Stop crypto fraud
before funds move.
Monchain Check is a real-time, low-latency security API that blocks crypto fraud at transaction execution for wallets, exchanges, and Web3 platforms.
Trusted by innovative teams
Problem
Why current tools fail
Stolen funds
Losses before teams can react.
Reactive tooling
Alerts after transactions settle.
Complex UX
Security layers confuse users.
Delayed detection
Fraud gets flagged only after capital flees.
Fragmented coverage
Cross-chain flows slip past siloed monitors.
Solution
How Monchain solves it
Block at execution
Stop risky flows before they broadcast.
Explainable scores
Transparent rationale for every threat flag.
Human-in-loop review
Escalate edge cases to analysts instantly.
Low-latency (<30ms) API
Real-time scoring without slowing ops.
Agentic defense mesh
Autonomous co-pilots enforce policy across wallets.
Monchain Check
Built for Web3 at scale
Detects and blocks suspicious transactions before they settle. Infrastructure-grade security for wallets, exchanges, and Web3 teams.
- Low-latency API
- Transaction-level risk scoring
- Multi-chain support
- Designed for exchanges, wallets, DeFi
Developer + enterprise
B2B product features
Real-time blocking
Deterministic allow/block in <30ms.
POST /api/check
{
"tx": "0x...",
"chain": "eth-mainnet"
}Policy engine
Composable rules per product.
risk.policies.create({
id: "cex-withdrawals",
score: 0.92
})Explainability
Feature attributions inline.
response.reason = [ "Known honeypot", "PnL anomaly" ]
Auditable logs
Immutable traces + exports.
GET /logs?tx=0x...
Multichain support
ETH, SOL, ARB, more.
supportedChains(): string[]
Easy integration
SDK + webhook helpers.
import {Monchain} from '@monchain/sdk'Transaction economics
Infrastructure-scale ROI
Blend monthly volume with pricing to model revenue impact for investors and partners.
Monthly transactions
8,000,000
Blended price
$0.046
Projected revenue
$368,000
Roadmap
Execution timeline
Q1 2026
Launch Wallet beta
Consumer wallet with proactive defense.
Q2 2026
10-15 B2B pilots
Wallets, exchanges, payment processors.
Q3 2026
500K MAU
User growth and engagement.
Q1 2027
Launch HEX
Hybrid exchange with embedded checks.
Monchain Wallet (Coming Soon)
Join the waitlist
A proactive crypto wallet designed to protect users from fraud before it happens.