agent-guardian 1.0.0rc3

Open-source red teaming toolkit for AI agents, RAG systems, MCP servers, and tool-using LLM applications.

AgentGuardian

Open-source red-team testing toolkit for agentic AI systems.

96 attack probes · 11 attacker agents · OWASP ASI 2026 (all 10), 11+ MITRE ATLAS v5.4.0 techniques (see coverage matrix for the exact set; ~85% of techniques are out of scope for a black-box agent scanner) and CSA Agentic-RT (all 12) mappings · SARIF + PDF reports · runs offline.

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What it is

AgentGuardian is a testing toolkit that runs adversarial probes against your agent — LangGraph, CrewAI, OpenAI Agents SDK, AutoGen, ADK, Strands, or any HTTP endpoint — and produces a signed-style evidence bundle you can hand to security review.

It ships 96 attack probes organised against three public taxonomies:

• OWASP Top 10 for Agentic Applications 2026 (ASI01–ASI10, all 10 categories covered)
• MITRE ATLAS v5.4.0 (February 2026 release) — 11+ techniques covered at the agent's I/O surface; the remaining ~85% of the v5.4.0 catalogue (training-pipeline / ML-platform-internal attacks) is out of scope for a black-box agent scanner. See the framework-coverage matrix for the exact set.
• CSA Agentic AI Red Teaming Guide (Huang et al., 2025-05-28, all 12 categories)

It is deterministic in stub mode (no LLM key required), reproducible by seed, and emits SARIF + PDF + HTML + JSON.

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Install

pip install agent-guardian

Requires Python 3.10+. Apache-2.0 licensed.

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How it compares

Tool	Multi-agent swarm	Agentic-AI focus	Standards alignment	License
PyRIT	no	no	PyRIT risk taxonomy	MIT
garak	no	no	own taxonomy	Apache-2.0
Promptfoo	no	no	OWASP LLM Top 10 + ATLAS + EU AI Act	MIT
Inspect	no	no	own taxonomy	MIT
DeepTeam	no	no	OWASP LLM Top 10	Apache-2.0
AgentGuardian	yes	yes	OWASP ASI 2026 + MITRE ATLAS v5.4.0 + CSA	Apache-2.0

Coverage by OWASP ASI 2026 category

All 96 attack probes are distributed across the ten OWASP ASI 2026 categories below. Each finding is triple-tagged with its ASI, MITRE ATLAS, and CSA Agentic-RT identifiers.

• ASI01 — Memory Poisoning
• ASI02 — Tool Misuse
• ASI03 — Privilege Compromise
• ASI04 — Supply Chain
• ASI05 — Code Execution
• ASI06 — Intent Breaking & Goal Manipulation
• ASI07 — Agent-to-Agent Compromise
• ASI08 — Cascading Failures
• ASI09 — Trust Exploitation
• ASI10 — Rogue Agents (drift)

Enumerate locally with agent-guardian list-probes; full catalogue at agentguardian.io/attacks/overview.

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60-second quickstart

# 1. Sanity check the install (no API key, no network)
agent-guardian doctor

# 2. List the 96 shipped probes
agent-guardian list-probes

# 3. Run an offline scan against the built-in stub target
agent-guardian scan --target stub --mode fast --llm stub

# 4. Open the HTML report
open reports/latest/report.html

Stub mode requires no LLM API key, no network, no environment variables — it uses canned deterministic responses so you can verify the toolchain end-to-end before pointing it at a real target.

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Scan a real agent

# Against an HTTP endpoint (any framework, any language)
agent-guardian scan \
  --target http://localhost:8000/chat \
  --framework http \
  --mode smart \
  --llm openai \
  --fail-under 80

# Against a LangGraph app
agent-guardian scan \
  --target ./my_graph.py:graph \
  --framework langgraph \
  --mode full

Exit code is non-zero if the posture score falls below --fail-under, so the same command works inside CI.

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Scan modes

Mode	What it runs	Typical wall time
fast	High-signal probe subset, single attacker per family	~2 min
smart	Curated coverage with adaptive attacker selection	~10 min
full	Every probe, every applicable attacker, full mutation set	30+ min

Default mode is full. Pick fast for pre-commit / PR checks, smart for nightly runs.

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Framework adapters

Shipped first-class adapters (pluggable via --framework):

• langgraph — LangGraph state graphs
• crewai — CrewAI crews
• openai-agents — OpenAI Agents SDK
• autogen — Microsoft AutoGen
• adk — Google ADK
• strands — AWS Strands
• http — any HTTP/JSON endpoint (works for FastAPI, Flask, Express, anything)

MCP servers and RAG pipelines are covered via the http adapter and worked examples under examples/ (examples/mcp_server, examples/rag_app, examples/fastapi_chatbot).

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Attacker swarm

The core swarm contains 11 attacker agents, each scoped to a distinct family of agent-stack failure modes:

Agent	Targets
recon-agent	Surface mapping, tool discovery
goal-hijack-agent	Goal redirection, system-prompt override
tool-abuse-agent	Tool misuse, argument injection
privilege-agent	Privilege escalation, role confusion
supply-chain-agent	Tool/model/data supply-chain attacks
code-exec-agent	Sandbox escape, code execution
memory-poison-agent	Long-term memory poisoning
a2a-agent	Agent-to-agent trust exploits
cascade-agent	Cascading hallucination / cross-agent contagion
trust-exploit-agent	Operator/system trust boundary abuse
drift-agent	Behavioural drift, policy erosion over conversation

Additional specialist classes (FuzzingAgent, OutputHandlingAgent, DenialOfWalletAgent, DetectionEvasionAgent, SecretExtractionAgent, IdentityLeakAgent, CriticAgent) ship as building blocks for custom swarms and are documented under agentguardian.io/attackers.

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Reports & evidence

Every scan produces a timestamped bundle under reports/<run-id>/:

• report.html — interactive dashboard, drillable per-probe
• report.pdf — print-ready evidence (ReportLab)
• report.sarif — SARIF 2.1.0 for GitHub Code Scanning / Defender / Snyk ingest
• report.json — full machine-readable record
• evidence/ — per-probe transcripts, prompts, responses, and verdicts

A sample HTML report lives at docs/_assets/sample-report.html.

Signing: the sign_evidence config flag is wired but Sigstore-backed signing of the evidence bundle is planned, not shipped in 1.0.0. Until then the bundle ships unsigned; the SARIF / JSON / PDF are deterministic and hash-stable for external signing.

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Local dashboard

agent-guardian serve
# → http://localhost:7474

Browse historical runs, diff posture scores across releases, and download evidence bundles.

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CI integration

# .github/workflows/agent-guardian.yml
- uses: actions/setup-python@v5
  with: { python-version: '3.11' }
- run: pip install agent-guardian
- run: agent-guardian scan --target ./agent.py:app --mode smart --fail-under 80 --output sarif
- uses: github/codeql-action/upload-sarif@v3
  with: { sarif_file: reports/latest/report.sarif }

Worked examples under examples/ci/.

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Privacy & telemetry

No telemetry is collected. TelemetryConfig.enabled defaults to False. There is no phone-home, no analytics ping, no install tracker. Stub mode additionally requires no network access at all.

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Standards mappings

Each probe is tagged with its ASI category, ATLAS technique, and CSA category. Run:

agent-guardian list-probes --by-standard owasp-asi
agent-guardian list-probes --by-standard mitre-atlas
agent-guardian list-probes --by-standard csa-agentic-rt

The honest, auto-generated coverage table lives at docs/reference/framework-coverage-matrix.md — it lists every ATLAS technique the shipped corpus actually cites, and marks zero-coverage CSA categories explicitly rather than hiding them. Full mapping tables also at agentguardian.io/standards.

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Docs

• Quickstart: agentguardian.io/quickstart
• Attack catalogue: agentguardian.io/attacks/overview
• Adapter guides: agentguardian.io/adapters
• CLI reference: agentguardian.io/cli

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Project status

AgentGuardian 1.0.0 is the first stable release. Semver applies to: the public Python API, the CLI surface, the SARIF / JSON report schemas, and the probe IDs. Probe content (prompts, scoring) may evolve within a minor version.

See ROADMAP.md for what is next, CHANGELOG.md for what shipped, and governance.md for how decisions are made.

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Contributing

We welcome new probes, new adapters, and new attacker classes. Start with CONTRIBUTING.md and the good first issue label.

All commits must be DCO-signed (git commit -s). The pre-commit hook will block unsigned commits.

By participating you agree to the Code of Conduct and the Ethics Policy — AgentGuardian is for testing systems you own or are authorised to test.

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Security

To report a vulnerability, see SECURITY.md. Please do not open public issues for security reports.

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License

Apache-2.0. See LICENSE and NOTICE.

AgentGuardian is a trademark of Glacien Technologies — see TRADEMARKS.md for usage guidelines.