Call-flood protection for AI voice agents.Purpose-built detection, enforced by the network.

Every call scored before it's answered. A number that floods one agent is flagged for every agent we protect.

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The cost of one malicious call

Twilio$0.01

Deepgram$0.01

ElevenLabs$0.08

ClaudeEstimated at about $2.50 per million input tokens once prompt caching is blended in, and $5 per million output. Every reply re-reads the whole conversation, so input is nearly all of it.$0.03

1 minute in

This minute

$0.13

This call so far

$0.13

Each minute costs more than the last. Every reply re-reads the whole conversation so far, so the model's share grows with every turn while the rest stays flat.

015304560 min

Turns

Average context window

Tokens processed

12k

The cost of a flood

1,0001

Calls

100

Each, at 1 min

$0.13

The invoice

$13

Each call is the one you set up above. They don't come one at a time, and they don't come while you're watching. A script places them at two in the morning, when nobody is looking at the dashboard.

One hour is enough.

Two ways it ends

Without a spend cap

$13

Lands on the card at the end of the month. Every vendor billed you for real calls, because to them they were. Nobody refunds a flood.

With a spend cap

Dark until it stops.

The cap trips an hour in. The vendor stops serving, your agent stops answering, and every real caller hears nothing. Raising the cap doesn't help: they spend that too. You are down until someone works out what is arriving and stops it.

Either way, they got what they came for. And they will be back.

When you least expect it.

What we watch for

Arrival

01 of 06

Too many, too fast. Or paced to look like a busy afternoon.

Where it sits

Behind the number, never in the call.

Two events from your call server, or a server URL on your platform. Setup is under ten minutes.

Never hears audio

Inputs are phone numbers, timestamps, and turn events your platform already emits.

Never in the call path

Events are forwarded fire-and-forget. If Murusai went dark, every call would still complete.

Your controls, not ours

Ending a call goes through your platform's own call controls. Where a platform has none, you get the alert and act.

Two plans.

Prices per month, billed yearly

What you get	Watch Free Alerts you	Guard $20($240 a year) Ends the call	Enterprise Custom Talk to us
Protected numbers	3	Unlimited	Unlimited
Calls scored	100 a day	100,000 a day	Unlimited
Network reputation	Included	Included	Included
Live monitor	Not included	Included	Included
Alerts by webhook and email	Included	Included	Included
Alerts by text and phone call	Not included	Included	Included
Ends bad calls for you	Not included	Included	Included
The gate	Not included	Included	Included
	Start free	Start with Guard	Talk to us →