Read case study
Catch threats before they become headlines

Real-time security for onchain finance

Guardrail is a continuous monitoring, detection & response security platform built for DeFi. We give DeFi protocols real-time visibility to catch issues continuously, prevent costly exploits, and protect what matters onchain.
GET STARTED
play interview
Protocols are switching from competing monitoring tools and in-house tooling to Guardrail as their post-deployment, real-time security solution.

$14.8B lost
to crypto exploits

21%
annual
increase
Read our analysis
In 2025, don’t be the next headline. Protect your protocol
with Guardrail.
The Cost of Crypto Hacks (2020–2024)
Estimated figures based on publicly available data.
DeFi Exploit Losses ($B)
2020
2021
2022
2023
2024
Annual Trend
Designed to
secure
your protocol, wherever and however you build
CA: 0x565e3c9df8c88718f0c04f505283c056fff397a9
Your
ecosystem
Guardrail isn't just another tool. It's a security layer that listens, learns, and integrates with the systems you already trust.
Your
channels
Connected to your CI/CD, ops stack, and on-call systems, we move as fast as you do.
Your
system
A real-time firewall for your protocol’s users, systems, and funds.
Your
risks
From economic risk to invariants, Guards are custom-fit to your protocol’s needs.
Your
platform
Guardrail executes checks per block, function, or event across testnet, app-chains, and mainnet.
We’re on
guard
so you don’t have to be
Guards programmatically check each transaction’s logic and state, flagging risks in real-time and responding automatically.
Setup guards customized to your protocol today.
Chart

180+

Contracts monitored

295+

Guards

$1.3B

Assets protected
Sub-second transaction scanning
Live
across 24+ chains

End-to-End web3 security

Guardrail doesn’t just monitor your protocol, it acts on what it sees. From early detection to automated responses, it’s a full-stack defense system that protects your users, your treasury, and your reputation.
Monitor
Watch every transaction.
Track onchain transactions, offchain inputs, and protocol-specific behaviour across every chain in real-time.
Alert
Signal over noise, every time.
Surface only what matters — with context-aware notifications for threats, anomalies, or policy breaches.
Respond
Act fast, automatically.
Auto-trigger protective actions when risk is detected — pause functions, flag wallets, or escalate to your team.
Prevent
Stop exploits before they start.
Stop known threats before they hit production by simulating risky transactions or enforcing runtime checks.

Who we protect

Guardrail is for those who can’t afford surprises.
We bring real-time and protocol-aware security. Whether you're a regulated institution or a DeFi-native team, we bring context-aware security to your stack, from chains and smart contracts to users and operations.
Crypto Native
Runtime protection to secure smart contracts, wallets, bridges, and mempools with context-aware onchain monitoring.
DAOs
Protocol Teams
Validators
NFT Projects
Web3
dApps
Institutions
Enterprise-grade Web3 security to monitor transaction flows, detect financial threats, and meet compliance in real time.
Exchanges
Custody Providers
Fintechs
Market Makers

Trusted by leading DeFi protocols

Hear from protocols using Guardrail to stay secure.
"Guardrail has been essential as we've scaled our protocol. Their team is really scrappy, willing to make custom solutions rather than just handing us out-of-the-box software. We're now using Guardrail for general-purpose monitoring and automations beyond just security to create a better experience for our users. The level of automation Guardrail brings to monitoring is going to be really crucial as the number of smart contracts we deploy increases exponentially."
Thomas Hepner
CTO & Co-Founder
Read case study
"Guardrail provides peace of mind, tying directly into our PagerDuty system and actively monitoring critical positions. We've avoided costly liquidation events thanks to timely alerts. "We've significantly reduced the operational burden and increased our team's confidence to respond proactively rather than reactively. Guardrail has become essential to our security approach."
Jwei
Core Contributor
Read case study
"I know a lot of people who use Guardrail, and I've been approached by many Guardrail competitors. But no one can tell me anything that will convince me not to use Guardrail. Guardrail came in saying, Let's solve a problem for you, what do you worry about?' rather than just trying to sell a service."
Andy Bohutsky
Founder
Read case study
"It becomes very real when you have to put your own money in the system. Guardrail helped us model potential threats beyond basic security - if we see certain behaviours, we can identify manipulation attempts and respond quickly."
Francesco Mifsud
Security Lead
Read case study
Guardrail is backed by leading web3 investors

Prevent headlines. Protect what matters.

Start Monitoring
Get Started - Book ConsultationTelegramXDocs
Real-time security for onchain finance