Contract bytecode check

agent402.tools · x402

Is this address a contract, and what code does it hold? Returns isContract, deployed bytecode size, and the keccak-256 hash of the bytecode (stable fingerprint for comparing deployments) on Ethereum, Base, Polygon, Arbitrum, or Optimism. Keyless multi-endpoint failover.

Name and description as published by x402 Bazaar

Live

Last successful check: 25 Oct 2026, 22:02 UTC.

answered, last 24 hours: 100%
answered, last 30 days: 100%

How addrbook checks →

Connect

https://agent402.tools/api/contract-code

x402: an unpaid request gets a 402 with the price and pay-to wallet. addrbook never pays.

Who's behind it

Listed by: x402 Bazaarlast seen 25 Oct, 19:51 UTC
Wallets named: 0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0named by x402 Bazaar
Listed since: 25 Oct 2026, 17:52 UTC

Checks by endpoint

Host	Protocol	State	Last checked (UTC)	Last answered (UTC)	24 hours	30 days	Tools
agent402.tools	x402	Live	25 Oct, 22:02	25 Oct, 22:02	100%	100%	—

Also listed as

Other entries that share an endpoint with this one.

agent402.tools