Security
SharkBlock combines on-chain token screening with optional Anti-MEV protection on every trade.
Token Screening (Always On)
Every token your bot considers is screened against on-chain data before a position can open. Screening uses the same enriched data stream that powers strategy matching, so checks happen in real time without slowing down execution.
What We Check
- Buy tax — percentage taken on every buy by the token contract
- Sell tax — percentage taken on every sell by the token contract
- Burn rate — percentage burned on every transfer
- Mint authority — whether new tokens can still be minted (revoked = safer)
- Transfer pausable — whether the token contract can freeze transfers
- Balance mutable — whether the contract can modify holder balances
- Blacklist status — whether the contract maintains a blocklist
- Top-holder concentration — top 10 / 50 / 100 / 200 holder %
- Deployer history — how many tokens the deployer has shipped before, how many migrated
You can use any of these as filters in your strategy’s entry conditions. See Security Filters for details on each.
Anti-MEV Protection (Optional)
Anti-MEV routes your transactions through private bundle landers (Jito, Nozomi and others, via Mobula) so they skip the public mempool where sandwich-attack bots operate.
Three levels — off, reduced, secured — configurable per strategy on both buy and sell presets.
What Security Doesn’t Cover
Security screening catches on-chain red flags. It does not, and cannot:
- Predict future price movement
- Detect off-chain coordination (e.g. a paid pump group)
- Replace your strategy’s risk management (stop-loss, position sizing)
- Guarantee a token is legitimate — only flag known mechanical risks
Use screening as a foundation, not as a substitute for judgment.