sentinel-kernel 3.0.2

EU-sovereign decision record layer for AI agents.

sentinel-kernel

AI decisions. Recorded. Sovereign. Auditable.

Every AI agent makes decisions. From 2 August 2026, EU high-risk AI systems must prove it — automatically, tamper-resistantly, under EU law. Sentinel makes that possible in five minutes, with zero cloud dependencies, in any environment including air-gapped.

Live preview: https://sebastianweiss83.github.io/sentinel-kernel/ Get started in 2 minutes: docs/getting-started.md

Quick demo

pip install sentinel-kernel
sentinel demo  # 50 decisions, kill switch, compliance check, report

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Quick demo — full stack in one command

git clone https://github.com/sebastianweiss83/sentinel-kernel
cd sentinel-kernel/demo
docker compose up --build

Then open http://localhost:3001 (Grafana, admin / sentinel).

The demo runs a realistic EU defence contractor scenario — policy evaluation, kill switch (Art. 14), document analysis, sovereignty scan — and streams live traces to Grafana. See demo/README.md for what to look at.

Install

pip install sentinel-kernel

Five minutes to your first sovereign trace

from sentinel import Sentinel

sentinel = Sentinel()  # local storage, zero config, no network

@sentinel.trace
async def approve_request(payload: dict) -> dict:
    # your existing agent logic — unchanged
    return await your_agent.run(payload)

result = await approve_request({"action": "approve", "amount": 50000})

That's it. Every call now produces a tamper-resistant decision record:

{
  "trace_id": "01hx7k9m2n3p4q5r6s7t8u9v0w",
  "timestamp": "2026-04-01T14:23:41.234Z",
  "agent": "approve_request",
  "model": "mistral/large-2",
  "policy_result": "ALLOW",
  "inputs_hash": "sha256:a3f8c2d19e4b67f0c1a5d8e2b9c3f4a7",
  "output": {"decision": "approved"},
  "sovereign_scope": "EU",
  "data_residency": "local",
  "schema_version": "1.0.0"
}

Stored locally. No cloud account. No API key. No network call.

---

With policy evaluation

from sentinel import Sentinel, DataResidency
from sentinel.policy import SimpleRuleEvaluator
from sentinel.storage import FilesystemStorage

def within_threshold(ctx: dict) -> tuple[bool, str | None]:
    if ctx.get("amount", 0) > ctx.get("agent_threshold", 0):
        return False, "amount_exceeds_threshold"
    return True, None

# works fully offline — classified environments, air-gapped networks
sentinel = Sentinel(
    storage=FilesystemStorage("/mnt/traces"),
    policy_evaluator=SimpleRuleEvaluator({
        "policies/procurement.py": within_threshold,
    }),
    sovereign_scope="EU",
    data_residency=DataResidency.EU_DE,
)

@sentinel.trace(policy="policies/procurement.py")
async def evaluate_procurement(ctx: dict) -> dict:
    return await agent.run(ctx)

For OPA/Rego policies:

from sentinel import Sentinel
from sentinel.policy import LocalRegoEvaluator

sentinel = Sentinel(
    policy_evaluator=LocalRegoEvaluator(opa_binary="opa"),
    # OPA runs in-process — no network, no OPA server
)

@sentinel.trace(policy="policies/procurement.rego")
async def evaluate_procurement(ctx: dict) -> dict:
    return await agent.run(ctx)

---

What Sentinel does. What it doesn't.

	Sentinel	LLM observability tools	Proprietary AI platforms
Sovereign decision records	✓	—	Vendor-jurisdicted
In-process policy evaluation	✓	—	—
Air-gapped operation	✓	—	—
BSI IT-Grundschutz path	✓	—	—
EU AI Act Art. 12 compliance	✓	—	Partial
Zero hard dependencies	✓	—	—
Apache 2.0 permanently	✓	Varies	—
US CLOUD Act exposure	None	Varies	Unconditional

Sentinel is not an observability tool. It is not a content filter. It does not replace your LLM or your agent framework. It wraps them — and produces a legally-valid, portable, sovereign record of every decision they make.

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Deployment

Local / development

sentinel = Sentinel()  # SQLite, no config

On-premise enterprise

from sentinel import Sentinel, DataResidency
from sentinel.storage import SQLiteStorage

sentinel = Sentinel(
    storage=SQLiteStorage("/var/lib/sentinel/traces.db"),
    sovereign_scope="EU",
    data_residency=DataResidency.EU_DE,
)
# PostgreSQL storage planned for v0.2

Air-gapped / classified

from sentinel import Sentinel, DataResidency
from sentinel.storage import FilesystemStorage

sentinel = Sentinel(
    storage=FilesystemStorage("/mnt/traces"),
    data_residency=DataResidency.AIR_GAPPED,
)
# zero network connectivity required
# traces written as NDJSON, one file per day

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Why sovereignty matters

The US CLOUD Act (18 U.S.C. § 2713) requires US-incorporated companies to produce data stored anywhere in the world on valid legal process. This applies to EU data centres operated by US companies. No contract eliminates it.

EU AI Act Article 12 mandates automatic, tamper-resistant logging for high-risk AI systems from 2 August 2026. Decision logs that are simultaneously accessible to US authorities do not satisfy this requirement from EU jurisdiction.

Sentinel's critical path — interceptor, policy evaluation, trace emission, storage — contains no US-owned components. This is architectural. Not a configuration option.

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Roadmap

Version	Status	Milestone
v0.1	✓ shipped	Kernel, in-process policy eval, SQLite + Filesystem storage
v0.1.1	✓ shipped	Kill switch (EU AI Act Art. 14 halt mechanism)
v0.2	✓ shipped	PostgreSQL storage backend (optional extra)
v0.3	✓ shipped	LangChain callback handler + OpenTelemetry export + LangFuse enrichment
v0.4	✓ shipped	Air-gapped validation suite with network blocking
v0.5	✓ shipped	Sovereignty scanner (runtime, CI/CD, infrastructure)
v0.6	✓ shipped	Manifesto-as-code (SentinelManifesto)
v0.7	✓ shipped	EU AI Act compliance checker + diff report
v0.8	✓ shipped	Demo environment (Docker Compose + Grafana dashboard)
v0.9	✓ shipped	Sovereignty dashboard (terminal + self-contained HTML)
v1.0	✓ shipped	Core production baseline
v1.5	✓ shipped	Compliance checkers (EU AI Act, DORA, NIS2)
v2.0	✓ shipped	Production stable, BSI assessment ready
v2.1	✓ shipped	BudgetTracker, attestations, CrewAI, AutoGen
v2.2	✓ shipped	Quantum-safe signing (ML-DSA-65, client-side)
v2.3	✓ shipped	LangFuse sovereignty panel
v2.4	✓ shipped	Rust RFC-001 implementation
v3.0	Q3 2026	BSI assessment submission + LF Europe application
v3.1	Q1 2027	VS-NfD classified deployment profile

What's in v0.9

v0.9 ships the complete sovereignty platform: the decision record kernel (v0.1–v0.4) plus everything a regulated team needs to evaluate, declare, and verify sovereignty end-to-end.

• sentinel scan — runtime, CI/CD, and infrastructure scanners that classify every dependency by parent company and jurisdiction.
• SentinelManifesto — declare sovereignty requirements as a Python class; run it against reality; get a structured report with gaps, acknowledged gaps, and migration plans.
• EUAIActChecker — automated EU AI Act compliance check with honest gap reporting. Distinguishes machine-checkable articles (12, 13, 14, 17) from organisational obligations (10, 11, 15).
• sentinel report — generate a self-contained HTML sovereignty report suitable for regulatory review. No CDN, no external resources — air-gapped safe by construction.
• sentinel dashboard — live terminal dashboard showing decision traces, policy results, sovereignty score, and kill switch state. Zero dependencies.
• Demo package — demo/ with Docker Compose (OTel collector, Prometheus, Grafana, self-hosted LangFuse) running three realistic industry scenarios end-to-end.
• RFC-001 — SovereigntyManifest specification, the first step toward a cross-project standard.

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EU AI Act compliance

Article	Requirement	Sentinel
Art. 9	Risk management	Policy eval recorded in every trace
Art. 12	Automatic tamper-resistant logging	Every decision produces a trace automatically
Art. 13	Transparency to deployers	Policy name, version, result in every trace
Art. 14	Human oversight + kill switch	Override mechanism → linked immutable trace
Art. 17	Quality management	Continuous tamper-resistant record

Enforcement for Annex III high-risk AI: 2 August 2026. Penalties up to €15M or 3% of global annual turnover.

Full mapping: docs/eu-ai-act.md

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Architecture

Your AI agents (any framework, any model)
         │
         ▼
  ┌─────────────────────┐
  │   Sentinel Kernel   │  ← wraps any agent call
  │                     │
  │  Interceptor        │  ← captures inputs, timing, context
  │  Policy Evaluator   │  ← in-process: Rego / Python / custom
  │  Trace Serializer   │  ← SHA-256 hashed, schema-versioned
  └──────────┬──────────┘
             │
    ┌────────┼────────┐
    ▼        ▼        ▼
 SQLite  PostgreSQL  Filesystem
                     (NDJSON, air-gapped)

Critical path guarantees:

• Zero hard dependencies
• Zero network calls at runtime
• Zero US CLOUD Act exposure
• Full offline / air-gapped operation

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Contributing

Read CONTRIBUTING.md before opening a PR.

Every integration must document its sovereignty posture. Schema changes require an RFC. Breaking changes to the trace format go through a 14-day comment period.

git clone https://github.com/sebastianweiss83/sentinel-kernel
cd sentinel-kernel
pip install -e ".[dev]"
pytest

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If Sentinel helps you meet EU AI Act requirements, consider giving it a ⭐ on GitHub — it helps others find the project.

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License

Apache 2.0. Full text.

No BSL. No commercial-only features. No relicensing. Ever.

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Governance

Sentinel is pursuing stewardship under Linux Foundation Europe. Until confirmed, the project is maintained independently with all significant decisions made through the RFC process in GitHub Discussions.

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Documentation

• docs/getting-started.md — two-minute quickstart
• docs/real-world-examples.md — industry scenarios
• docs/schema.md — full trace schema reference
• docs/eu-ai-act.md — Article 12/13/14/17 mapping
• docs/integration-guide.md — framework integrations
• docs/sovereignty.md — what sovereignty means
• docs/ecosystem.md — sovereign AI project registry
• docs/rfcs/RFC-001-sovereignty-manifest.md — SovereigntyManifest spec (draft)
• docs/bsi-profile.md — BSI IT-Grundschutz profile
• demo/README.md — Docker Compose demo environment
• examples/ — 13 runnable examples and 5 policy templates
• docs/landscape.md — how Sentinel relates to LLMOps ecosystem
• docs/architecture.md — detailed architecture
• docs/releasing.md — release runbook
• CLAUDE_MEGA_PROMPT.md — persistent Claude Code reference
• VISION.md — strategic vision
• ROADMAP.md — detailed milestones
• GOVERNANCE.md — governance model
• CHANGELOG.md — version history