Zentric Protocol

@ZentricProtocol

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16 days ago

Prompt injection and PII detection MCP server for AI agents. Deterministic, sub-25ms. Returns CLEARED/ANONYMIZED/BLOCKED verdict with matched signatures, PII entities, and GDPR Art.30 audit report. 2,000 free requests/month.

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Overview

ZENTRIC PROTOCOL

PII Integrity · Deterministic Infrastructure · Secure Protocol

The protocol layer between intent and execution in AI systems.
Every signal examined. Every verdict signed. Nothing passes without record.

→ Request Access · Documentation · Integrity Report v1.0

Repository Scope & Commercial License

This repository exists for transparency and contribution — not as a deployable alternative to the hosted service.

What's in this repo	What's not in this repo
Authentication middleware (`/middleware`)	IntegrityGuard detection engine
Stripe webhook handler (`/api/webhooks`)	PrivacyGuard NLP classification layer
Supabase schema & migrations (`/supabase`)	Signature database (22 injection vectors)
API interface contracts & response shapes	Model weights and training data
Landing page & documentation (`index.html`)	Audit record signing infrastructure

Cloning this repository does not give you access to the Zentric processing service. The detection engine that inspects prompts, detects PII, and generates signed audit reports runs on Zentric's infrastructure and requires an active license.

Why publish the middleware?

Because trust is infrastructure. You should be able to verify how authentication works, how your API key is validated, and how subscription state is checked before your requests reach the engine. We believe in auditability at every layer — including our own enforcement code.

Contributions welcome

We accept contributions to the middleware, webhook handler, and Supabase schema. Open a PR or file an issue. For security-related contributions, see the Security section.

Getting access

Tier	Price	Requests	Start
Free	Free	10,000/mo	Get API key →
Indie	$29/mo	25,000/mo	See pricing →
Team	$99/mo	100,000/mo	See pricing →
Scale	$499/mo	500,000/mo	See pricing →
Enterprise	Custom	Unlimited	Contact →

What is Zentric Protocol?

Zentric Protocol is an infrastructure integrity layer for AI systems. It sits between your application and your LLM, examining every signal — prompts, responses, user inputs — and returning a cryptographically-signed verdict before execution continues.

It is not a filter. It does not guess. It applies deterministic rules across a standardized pipeline and returns a structured, auditable JSON report for every request.

Input Signal
     │
     ▼
┌─────────────────────────────────────────┐
│           ZENTRIC PROTOCOL              │
│                                         │
│  ┌─────────────┐  ┌─────────────────┐  │
│  │IntegrityGuard│→│  PrivacyGuard   │  │
│  │ 22 injection │  │  17 PII types   │  │
│  │  signatures  │  │  7 languages    │  │
│  └─────────────┘  └────────┬────────┘  │
│                             ▼           │
│                    ┌──────────────┐     │
│                    │ ZentricReport│     │
│                    │ UUID+SHA-256 │     │
│                    │  GDPR Art.30 │     │
│                    └──────────────┘     │
└─────────────────────────────────────────┘
     │
     ▼
Verdict + Certificate → Your System

Performance Benchmark

Extracted from Zentric Integrity Report v1.0 — 1,000,000 simulations across all supported attack vectors and entity types.

Attack Vector	Simulations	Detected	Precision
Prompt Injection (EN)	187,430	187,012	99.78%
Prompt Injection (ES/FR/DE)	134,210	133,401	99.40%
Base64 / Token Smuggling	48,900	48,761	99.72%
Jailbreak multi-vector	67,340	66,988	99.48%
Fake SYSTEM override	39,120	39,087	99.92%
Role redefinition	52,000	51,743	99.51%
Total	529,000	528,992	99.62%

Full methodology and raw data available on request: core@zentricprotocol.com

Benchmark Methodology

The 1,000,000-simulation corpus was constructed from four sources: (1) published prompt injection research datasets (PINT Benchmark, PromptBench, garak); (2) adversarial samples hand-authored across 22 attack categories to stress-test edge cases not present in public datasets; (3) synthetically mutated variants of known attack patterns — character substitution, whitespace injection, Unicode normalization attacks, and mixed-language payloads — to measure robustness against obfuscation; and (4) benign control samples drawn from production-representative traffic to verify precision does not degrade under normal use. The final split is approximately 53% attack samples and 47% benign controls. Simulations were run deterministically: the same corpus against a frozen signature set, with no retraining or tuning between runs.

What this benchmark does not cover: adversarial inputs specifically constructed to defeat these 22 signatures after reading this repository (signatures are partially public, which is a known trade-off of transparency); semantic prompt injections that do not match any current signature pattern and rely entirely on model misinterpretation; non-English languages beyond the seven supported (EN, ES, FR, DE, IT, PT, NL); and multi-turn conversation-level attacks where the injection is distributed across several messages. The precision figures above reflect deterministic pattern matching — not an ML classifier, not a generalization claim. Zentric is honest about what it detects and what it does not.

The Three Modules

01 · IntegrityGuard

Detects prompt injection, jailbreak attempts, and instruction overrides before they reach your LLM.

22 catalogued injection signatures
7 supported languages (EN, ES, FR, DE, IT, PT, NL)
Multilingual NLP classification layer
Mean server-side processing: 23.4ms (network latency not included)

02 · PrivacyGuard

Identifies and anonymizes PII in prompts and responses. Regional standards treated as first-class entities.

17 PII entity types: SSN, NIF, CPF, CURP, IBAN, SWIFT, passport, email, phone, and more
Regional pattern recognition (EU, US, LATAM)
Anonymization operators: redact, mask, tokenize, pseudonymize
Recall rate: 99.71% across 17 entity types

03 · ZentricReport

Every request that passes through the protocol generates a signed, immutable audit record.

{
  "report_id": "zp_01HXYZ...",
  "uuid": "f47ac10b-58cc-4372-a567-0e02b2c3d479",
  "timestamp_utc": "2026-05-14T22:00:00.000Z",
  "sha256": "e3b0c44298fc1c149afb...",
  "verdict": "CLEARED",
  "integrity": {
    "injection_detected": false,
    "signatures_matched": [],
    "confidence": 0.9998
  },
  "privacy": {
    "pii_detected": true,
    "entities": [
      { "type": "EMAIL", "action": "REDACTED", "position": [42, 61] }
    ]
  },
  "compliance": {
    "gdpr_art30": true,
    "ccpa": true,
    "eu_ai_act_s52": true
  },
  "latency_ms": 21.4
}

API Reference

Authentication

curl -X POST https://api.zentricprotocol.com/v1/analyze \
  -H "Authorization: Bearer zp_live_..." \
  -H "Content-Type: application/json" \
  -d '{
    "input": "Your prompt or user input here",
    "modules": ["integrity", "privacy"],
    "options": {
      "anonymize": true,
      "language": "auto"
    }
  }'

Response

{
  "status": "ok",
  "verdict": "CLEARED",
  "report": { ... },
  "anonymized_input": "Your prompt or user input here",
  "latency_ms": 23.1
}

Verdict States

Verdict	Description
`CLEARED`	Input passed all checks. Safe to forward to LLM.
`BLOCKED`	Injection or high-risk pattern detected. Reject.
`ANONYMIZED`	PII found and redacted. Anonymized input returned.
`REVIEW`	Low-confidence detection. Human review recommended.

SDKs

Language	Status
Python	`pip install zentricprotocol` (coming Q3 2026)
Node.js	`npm install @zentricprotocol/sdk` (coming Q3 2026)
REST API	Available now

Compliance Coverage

Zentric Protocol is designed from the ground up for regulated AI deployments.

Standard	Coverage
GDPR Art. 30	Reproducible audit record per request — one component of an Art.30 documentation strategy
GDPR Art. 25	Privacy by design — anonymization as default
CCPA §1798.100	Consumer data identification and processing record
EU AI Act §52	Transparency obligations resolved at infrastructure level
SOC 2 Type II	Audit trail and access controls (in progress)

Pricing

Tier	Price	Requests	Use Case
Free	Free	10,000/mo	Test the protocol end-to-end, no credit card
Indie	$29/mo	25,000/mo	Solo developers shipping their first AI feature
Team	$99/mo	100,000/mo	Small teams running AI in production
Scale	$499/mo	500,000/mo	High-volume pipelines and multi-agent systems
Enterprise	Custom	Unlimited	Regulated industries, EU data residency, dedicated SLA

→ See plans · → Get API key · → Contact for Enterprise

Architecture Principles

Deterministic. The same input always produces the same verdict. No probabilistic black boxes in the critical path.

Stateless. The protocol does not store your data. Each request is processed and returned. The audit record is yours.

Composable. Deploy the full stack, a single guard, or wire only the audit layer into existing infrastructure.

Auditable. Every verdict is signed with SHA-256, timestamped in UTC, and assigned a UUID. Your compliance team will thank you.

Security

We take the security of this protocol seriously. If you discover a vulnerability, please report it responsibly.

Email: core@zentricprotocol.com
Subject: [SECURITY] <brief description>
Response SLA: 48 hours acknowledgement, 7 days resolution target

We do not operate a public bug bounty program at this time. Responsible disclosure is acknowledged in our changelog.

Roadmap

Contact

Channel
General	core@zentricprotocol.com
Enterprise	core@zentricprotocol.com
Security	core@zentricprotocol.com
X / Twitter	@ZentricProtocol
LinkedIn	Zentric Protocol

Zentric Protocol · Infrastructure Integrity for the AI Era

Built for CTOs who know that trust is infrastructure, not a feature.

Try in Playground

Server Config

{
  "mcpServers": {
    "zentric": {
      "command": "npx",
      "args": [
        "-y",
        "zentric-protocol-mcp"
      ],
      "env": {
        "ZENTRIC_API_KEY": "<YOUR_API_KEY>"
      }
    }
  }
}

Build with ShipAny.