Drift Guard Agent Behavior Monitor

Detect personality drift, sycophancy creep, and capability degradation in AI agents before they become problems. Tracks behavior metrics over time against healthy baselines.

Detect personality drift, sycophancy creep, and capability degradation in AI agents before they become problems.

Drift Guard tracks agent behavior metrics over time, compares them against healthy baselines, and alerts you when your agent starts drifting from its intended personality or capability level.

The Problem

AI agents evolve during use. Sometimes that evolution is productive learning. Sometimes it's drift into undesirable behaviors:

• Personality drift: Agent becomes more verbose, changes tone, loses its edge
• Sycophancy creep: Excessive agreement, validation-seeking, compliment inflation
• Capability degradation: Hedging language increases, technical depth decreases, confidence drops
• Memory pollution: Corrupted context files influence all future responses

You don't notice it happening until your sharp, capable agent has turned into a people-pleasing chatbot.

What Drift Guard Does

1. Baseline Capture (drift_baseline.py)

• Record "healthy" agent behavior from known-good responses
• Analyze multiple samples to create robust baseline metrics
• Store baseline for ongoing comparison
• Compare baselines over time to track evolution

2. Continuous Monitoring (drift_guard.py)

• Analyze each agent response for behavior metrics
• Calculate drift score against baseline (0.0 = perfect, 1.0 = complete drift)
• Track metrics: response length, vocabulary diversity, sycophancy markers, hedging language, technical depth
• Record all measurements with timestamps
• Trigger alerts when drift exceeds configured thresholds

3. Trend Analysis (drift_report.py)

• Generate drift trend reports over time
• Detect anomalies (outlier measurements)
• Identify which specific metrics are changing
• Track whether drift is worsening or improving
• Time-range filtering (last 24h, last week, all time)

Quick Start

1. Configure

cp config_example.py config.py
# Edit config.py with your thresholds, patterns, and alert settings

2. Capture Baseline

Collect 10-20 agent responses that represent your agent's "healthy" behavior. Save each to a text file.

python drift_baseline.py capture --files response1.txt response2.txt response3.txt \
  --output baseline.json

3. Monitor

Each time your agent responds, analyze it:

python drift_guard.py agent_response.txt

Or pipe from stdin:

echo "Agent response here..." | python drift_guard.py --stdin

4. Review Trends

# Last 24 hours
python drift_report.py --hours 24

# All time
python drift_report.py

# JSON output for scripting
python drift_report.py --format json

Integration Examples

Integration with Agent Workflow

from drift_guard import DriftGuard

# Load config
from config import CONFIG
dg = DriftGuard(CONFIG)

# After agent responds
agent_response = "..."
result = dg.monitor(agent_response)

if result['alert_level'] == 'critical':
    print(f"ALERT: Agent drift detected ({result['drift_score']:.3f})")
    # Trigger recovery: load checkpoint, reset memory, etc.

Automatic Drift Checks via Cron

# Check drift every hour
0 * * * * cd /path/to/agent && python drift_guard.py latest_response.txt

# Weekly drift report
0 9 * * 1 cd /path/to/agent && python drift_report.py --hours 168 > weekly_drift.txt

Pairing with CPR (Context Preservation & Restore)

Drift Guard detects the problem. CPR fixes it.

# Monitor drift
python drift_guard.py agent_response.txt
# Drift score: 0.72 (CRITICAL)

# Restore from checkpoint
python cpr.py restore --checkpoint 2024-01-15-healthy

# Verify recovery
python drift_guard.py agent_response.txt
# Drift score: 0.12 (normal)

How It Works

Metrics Tracked

Drift Score Calculation

For each metric:

1. Calculate percentage difference from baseline
2. Apply configured weight (important metrics count more)
3. Average weighted differences across all metrics
4. Result: drift score from 0.0 (perfect baseline match) to 1.0 (completely different)

Alert Levels

• Warning (0.3): Minor drift detected. Monitor closely.
• Critical (0.6): Significant drift. Intervention recommended.
• Emergency (0.9): Severe drift. Immediate action required.

Use Cases

• Personality preservation: Ensure your agent maintains its configured tone and style
• Quality monitoring: Detect when response quality degrades over time
• Context corruption detection: Identify when bad memory files are influencing behavior
• Fine-tuning validation: Verify fine-tuned models maintain desired characteristics
• Multi-agent consistency: Monitor multiple agents to ensure behavioral consistency
• Recovery triggers: Automatically restore from checkpoint when drift exceeds threshold

What's Included

Requirements

• Python 3.8+
• No external dependencies (stdlib only)
• Works with any AI agent that generates text responses

quality-verified

License

MIT — See LICENSE file.

Author: Shadow Rose

⚠️ Disclaimer

This software is provided "AS IS", without warranty of any kind, express or implied.

USE AT YOUR OWN RISK.

• The author(s) are NOT liable for any damages, losses, or consequences arising from

the use or misuse of this software — including but not limited to financial loss,

data loss, security breaches, business interruption, or any indirect/consequential damages.

• This software does NOT constitute financial, legal, trading, or professional advice.
• Users are solely responsible for evaluating whether this software is suitable for

their use case, environment, and risk tolerance.

• No guarantee is made regarding accuracy, reliability, completeness, or fitness

for any particular purpose.

• The author(s) are not responsible for how third parties use, modify, or distribute

this software after purchase.

By downloading, installing, or using this software, you acknowledge that you have read

this disclaimer and agree to use the software entirely at your own risk.

DATA DISCLAIMER: This software processes and stores data locally on your system.

The author(s) are not responsible for data loss, corruption, or unauthorized access

resulting from software bugs, system failures, or user error. Always maintain

independent backups of important data. This software does not transmit data externally

unless explicitly configured by the user.

Support & Links

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