls. If the server publishes multiple price tiers, only the first accepts[] entry is used.
· "Last call" is what the source last reported, refreshed every 60 seconds.

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