Trust Scores

The Trust Score is a 0-100 metric representing an agent's trustworthiness based on its configuration and behavior.

Calculation

Trust Score = (AIVSS × 40%) + (Behavioral × 35%) + (Alignment × 25%)

Component	Weight	Source	Range
AIVSS	40%	Risk assessment (Assess phase)	0-100
Behavioral	35%	Policy compliance (Authorize + Monitor)	0-100
Alignment	25%	Goal consistency (Verify phase)	0-100

Components

AIVSS Score (40%)

Based on the agent's inherent risk profile:

• Configured at agent creation
• 14 dimensions across access, capability, impact
• Static unless re-assessed
• Higher score = lower inherent risk

Behavioral Score (35%)

Based on runtime compliance:

• Starts at 100 for new agents
• Decreases with violations
• Increases with compliant behavior
• Updated continuously

Factors:

Event	Impact
Compliant operation	+0.01 per 10 operations
HITL approval granted	+0.5
Policy violation (DENY)	-2 to -5
TERMINATE triggered	-10 to -15
Approval rejected	-2
Approval timeout	-1

Alignment Score (25%)

Based on goal consistency:

• Starts at 100 for new agents
• Updated per session based on goal alignment checks
• Uses LLM evaluation (configurable)

Calculation per session:

Session Alignment = avg(operation_alignment_scores)
Overall Alignment = weighted_avg(recent_sessions, decay=0.95)

Score Ranges

Score	Description
90-100	Excellent - highly trusted
75-89	Good - standard trust
50-74	Moderate - developing trust
25-49	Low - requires attention
0-24	Untrusted - supervised mode

Score Display

Throughout the UI, Trust Score appears with:

┌─────────────────┐
│      87         │  ← Large number
│   ━━━━━━━━━     │  ← Color bar
│    TIER 2       │  ← Tier badge
│    ↑ +3         │  ← Trend indicator
└─────────────────┘

Color coding:

Tier	Color
Tier 1 (90+)	Green
Tier 2 (75-89)	Blue
Tier 3 (50-74)	Yellow
Tier 4 (25-49)	Orange
Untrusted (below 25)	Red

Score Evolution

New Agents

Initial Trust Score:
├── AIVSS: (from risk profile) × 40%
├── Behavioral: 100 × 35% = 35
├── Alignment: 100 × 25% = 25
└── Total: varies by risk profile

Example for Level 2 (Low Risk) profile:

• AIVSS: 80 × 40% = 32
• Behavioral: 100 × 35% = 35
• Alignment: 100 × 25% = 25
• Initial Score: 92 (Tier 1)

Over Time

Day 1:  92 ━━━━━━━━━━━━━━━━━━ Tier 1
Day 7:  88 ━━━━━━━━━━━━━━━━━━ Tier 2 (minor violations)
Day 14: 84 ━━━━━━━━━━━━━━━━━━ Tier 2 (stable)
Day 21: 86 ━━━━━━━━━━━━━━━━━━ Tier 2 (recovering)
Day 30: 89 ━━━━━━━━━━━━━━━━━━ Tier 2 (approaching Tier 1)

Recovery

To improve a degraded score:

1. Consecutive compliance - No violations for 7+ days
2. High operation volume - More compliant operations
3. HITL success - Approved requests
4. Goal alignment - Consistent alignment scores

Recovery rate: typically +0.5 to +1.5 points per day with good behavior.

Related

• Trust Tiers - How scores map to trust controls
• Assess Phase - Configure the AIVSS component
• Adapt Phase - Watch trust evolve over time