Engine Online — v4.2.0 BETA

Find Real Vulnerabilities. Zero False Positives.

Sentinel's 75-layer deterministic pipeline plus AI specialists, validated on 24,000+ real contracts. Audit Solidity, Vyper, Rust, Move, and Cairo across 16+ chains in milliseconds.

Try Free Scan API Reference Sample Report Open-World Oracle
24,000+
Contracts Validated
99.9%+
Precision*
~300 ms
Deterministic Scan
~3–8 s
AI Review
16+
Chains Supported

*Across 24,000+ verified contracts, every finding in the high-confidence bucket has remained a true positive. Lower-confidence signals appear separately and are sanity-checked by the AI Review tier.

Scanning protocols across these chains daily
Ethereum Base BSC Polygon Arbitrum Optimism Solana Sui Starknet

Multi-Chain, Multi-Language

5 languages, 16 chains. The most comprehensive coverage in automated auditing.

Solidity
Comprehensive coverage · Ethereum, BSC, Polygon, Arbitrum, Base +11
Vyper
Compiler CVE detection · Ethereum
Rust (Solana)
Anchor & native · PDA, CPI, signer checks
Move (Sui)
Object safety · Capability checks
Cairo (Starknet)
StarkNet · Felt arithmetic, L1↔L2

How It Works

Three steps to a comprehensive security audit. No compilation required.

1

Paste or Upload

Paste source code, upload a file, or enter an on-chain address. We support Solidity, Vyper, Rust, Move, and Cairo.

2

Deterministic + AI Review

Every contract is first scanned by the deterministic pipeline (zero false positives by construction), then optionally reviewed by AI specialists for protocol-aware classification, adversarial evasion detection, and formal verification spec generation.

3

Get Report

Detailed findings with severity ratings, PoC exploit templates, fix suggestions, and formal verification specs. Reports linked to your wallet address — access anytime from My Reports.

Five Tiers. Structurally Zero False Positives.

High-confidence findings stay in their own bucket so what you act on is what matters. Pay-as-you-audit, no subscriptions.

Free
$0
Quick safety scan · 3/day
  • Safe / Risky verdict
  • Holder + LP counts
  • Creator/owner flags
  • 3 audits per day
Try Free
Basic Det
$10 USDC
Full deterministic pipeline review
  • Everything in Free
  • Full deterministic pipeline review
  • Findings bucket (Prec=1.000)
  • PoC sketch templates
  • ~300ms audit
Get Basic
Full AI
$69 USDC
+ Halmos formal verification + risk_surface
  • Everything in AI Basic
  • Halmos formal verification templates
  • NatSpec spec-vs-impl matching
  • risk_surface bucket (ambiguous)
  • Counterfactual perturbation
Get Full AI
Pro
$149 USDC
+ Foundry exploit cascade
  • Everything in Full AI
  • Arc D Foundry PoC cascade
  • N-round dialectic verification
  • Agent-based economic simulator
  • Goal-oriented attack planner
  • Operational exploit verdicts
Get Pro

Pay with ETH, BNB, or USDC on Ethereum, BSC, or Base. Real Enterprise tier ($1.5k+/audit, $5k+/mo with SLAs) launches post-brand-traction.

Audit Your Contract

Paste source code or fetch by on-chain address. Free basic scan included.

What do you want to check?

Holder concentration, hidden mints, fee-on-transfer drains, tax manipulation, honeypot patterns.

Full security audit of any deployed contract: reentrancy, access control, oracle exposure, MEV.

Paste your contract source for the same audit your customers will see post-deploy.

Shown on PDF cover and passed (sanitized) to AI verifier layers.

We inspect bytecode for rug signals (mint / blacklist / pause / settable fee / selfdestruct) and analyze holder distribution. Works on bytecode-only — no verified source required.

Bytecode could not be retrieved (network or API error). The contract was NOT analysed — treat this as no-data, not safe. No bytecode found at this address on the selected chain. Either it's an EOA, a different chain, or the contract is too new for the indexers.
· ·
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My Reports

My Reports

All your paid audits are stored server-side. Download your PDF anytime — no risk of losing your report.

Privacy note: this list is keyed to your wallet address and readable by anyone with that address (same as a block explorer). Reports themselves and your source code stay private. Details in our Privacy Policy.

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Free scans are stored in your browser. Paid audits (Audit / Deep Audit) are stored server-side and appear here.

Date Contract Tier Verdict Findings Download
Want to discuss about the audit? Talk with AI specialist
Ask follow-up questions about your findings — the specialist cites lines from your contract directly.
Open chat →
AI specialist — cites lines + finding ids from your contract.
Ask the AI specialist about your audit. Examples:
Thinking
Chat is locked for this audit. Sign with your wallet to unlock.

My Token Audits

Memecoin / token rug-signal & holder-distribution audits. Bytecode-only — works on any deployed token, no verified source required.

Run a token audit
Paste an ERC-20 token address. We’ll inspect bytecode for rug signals (mint / blacklist / pause / settable fee / selfdestruct) and analyze holder distribution.
Bytecode could not be retrieved (network or API error). The contract was NOT analysed — treat this result as no-data, not safe. No bytecode found at this address on the selected chain. Either the address is an EOA, a different chain, or the contract is too new for the indexers. The audit did NOT run rug-signal extraction.
· ·
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Date Token Chain Verdict Severity Holders Top-10 PDF

Leaderboard

Top security scores from audits on the platform.

Total Audits
Avg Score
Top Score
# Contract Score Grade Verdict

Active Monitors

Recent Alerts

No alerts for this contract yet. Monitoring is active.

How We Compare

Real benchmark on 19 DeFiHackLabs exploit contracts ($2.6B in losses).

FeatureSentinelSlitherAderyn
Contracts Analyzed19/19 (100%)6/19 (32%)8/19 (42%)
True Positives13 TP (FP=0)5 TP7 TP
Compilation RequiredNoYes (solc)Yes (Foundry)
Languages521
AI SpecialistsYesNoNo
False Positive Rate0.0%UnknownUnknown
SpeedSub-second–5s2–31s0.5s
PoC TemplatesYesNoNo

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