Trust nothing.
Verify everything.

Check any token contract, wallet or URL for threats before you connect your wallet. Deterministic engine - GoPlus Labs data plus on-chain checks - results in seconds.

Web3defender is a free security scanner for Web3. Paste any address, token contract, URL or TON wallet and get a verdict - Safe, Caution or Danger. The engine never fabricates results: when it cannot score something it tells you why instead - no data yet, contract not found, network not covered, or the data service is down.

How does it work?

01

Paste anything

Drop a contract address, wallet, URL or TON address. The engine detects the type automatically. An EVM address does not carry its chain, so the universal box checks Ethereum - for a token on BSC, Polygon, Arbitrum or Base, pick the chain in the Token scanner.

02

Deterministic check

GoPlus Labs security data plus on-chain queries. No AI in the scan path - every verdict is reproducible and auditable.

03

Honest verdict

Safe, Caution or Danger, with the specific findings listed. When there is no verdict to give, you see the reason - not found, no data, network not covered, or service unavailable - never a false Safe.

What does Web3defender check?

Token contracts

Honeypot detection, buy/sell tax, mint and owner risks, liquidity locks, blacklist traps. Covers Ethereum, BSC, Polygon, Arbitrum, Base and Solana.

Wallets

Active unlimited approvals that could drain your funds, suspicious activity patterns, and a fixed built-in list of 23 mixer addresses (Tornado Cash and related) - a list compiled in advance, not a live sanctions feed. EVM wallets only.

URLs and domains

Phishing database lookup, suspicious TLD patterns, crypto-keyword bait domains, punycode homograph attacks. Paste the full link.

TON network

Wallets only - there is no jetton contract scan. Tonkeeper scam flags on the address and on recent senders, plus the verification status Tonkeeper gives each jetton the wallet holds. Supports UQ and EQ address formats.

Networks covered

Coverage is not the same on every network.

Token contracts
Ethereum BSC Polygon Arbitrum Base Solana
Wallets and approvals
Ethereum BSC Polygon Arbitrum Base
Wallet checks only
TON

Free to start.

Paid plans with high daily limits and wallet monitoring are available inside the app. Pay with TON or Telegram Stars.

Open app

Check before you connect.

It takes seconds. The free tier is enough for most users.