Trelo is in beta — early access members get priority onboarding and bonus credits. Join early access

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Agent

Trust middleware
for AI agents

The runtime safety layer that stops agent loops, blocks attacks, and slashes your API bill — all in one line of code.

Nine layers.
One proxy.

L1

Circuit Breaker

Stops runaway agent loops before they burn your budget.

L2

Deduplication

Catches duplicate actions — even when rephrased. Never charge a customer twice.

L3

Prompt Firewall

Blocks injection attacks, internal URLs, and secret leaks before they reach your model.

L4

Cost Policies

Set per-agent budgets. Get alerts before things spiral out of control.

L5

Audit Trail

Every tool call, every decision — logged and searchable. Compliance-ready.

L6

Retry Intelligence

Smart backoff that cuts failure costs by 90% instead of hammering the same error.

L7

Side-effect Safety

Guarantees payments process once. Emails send once. No double-writes. Ever.

L8

Model Routing

Auto-failover between models when quality degrades or costs spike.

L9

Silence Detection

Heartbeat monitoring. No more agents going dark without anyone noticing.

BY THE NUMBERS

What we're seeing in private beta.

0%
Token waste reduction
0%
Failure cost reduction
0+
Security signatures
0
Protection layers deployed

Two steps.
Zero config.

1

Install the guard

Setup once

One command. Python, FastAPI, SQLite. No external services, no config files, no infrastructure changes.

pip install trelo
2

Wrap your agent

Runtime

Add one line to your agent code. Circuit breakers, dedup, firewall, and audit trail activate immediately.

agent = Agent(guard="trelo")
shell
WAITLIST

Get early access

Be the first to try Trelo. No spam, just early access.

PRICING

Start free.
Scale when ready.

Requests / month10K/mo
Agents3
Log retention7 days
SSO
Cost policies
Testing sandbox
Compliance reports
DashboardBasic
Model routingBasic

Pro

$29/mo

Get started
Requests / month100K/mo
Agents10
Log retention30 days
SSO
Cost policies
Testing sandbox
Compliance reports
DashboardAdvanced
Model routingAdvanced

Team

$299/mo

Start trial
Requests / month500K/mo
AgentsUnlimited
Log retention90 days
SSO
Cost policies
Testing sandbox
Compliance reports
DashboardTeam
Model routingAdvanced
EnterpriseCustom

Dedicated support, SSO, compliance reports, unlimited everything.

Contact us

Open source? Self-host Trelo for free. MIT licensed. GitHub →

One line of code.
Eight layers of protection.

Your agents should ship fast, not burn your API budget at 3 AM.