Prove what your AI does
with your customers' data.
Senthex is the AI firewall between your app and OpenAI, Anthropic, Mistral or Gemini — and the verifiable audit trail that proves what your AI saw and produced. 26 shields. EU-hosted.
Built for teams shipping LLMs to production
Verify it yourself
Most AI-security tools ask you to trust them. Senthex gives you a verifiable record. Below is a real (synthetic) audit bundle — change one byte and watch the cryptographic chain catch it, live in your browser.
Flip the blocked attack's score 0.86 → 0.06 — an insider trying to hide it.
Editable. Nothing proves it wasn't changed.
{ "event": 13, "verdict": "block",
"injection_score": 0.86 }No integrity check — the edit is invisible. “Trust us.”
A SHA-256 hash chain, anchored to an independent timestamp.
External anchor: freeTSA — an independent RFC 3161 timestamp (public demo authority, not eIDAS-qualified), checked by the offline verifier.
| # | Verdict | Injection | row hash |
|---|
100% synthetic data (ACME Talent GmbH). This proves integrity — the records form an unbroken chain that wasn't silently rewritten before the timestamped anchor. It does not prove completeness (a snapshot can omit events) or origin (a signature comes later). Tamper-evident, not tamper-proof. The verifiable audit trail is a pilot capability (v1.1.7), not yet the published release.
One line. That's it.
Change your base_url. Everything else stays the same — your API key, your SDK, your existing code.
Every request is now intercepted, scanned across 26 shields, and logged. Your existing code requires zero changes.
Built for production.
Streaming pass-through. EU-hosted. Data minimisation by default.
line to integrate
swap your base_url — keep your SDK and key
shields per call
input and output — best-effort, not exhaustive
LLM keys stored
your provider key is forwarded in-flight, never persisted
LLM providers
OpenAI · Anthropic · Mistral · Gemini · OpenRouter
Defense in depth, without the complexity.
Universal compatibility
One line. Every provider.
No SDK to install. No refactor required. Swap your base_url to app.senthex.com/v1 and every request — across every provider — goes through Senthex's shield layer. Transparent by design.
Threat detection
Defense in depth.
26 shields run on every request — prompt-injection patterns, PII detection (redacted before the model when you run redact mode), secret-leak and unicode-steganography checks. Pattern-based and best-effort: no filter is exhaustive (OWASP ranks prompt injection LLM01). That's exactly why the real assurance is the verifiable audit trail, not the shield alone.
Observability
See everything. In real time.
Every request is logged, scored, and classified. Threat timeline, anomaly detection, per-project analytics. Export your full audit trail for EU AI Act compliance in one click.
Compliance
Built for the EU AI Act.
Senthex supports record-keeping under Articles 12 & 19: an audit trail, data classification and exportable reports. Data minimisation by default. Hosted in Germany. High-risk obligations were provisionally postponed to December 2027 — but regulated buyers ask you to prove what your AI does well before the law compels it.
Ready
Deadline: August 2, 2026
The independent alternative.
| Senthex | Cloudflare | Lakera | LLM Guard | |
|---|---|---|---|---|
| One-line integration | ||||
| Behavioral fingerprinting | ||||
| Unicode steganography | ||||
| EU AI Act audit trail | ||||
| Canary tokens | ||||
| Multi-turn tracking | ||||
| Self-hosted option | ||||
| Startup-friendly price |
Lakera, Protect AI, Prompt Security — all acquired in 2025. Senthex is the independent, European-built option for startups and scale-ups.
Simple, transparent pricing.
Start on the free tier. No credit card required. Upgrade when you need to.
Free
1,000 requests / month
- [QUOTA À CONFIRMER] requests/month
- All 26 shields
- Real-time dashboard
- 3-day log retention
- Community support
Pro
50,000 requests / month
- [QUOTA À CONFIRMER] requests/month
- All 26 shields
- Real-time dashboard
- 14-day log retention
- Webhook alerts
- CSV export
- Email support
Business
500,000 requests / month
- [QUOTA À CONFIRMER] requests/month
- All 26 shields
- Real-time dashboard
- 90-day log retention
- EU AI Act audit trail
- Webhook + Slack alerts
- Priority support
- OWASP LLM Top 10 report
Self-host
Deploy in your own environment
- Deploy in your own environment — no data leaves
- All 26 shields
- Updates included (security + AI Act)
- Offline audit-trail verifier
- Art. 12 & 19 record-keeping
- Onboarding & deployment support
- Best-effort email support (48–72h)
Ready to secure
your LLM stack?
Start on the free tier. No credit card required.
No credit card required · EU-hosted · GDPR compliant