System Online

Autonomous
Security
for Smart Contracts

The first AI agent that autonomously audits, tests, and verifies your protocol's security. Deep reasoning meets terminal access.

PR #42
Fix: Smart Contract Logic
OPEN
contracts/Vault.sol
Solidity
Initializing scan...0%
12
13
14
15
16
function withdraw(uint amount) public {
require(balances[msg.sender] >= amount);
(bool sent, ) = msg.sender.call{value: amount}("");
require(sent, "Failed to send Ether");
balances[msg.sender] -= amount;

Critical Vulnerability Detected

Reentrancy attack vector identified. External call is made before state update.

Trusted by
Leading
Protocols

Our agents secure billions in TVL across the most complex DeFi ecosystems.

Why Choose PReview?

Enterprise-grade security auditing powered by autonomous AI agents.

Deep Reasoning
We prioritize depth over speed. Our agents perform extensive multi-step reasoning to understand context, not just syntax.
Sys.Module
Business Logic Focus
Beyond static analysis. We detect complex logic flaws and economic vulnerabilities that standard tools miss.
Sys.Module
Autonomous Verification
Agents have full terminal access to write and run tests, confirming vulnerabilities with actual PoCs.
Sys.Module
Custom Knowledge Base
Upload your documentation and specs. Agents ingest your unique context to audit against your specific rules.
Sys.Module
Contextual Research
Our system researches similar codebases and integrations to identify pattern-based vulnerabilities.
Sys.Module
Interactive PR Chat
Discuss findings directly in your PR. Collaborate with AI agents to refine fixes and understand risks.
Sys.Module
Custom Agents
Deploy custom agents tailored to your protocol's specific invariants and security requirements.
Sys.Module

How it Works

Connect Repositories

Grant access to your GitHub organization. Select repositories to monitor with a single click.

Automated PR Analysis

PReview automatically scans every pull request, identifying vulnerabilities directly in the code diff.

Verify & Chat

Interact with the agent in our web app. Request Proof-of-Concept (PoC) exploits and verify fixes.

app.preview.is/dashboard
Connected Repositories
defi-protocol-v2
Monitoring
governance-contracts
Monitoring
staking-rewards
Connect

PReview AI Knowledge Mesh

Context-rich PR audits grounded in your sources of truth

We hydrate Preview AI with the exact artifacts reviewers rely on, then run an autonomous audit tailored to every pull request.

PR RepoWeb DocsKnowledgebasePrev Audits
PReview AI synthesizes trusted sources into a PR audit
PReview AI
PReview AI

Your repositories, documentation, knowledge graphs, and historic audit findings flow into Preview AI so every review highlights gaps, verifies fixes, and summarizes risk in the pull request itself.

PReview AI