All-in-One AI Security
LockLLM is a state-of-the-art security gateway that detects prompt injection, hidden instructions, and data-exfiltration attempts in real time. Send prompts to one API and get a clear risk signal with minimal latency.
Keep control of your AI
LockLLM sits in front of your agents and flags risky inputs in real time. Decide what gets through, what gets blocked, and what needs a safer path.
Prompt safety, simplified.
LockLLM turns complex prompt analysis into a simple signal. Scan prompts before they run and get a clear risk score you can use to allow, block, or handle requests safely.
Catches problems early
Most prompt attacks look normal at first. LockLLM helps flag the risky ones before anything unexpected happens.
Privacy by default
LockLLM scans prompts in real time without storing them. We process what’s needed to generate a signal, then move on.
Built for everyone
LockLLM integrates easily into your stack. Add it to existing request flows and deploy without touching your code.
Advanced Coverage
Catches all types of attacks, such as jailbreak and hidden instructions across real-world inputs.
Built-in dashboard
Review scans and risk scores in a simple web UI, no logs or scripts required.
Flexible enforcement
Block risky prompts, warn users, or route requests to safer handling paths based on your needs.
Low overhead
Designed to sit in front of every request without noticeably slowing down your app.
Plug-and-Play
Simple responses you can plug directly into existing request flows.
Free to use
Start protecting your prompts for free designed for real usage.
A complete security ecosystem
LockLLM gives you the tools to stay in control. Deploy via API, SDK, or browser extension without changing your code, and manage everything from a unified dashboard.
Real Results With LockLLM
From developers integrating the API to people testing prompts in the dashboard, LockLLM helps people catch risky prompts before they’re used in production or pasted into an LLM.
Why Teams Trust Us
LockLLM helps teams prevent prompt injection before it reaches their LLMs. With fast scanning and clear signals, it’s easy to protect both experiments and production systems.
Clear Risk Signals
Every scan returns a clear safe or unsafe result with confidence scores, so you know exactly when a prompt is risky.
Model-Driven Detection
LockLLM uses its own dedicated prompt-injection detection model trained on real-life and emerging attack patterns.
Consistent Results
The same prompt always produces the same outcome, making LockLLM safe to use in automated pipelines.
Usage Visibility
See how often prompts are scanned and how large inputs are, helping you understand real usage patterns.
Completely Free
LockLLM is completely free to use, no trials, no credit card. If you like our cause, you can optionally support the project with a donation.
API-First Design
A fast, simple API lets you place LockLLM in front of any AI models or agents with minimal integration effort and setup.
Injection Prevention
Detects jailbreaks, instruction overrides, and role manipulation attempts before they reach your model.
Privacy & Data Security
All data is handled securely. Prompts are processed solely for scanning and are not retained or used for model training.
Low-Latency Scanning
Optimized inference keeps scans fast enough for real-time applications and latency-sensitive user-facing features.
Free and Transparent
LockLLM is free for everyone, with no paywalls or hidden limits. Optional one-time donations help support infrastructure, research, and continued improvements, so the platform can stay open and accessible.
Secure your AI with confidence
Scan prompts manually in the dashboard, or protect live traffic with API keys that enforce safety checks in real time.