llama-stack-provider-trustyai-garak 0.4.0

Out-Of-Tree Llama Stack provider for Garak Red-teaming

TrustyAI Garak: LLM Red Teaming for Llama Stack

Automated vulnerability scanning and red teaming for Large Language Models using Garak. This project implements garak as an external evaluation provider for Llama Stack.

What It Does

• 🔍 Vulnerability Assessment: Red Team LLMs for prompt injection, jailbreaks, toxicity, bias and other vulnerabilities
• 📋 Compliance: OWASP LLM Top 10, AVID taxonomy benchmarks
• 🛡️ Shield Testing: Measure guardrail effectiveness
• ☁️ Cloud-Native: Runs on OpenShift AI / Kubernetes
• 📊 Detailed Reports: JSON and HTML reports

Pick Your Deployment

Mode	Llama Stack server	Garak scans	Typical use case	Guide
Total Remote	OpenShift/Kubernetes	KFP pipelines	Production	→ Setup
Partial Remote	Local machine	KFP pipelines	Development	→ Setup
Total Inline	Local machine	Local machine	Fast local testing	→ Setup

• Feature notebook: demos/guide.ipynb
• Metadata reference: BENCHMARK_METADATA_REFERENCE.md

Installation

# For Deployment 1 (Total remote)
## no installation needed! 

# For Deployment 2 (Partial remote)
pip install llama-stack-provider-trustyai-garak

# For Deployment 3 (local scans) - requires extra
pip install "llama-stack-provider-trustyai-garak[inline]"

Quick Workflow

from llama_stack_client import LlamaStackClient

client = LlamaStackClient(base_url="http://localhost:8321")

# Discover Garak provider
garak_provider = next(
    p for p in client.providers.list()
    if p.provider_type.endswith("trustyai_garak")
)
garak_provider_id = garak_provider.provider_id

# List predefined benchmarks
benchmarks = client.alpha.benchmarks.list()
print([b.identifier for b in benchmarks if b.identifier.startswith("trustyai_garak::")])

# Run a predefined benchmark
benchmark_id = "trustyai_garak::quick"
job = client.alpha.eval.run_eval(
    benchmark_id=benchmark_id,
    benchmark_config={
        "eval_candidate": {
            "type": "model",
            "model": "your-model-id",
            "sampling_params": {"max_tokens": 100},
        }
    },
)

# Poll status
status = client.alpha.eval.jobs.status(job_id=job.job_id, benchmark_id=benchmark_id)
print(status.status)

# Retrieve final result
if status.status == "completed":
    job_result = client.alpha.eval.jobs.retrieve(job_id=job.job_id, benchmark_id=benchmark_id)

Custom Benchmark Schema

Use metadata.garak_config for Garak command configuration. Provider-level runtime parameters (for example timeout, shield_ids) stay at top-level metadata.

client.alpha.benchmarks.register(
    benchmark_id="custom_promptinject",
    dataset_id="garak",
    scoring_functions=["garak_scoring"],
    provider_id=garak_provider_id,
    provider_benchmark_id="custom_promptinject",
    metadata={
        "garak_config": {
            "plugins": {
                "probe_spec": ["promptinject"]
            },
            "reporting": {
                "taxonomy": "owasp"
            }
        },
        "timeout": 900
    }
)

Update and Deep-Merge Behavior

• To create a tuned variant of a predefined (or existing custom) benchmark, set provider_benchmark_id to the predefined (or existing custom) benchmark ID and pass overrides in metadata.
• Provider metadata is deep-merged, so you can override only the parts you care about.
• Predefined benchmarks are comprehensive by design. For faster exploratory runs, lower garak_config.run.soft_probe_prompt_cap to reduce prompts per probe.

client.alpha.benchmarks.register(
    benchmark_id="quick_promptinject_tuned",
    dataset_id="garak",
    scoring_functions=["garak_scoring"],
    provider_id=garak_provider_id,
    provider_benchmark_id="trustyai_garak::quick",
    metadata={
        "garak_config": {
            "plugins": {"probe_spec": ["promptinject"]},
            "system": {"parallel_attempts": 20}
        },
        "timeout": 1200
    }
)

# Faster (less comprehensive) variant of a predefined benchmark
client.alpha.benchmarks.register(
    benchmark_id="owasp_fast",
    dataset_id="garak",
    scoring_functions=["garak_scoring"],
    provider_id=garak_provider_id,
    provider_benchmark_id="trustyai_garak::owasp_llm_top10",
    metadata={
        "garak_config": {
            "run": {"soft_probe_prompt_cap": 100}
        }
    }
)

Shield Testing

Use either shield_ids (all treated as input shields) or shield_config (explicit input/output mapping).

client.alpha.benchmarks.register(
    benchmark_id="with_shields",
    dataset_id="garak",
    scoring_functions=["garak_scoring"],
    provider_id=garak_provider_id,
    provider_benchmark_id="with_shields",
    metadata={
        "garak_config": {
            "plugins": {"probe_spec": ["promptinject.HijackHateHumans"]}
        },
        "shield_config": {
            "input": ["Prompt-Guard-86M"],
            "output": ["Llama-Guard-3-8B"]
        },
        "timeout": 600
    }
)

Understanding Results (_overall and TBSA)

job_result.scores contains:

• probe-level entries (for example promptinject.HijackHateHumans)
• synthetic _overall aggregate entry across all probes

_overall.aggregated_results can include:

• total_attempts
• vulnerable_responses
• attack_success_rate
• probe_count
• tbsa (Tier-Based Security Aggregate, 1.0 to 5.0, higher is better)
• version_probe_hash
• probe_detector_pairs_contributing

TBSA is derived from probe:detector pass-rate and z-score DEFCON grades with tier-aware aggregation and weighting, to give a more meaningful overall security posture than a plain pass/fail metric.

Scan Artifacts

Access scan files from job metadata:

• scan.log
• scan.report.jsonl
• scan.hitlog.jsonl
• scan.avid.jsonl
• scan.report.html

Remote mode stores prefixed keys in metadata (for example {job_id}_scan.report.html).

Notes on Remote Cluster Resources

• Partial remote mode needs KFP resources only.
• Total remote mode needs full stack resources (KFP, LlamaStackDistribution, RBAC, secrets, and Postgres manifests).
• See lsd_remote/ for full reference manifests.

Support & Documentation

• 📚 Tutorial: https://trustyai.org/docs/main/red-teaming-introduction
• 💬 Issues: https://github.com/trustyai-explainability/llama-stack-provider-trustyai-garak/issues
• 🦙 Llama Stack Docs: https://llamastack.github.io/
• 📖 Garak Docs: https://reference.garak.ai/en/latest/index.html