0.2.0

Agent Sentinel — Production Readiness Platform for AI Agents

Agent Sentinel inspects, improves, and stress-tests AI agents before they ship. It performs static + semantic analysis of an agent's system prompt, tool definitions, memory, and framework structure, produces a risk report, rewrites the prompt to fix every flagged issue, and runs adversarial prompt campaigns to verify the fixes hold under pressure.

Repository Structure

agentsentinel/
├── src/agentsentinel/
│   ├── sentinel.py                  # AgentSentinel — main entry point
│   ├── compliance/                  # YAML rule files per standard
│   │   ├── hipaa.yaml
│   │   ├── soc2.yaml
│   │   ├── owasp.yaml
│   │   └── pii.yaml
│   ├── core/agents/
│   │   ├── intake/                  # Framework detection & profile extraction
│   │   │   ├── agent_intake.py      # AgentIntake orchestrator
│   │   │   └── detectors/
│   │   │       ├── langgraph.py     # LangGraph detector
│   │   │       └── filepath.py      # Source file detector
│   │   ├── inspector/               # Static + semantic analysis
│   │   │   ├── orchestrator.py      # InspectorAgent
│   │   │   ├── aggregator.py        # Combines analyzer outputs
│   │   │   └── analyzers/
│   │   │       ├── prompt.py        # Constraint, ambiguity, injection checks
│   │   │       ├── tools.py         # Tool quality scoring
│   │   │       ├── memory.py        # Memory backend risk detection
│   │   │       ├── framework.py     # Graph depth, loops, HITL, cycle detection
│   │   │       ├── semantic.py      # LLM-powered semantic analysis
│   │   │       ├── policy.py        # Policy PDF compliance check
│   │   │       └── compliances.py   # HIPAA / SOC2 / OWASP / PII rule engine
│   │   ├── optimizer/               # DSPy-based prompt rewriter
│   │   │   ├── prompt_optimizer.py  # PromptOptimizer (parallel + sequential fixes)
│   │   │   ├── signatures.py        # DSPy fix signatures per risk category
│   │   │   ├── policy_guard.py      # Final policy compliance gate
│   │   │   └── evaluations.py       # DSPy optimizer metric
│   │   └── tester/                  # Adversarial testing pipeline
│   │       ├── tester.py            # TestAgent orchestrator
│   │       ├── adversarial_prompts_generator.py
│   │       ├── runner.py            # Runs prompts against live agent
│   │       ├── evaluator.py         # Scores each response
│   │       └── report.py            # Generates audit_report.json + .md
│   ├── models/
│   │   ├── agent.py                 # AgentProfile, InspectedAgentProfile, RiskFlag
│   │   ├── policies.py              # ComplianceViolation, ComplianceAnalysis
│   │   ├── intake.py                # ExtractionResult
│   │   └── prompt.py                # OptimizedResult
│   └── utils/
│       ├── llm.py                   # Shared agnostic LLM call (call_llm)
│       ├── policies.py              # PDF policy parser
│       └── logger.py
├── demo/                            # Example agents (LangGraph, LangChain, CrewAI, etc.)
├── tests/
├── main.py
├── pyproject.toml
└── .env

Installation

pip install agentsentinel-ai

uv add agentsentinel-ai

Quick Start

from agentsentinel.sentinel import AgentSentinel

sentinel = AgentSentinel()
result = sentinel.audit(
    agent,
    compliance=["hipaa", "owasp"],
    pass_threshold=85.0,
)
print(result["report"]["summary"])

Set your LLM provider in the environment before running:

export LLM_MODEL=groq/llama-3.3-70b-versatile
export LLM_API_KEY=your_api_key_here

From source:

git clone https://github.com/nitin3150/agentsentinel.git
cd agentsentinel
python -m venv .venv && source .venv/bin/activate
pip install -e .
cp .env.example .env   # set LLM_MODEL and LLM_API_KEY

Environment Variables

Agent Sentinel is LLM-provider agnostic. All LLM calls go through LiteLLM, so any supported provider works out of the box.

# Required — any litellm-compatible model string
LLM_MODEL=groq/llama-3.3-70b-versatile

# API key for your chosen provider
LLM_API_KEY=your_api_key_here

Provider examples:

Optional flags:

LLM_TIMEOUT=30                   # default timeout for all LLM calls (seconds)
POLICY_TIMEOUT=30                # override for policy analyzer
SEMANTIC_TIMEOUT=30              # override for semantic analyzer
COMPLIANCE_TIMEOUT=30            # override for compliance analyzer

AGENTSENTINEL_LOG_PROMPTS=false  # set true to log full prompts (avoid in production)
AGENTSENTINEL_SAFE_MODE=true     # disables dynamic imports in filepath detector

Core Workflow

flowchart LR
    A[Your Agent / Source File] --> B[AgentIntake\nFramework detection + profile extraction]
    B --> C[InspectorAgent\nStatic analyzers run first\nprompt · tools · memory · framework]
    C --> D[Concurrent LLM analyses\nsemantic · policy · compliance]
    D --> E[InspectedAgentProfile\nrisk_flags · scores · compliance_results]
    E --> F[TestAgent\nAdversarial stress test]
    F --> G{Pass rate ≥ threshold?}
    G -->|yes| H[audit_report.json + .md\nAudit complete]
    G -->|no| I[PromptOptimizer\nDSPy-based rewrite]
    I --> J[Re-inspect with improved prompt]
    J --> F
    J -.->|max iterations reached| H

Four Operations

1. inspect(agent) — risk analysis

Extracts the agent's system prompt and tools, runs four static analyzers synchronously, then fires three LLM-powered analyzers concurrently:

Returns an InspectedAgentProfile with risk_flags, scores, policy_violations, and compliance_results.

from agentsentinel.sentinel import AgentSentinel

sentinel = AgentSentinel()
profile = sentinel.inspect(
    agent,                             # compiled LangGraph graph (or other framework)
    system_prompt="...",               # optional override
    policies="sample_policies.pdf",    # optional policy PDF
    compliance=["hipaa", "soc2"],      # optional — or "All" for all standards
    source_code="...",                 # optional — pass source for live agents
)
print(profile.overall_risk)            # low / medium / high
print(profile.risk_flags)
print(profile.compliance_results)      # per-standard PASS/FAIL + violations

Pass a custom LLM at construction time, or let it fall back to LLM_MODEL / LLM_API_KEY:

sentinel = AgentSentinel(providers=[
    {"model": "openai/gpt-4o", "api_key": "sk-..."},
])

2. optimize(profile) — prompt rewriting

Takes the InspectedAgentProfile and rewrites the system prompt + tool definitions to fix every flagged risk using DSPy ChainOfThought signatures. Sequential fixes (injection → persona) run first; remaining fixes run in parallel and are merged.

Risk categories fixed:

• INJECTION_VULNERABLE — adds input-validation guardrails
• PERSONA_DRIFT — anchors role and persona
• CONSTRAINT_MISSING — adds policy- and regulation-grounded constraints
• AMBIGUOUS_INSTRUCTIONS — rewrites vague phrases
• SCOPE_OVERFLOW — narrows agent boundaries
• HALLUCINATION_PRONE — adds grounding and abstention rules
• MEMORY_RISK — adds memory-handling constraints
• POLICY_VIOLATION — resolves detected policy violations
• TOOL_QUALITY_LOW — rewrites low-scoring tool descriptions and parameters

result = sentinel.optimize(profile, policies="sample_policies.pdf")
print(result.improved_prompt)
print(result.change_log)

3. stress_test(agent, profile) — adversarial stress test

Three-step pipeline:

1. Generate — DSPy generates adversarial prompts across 10 attack categories → adversarial_prompts.json
2. Run — fires each prompt against the live agent → agent_responses.json
3. Evaluate — DSPy scores each response for policy compliance → audit_report.json + audit_report.md

Rate limit errors are caught and logged — partial results are reported rather than crashing.

report = sentinel.stress_test(agent, profile, policies="sample_policies.pdf")
print(report["summary"])   # pass_rate_pct, passed, failed, skipped, total

4. audit(agent) — full automated loop

Runs the complete pipeline with an optimization loop. If stress test pass rate is below pass_threshold, it rewrites the prompt, re-inspects, and tests again — up to max_iterations times.

result = sentinel.audit(
    agent,
    policies="sample_policies.pdf",
    compliance=["hipaa", "soc2", "owasp", "pii"],  # or ["All"]
    pass_threshold=85.0,    # % pass rate to consider audit complete (default: 80)
    max_iterations=3,       # max optimize → re-test cycles (default: 3)
)

print(result["profile"])    # final InspectedAgentProfile
print(result["report"])     # final stress test report
print(result["iteration"])  # how many optimization cycles ran

Compliance Standards

Pass compliance=["All"] to check all four standards at once. Rule-based checks run first; ambiguous cases are confirmed by LLM. All standards are checked concurrently.

Risk Categories

Supported Frameworks

For unsupported frameworks, pass system_prompt, tool_definitions, and optionally source_code directly to inspect().

Running Tests

uv run pytest

License

MIT