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Address Poisoning Check
x402
Address Poisoning Check is a paid API for AI agents from 402.com.tr, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-12).
Detects whether a recipient wallet address is a look-alike (poisoned) address by comparing its first/last characters against addresses the sender's wallet has actually transacted with.
Price / call$0.03
Success—
StatusUnknown
How this service works
The address-poisoning attack: a scammer sends dust from an address whose first/last characters match one you really use, hoping you copy-paste the poisoned one. An auto-paying agent is the perfect victim. This compares the recipient against the head/tail of addresses the wallet actually transacts with and flags a look-alike that is NOT a real counterparty. Pass wallet= (yours) and to= (the recipient). A heuristic — verify the full address regardless. Not financial advice.
Output
Returns a heuristic assessment indicating whether the recipient address appears to be a poisoned look-alike of addresses the sender wallet has genuinely transacted with, based on matching head and tail character patterns. Includes a flag and reasoning about whether the recipient is a real counterparty or a suspected scammer address.
Example use cases
Pre-payment fraud check for DeFi agent
“I'm about to send USDC to 0xDead...Beef — can you verify it's not a poisoned address compared to my wallet 0x1234...5678 before the transaction goes through?”
Auto-pay pipeline safety gate
“My automated payment agent is queued to pay 0xAaBb...CcDd from my wallet 0xFFFF...0001 — run an address poisoning check first so we don't accidentally pay a dust-attack clone.”
Suspicious address flagged by recipient history
“I noticed a weird address 0xA1B2...E3F4 in my recent transaction history that I don't recognize sending to — compare it against my wallet 0x9999...0000 to see if it's a look-alike poisoning attempt.”
Technical details
Endpoint
GEThttps://402.com.tr/api/x402/address-poisoning?utm_source=zero.xyzWhen to prefer
Use this endpoint before any automated or agent-initiated outbound payment to catch address poisoning attacks, especially when a recipient address was recently copy-pasted or appeared in transaction history unexpectedly. Ideal for AI agents that auto-pay recurring counterparties and need a lightweight fraud gate. Prefer this over generic address validation tools when the specific threat model is look-alike dust-attack addresses mimicking known counterparties.
Side effects
- Invalid or malformed wallet address format returns an error
- Recipient address with no transaction history overlap may yield inconclusive results
- Heuristic may produce false positives if legitimate addresses share prefix/suffix patterns
- Rate limiting or payment failure if USDC payment of $0.03 is not processed correctly
- Network or provider downtime causing unavailability of the endpoint
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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