SovereignShield
SovereignShield

Immutable Firewall
as a Service

Deterministic, sub-millisecond security scanning for AI agents and LLM applications. Blocks prompt injection, shell execution, credential exfiltration, and 50+ attack patterns before they execute.

Get Started Free See How It Works
<1ms Scan latency
50+ Attack patterns
0 Dependencies
100% Deterministic

Why SovereignShield

Every AI agent needs a security layer. Most rely on probabilistic filters that miss attacks. We don't.

Sub-Millisecond

Pure pattern matching and rule evaluation. No LLM calls in the critical path. Your users won't feel a thing.

Deterministic

Same input, same result, every time. No hallucinations, no probability scores, no "maybe safe." Our engine relies entirely on predictable, mathematical rule evaluation.

Always Up-to-Date

Our security research team constantly monitors new AI attack vectors and pushes advanced mitigation rules instantly. No code updates required.

Immutable Core

Security payloads are strictly enforced using frozen dataclass namespaces. Runtime modification is physically impossible, ensuring downstream code can never tamper with or bypass a BLOCK decision.

Zero Friction

Integrate Sovereign Shield into your pipeline with just 3 lines of code. Whether using the official Python SDK or raw HTTP, your agent is secured instantly.

Comprehensive Coverage

Designed specifically to mitigate the OWASP Top 10 vulnerabilities for Large Language Model Applications, including prompt injection and data exfiltration.

4-Layer Defense Architecture

Every request passes through four independent security layers in sequence. Each layer can block independently.

1

InputFilter

Pattern-based sanitization. Catches prompt injection, jailbreak attempts, encoded payloads, and social engineering across 50+ signals. Consistently updated category keywords mitigate the latest zero-day exploits.

Sub-millisecond
↓
2

Firewall

Automatically enforced per-user and per-tier rate limiting. Prevents abuse floods and DDoS-style prompt attacks.

Identity + Rate
↓
3

CoreSafety

Action-level audit: shell execution ban, file deletion ban, URL restrictions, credential exfiltration detection, malware syntax scanning, data poisoning detection, code leak prevention. 13 checks total.

Immutable Laws
↓
4

Conscience

Ethical evaluation layer. Detects deception, manipulation, harm intent, fake tool injection, security evasion, and IP extraction attempts.

Ethical Gate

What It Blocks

Real attack categories detected and stopped in production.

✗ Prompt injection (IGNORE PREVIOUS, role hijacking)
✗ Jailbreak attempts (DAN, developer mode)
✗ Shell execution (os.system, subprocess, rm -rf)
✗ Credential exfiltration (API keys in URLs)
✗ Code leak / IP theft (system prompt extraction)
✗ SQL injection (UNION SELECT, DROP TABLE)
✗ XSS payloads (<script>, document.cookie)
✗ Reverse shells (nc -e, pty.spawn)
✗ File deletion and self-modification
✗ Path traversal (../../../etc/passwd)
✗ Encoded payloads (base64, hex, unicode obfuscation)
✗ Denial of Service (regex bombs, massive payloads)

Pricing

Start free. Scale when you need to.

Monthly Yearly Save $16
Free
$0/mo
  • 1,000 scans/month
  • 100 scans/day
  • 30 req/min rate limit
  • All 4 security layers
  • Automatic rule updates
  • Python client library
Most Popular
Pro
$8/mo
  • 100,000 scans/month
  • 10,000 scans/day
  • 300 req/min rate limit
  • All 4 security layers
  • Automatic rule updates
  • Python client library
Enterprise
Custom
  • Custom scan volume
  • Custom daily limits
  • Custom rate limits
  • All 4 security layers
  • Automatic rule updates
  • Dedicated support
Contact Us

Lost your API key?

Integrate in 3 Lines

One API call between your user and your AI. Dangerous input never gets through.

1

Sign up

Pick a plan above. Verify your card via Stripe. Get your API key instantly.

2

Send input to the shield

Every user message passes through 4 security layers before it reaches your AI.

3

Safe input passes through

Clean input is returned. Dangerous input is blocked silently. Your AI never sees it.

terminal 
$ pip install sovereign-shield-client
python 
from sovereign_shield_client import SovereignShield

shield = SovereignShield(api_key="ss_your_key")

# Your user's input goes in, safe input comes back
safe_input = shield.scan(user_message)

# Pass it straight to your LLM — dangerous input never gets here
response = your_llm.generate(safe_input)
cURL (Raw HTTP) 
$ curl -X POST https://api.sovereign-shield.net/api/v1/scan \
  -H "Authorization: Bearer ss_your_key" \
  -H "Content-Type: application/json" \
  -d '{"prompt": "user message here"}'