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Open Source · MIT License · v1.5.1

Your First Line of Defense for AI Output

Install in seconds. Verify locally. Upgrade when you need more.

Local-first LLM security verification. Prompt injection detection, PII redaction, hallucination risk scoring, and runtime I/O verification. Zero telemetry.

npm install llmverify
18 Security Engines
Zero Network Requests
OWASP LLM Top 10

Part of the HAIEC AI governance platform

Try the live demo ↓

Interactive Demo

0 characters

How to use this demo:

  1. Select an attack example from the dropdown or enter your own prompt
  2. Click "Run Verification" or press Ctrl+Enter
  3. See the before/after comparison and detection details
  4. Notice the network request count stays at 0 (all processing is local)

Risk Level Guide:

🔴

CRITICAL

Immediate security threat - Block immediately

🟠

HIGH

Significant vulnerability - High priority

🟡

MODERATE

Potential risk - Monitor closely

🟢

LOW

Minimal concern - Safe to proceed

Why LLMverify?

Lightweight

Bundle Size

Minimal footprint

Tested

Security

Comprehensive suite

Zero

Privacy

Telemetry & tracking

Stable

Quality

Production ready

Pattern-Based

Detection

Known attack patterns

0

Network Calls

Verify yourself

Add LLM Security to Your App

Install llmverify and start protecting your users in minutes

$ npm install llmverify

Quick Start:

import { isInputSafe, verify } from 'llmverify';

// Simple check
const safe = isInputSafe(userPrompt);

// Detailed verification
const result = await verify(userPrompt);
console.log(result.risk.level); // 'low', 'moderate', 'high', 'critical'

✅ TypeScript Support

Full type definitions included

✅ Framework Agnostic

Works with React, Vue, Svelte, etc.

✅ Minimal Dependencies

4 lightweight runtime packages