free penetration test
A free pen test,
in minutes, not weeks.
Muster's AI agents attack your live app like real attackers and hand you proven, exploitable findings with the exact fix. A traditional pen test costs $20k and takes weeks. This one is free and starts now.
free · no card · first findings in ~10 minutes
Muster's agents have found and been rewarded for real exploits in the security programs of:
findings via public bug-bounty programs · not affiliated with or endorsed by these companies
what you get
A pen test you can actually act on.
✓Proven exploits, not maybes
Every finding is replayed and proven, with the exact request the agent sent. No 1,200-item scanner dump to triage.
✓The fix, in plain English
Each finding comes with the one change that closes it, written so any engineer can ship it today.
✓A report you can share
Hand results to a customer, an auditor, or your team. Add a signed, attested report when you need a formal deliverable.
✓It keeps watching
The first run is free. After that, Muster can re-test on every deploy and every night, so new holes surface the moment they appear.
the math
The old way of buying a pen test is broken.
Traditional pen test
- ·$20,000+ per engagement
- ·Weeks to schedule and run
- ·A PDF that's stale in a week
- ·Once a year, if that
Muster
- ✓Free to start, no card
- ✓First exploits in ~10 minutes
- ✓Proven findings, with the fix
- ✓Re-tests every deploy, all year
scope
What the pen test covers.
The whole shipped surface, including the classes AI-generated code fumbles most.
for reviews & compliance
Need it for SOC 2, a vendor security review, or due diligence?
Start with the free pen test, then add a signed, attested report when you need a formal, auditor-ready deliverable. Same proof, in a form procurement will accept.
Your pen test, in three steps.
Point us at your app
Paste your URL (and optionally connect your repo for deeper coverage). Setup takes minutes.
The agents attack
Muster's AI probes your live app like real attackers and proves what is actually exploitable.
Get proof and the fix
Each exploit lands with the exact request and a one-line fix. Export a report anytime.
“It's like having a pentester on call. It found an access-control gap our scanners missed and handed us the exact fix.”
Pen test questions.
+Is this a real penetration test?
Yes. Muster's AI agents run real, non-destructive attacks against your live app and prove what is exploitable, across the same classes of flaws a human pen tester checks. For an auditor-ready, signed deliverable, add an attested report.
+Can I get a report to share with a customer or auditor?
Yes. Export your findings and proofs anytime. For formal security reviews or compliance, add a signed, attested report as a one-off.
+Is it safe to run against production?
Yes. Muster is non-destructive by default: scoped, rate-limited, and read-only where it can be. You authorize every target and confirm you own it, and you can point it at staging first if you prefer.
+What do I need to prepare?
Just your app's URL. Connecting your repo unlocks deeper coverage, but it is optional. There is no agent to install and no sales call.
+What's free, and what's paid?
The free pen test covers one app with a full attack run and proven findings. Paid plans add more assets, continuous re-tests on every deploy, integrations, and reports.
+Is it humans or AI doing the testing?
AI agents do the attacking, at machine speed. That is how it is fast enough to start in minutes and free to try. Humans stay in the loop for attested reports.
Your free pen test is 10 minutes away.
free · 1 app · no card · results in ~10 minutes
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