Address poisoning planted lookalike addresses (same first and last characters, different middle) in wallet histories and took over $76M in the 12 months to July 2026. Paste the address you are about to pay and the addresses you trust. Runs on our server against nothing but what you paste; we never ask for keys.
GET /v1/check?from=<sending wallet>&to=<recipient> scans the sender's real public history (Ethereum, Base, optional Avalanche) and returns ok | caution | danger, the address you probably meant, and evidence tx hashes of zero-value, dust and fake-token poisoning transfers. Paid with x402 (v1 X-PAYMENT or v2 PAYMENT-SIGNATURE), USDC on Base, settled only after the report is produced. OpenAPI · MCP · llms.txt · Terms · Source
Related: EIP-7702 Sweeper Check · Crypto Link Check · Token Check. Made by DevX.