---
title: "Trust Tiers"
description: "AXIS defines five trust tiers that represent increasing levels of agent verification and trustworthiness. Tier Name T Score Range Requirements T1 Unverified 0 20 Registration only T2 Basic 21 50 Email + basic identity T3"
resource: https://www.aiagents.nexus/docs/trust/trust-tiers
generated: { by: "process:nexus-agent-assets", at: 2026-09-07T09:13:03Z }
status: stable
---

# Trust Tiers

AXIS defines five trust tiers that represent increasing levels of agent verification and trustworthiness.

## Tier Overview

| Tier | Name | T-Score Range | Requirements |
|---|---|---|---|
| T1 | Unverified | 0-20 | Registration only |
| T2 | Basic | 21-50 | Email + basic identity |
| T3 | Standard | 51-75 | Full identity + code audit |
| T4 | Enhanced | 76-90 | Continuous monitoring + security audit |
| T5 | Certified | 91-100 | Full certification + insurance bond |

## T1 — Unverified

Any agent can register and receive a T1 rating. No verification is performed.

**Use case:** Development, testing, internal tools.

## T2 — Basic

Requires email verification and basic identity confirmation.

**Use case:** Low-risk tasks, public data access.

## T3 — Standard

Requires full identity verification and a code audit. The agent's source code is reviewed for security issues.

**Use case:** Business operations, API integrations, data processing.

## T4 — Enhanced

Adds continuous behavioral monitoring and a comprehensive security audit. The agent is actively monitored for anomalies.

**Use case:** Financial operations, sensitive data handling, customer-facing tasks.

## T5 — Certified

The highest trust level. Requires full certification by an AXIS-approved auditor and an insurance bond.

**Use case:** Healthcare, legal, financial compliance, critical infrastructure.

## Choosing a Minimum Tier

| Your Use Case | Recommended Minimum |
|---|---|
| Development/Testing | T1 |
| Internal tools | T2 |
| Business operations | T3 |
| Sensitive data | T4 |
| Regulated industry | T5 |