Question 1

What is Aegis?

Accepted Answer

Aegis is a local-first AI firewall built as a single Rust binary. It runs a fine-tuned local LLM classifier to detect prompt injections, PII leaks, and other AI security threats. Your data never leaves your machine.

Question 2

Is Aegis really free?

Accepted Answer

Yes. The Shield tier is free forever and includes the full LLM classifier, 50+ injection patterns, PII detection, and gateway proxy mode. No trial, no credit card, no feature gating on the AI classifier.

Question 3

How does Aegis compare to Lakera Guard or Prompt Security?

Accepted Answer

Unlike Lakera Guard and Prompt Security which are cloud SaaS APIs that route your data through their servers, Aegis runs entirely on your machine. It adds 2ms latency (vs 200ms+ for cloud solutions), works offline, requires zero code changes, and the full LLM classifier is included free. Lakera's F1 score was measured at 0.30-0.78 in independent benchmarks by NeuralTrust.

Question 4

Does Aegis work offline?

Accepted Answer

Yes. After installation, Aegis runs 100% offline. The local LLM classifier runs in-process via direct FFI — no HTTP calls, no cloud dependency, no internet required.

Question 5

What does Aegis detect?

Accepted Answer

Aegis detects prompt injections (50+ patterns via Aho-Corasick DFA), wallet drainers targeting AI agents, PII data leaks (credit cards, private keys, API secrets, wallet addresses), encoded exfiltration attempts (Shannon entropy analysis), and jailbreak attempts — all in under 2ms.

Question 6

Can Aegis protect AI agents with wallet access?

Accepted Answer

Yes. Aegis catches wallet drainer prompts, transaction redirection attempts, and private key leaks targeting AI agents on Solana, Ethereum, and other chains. ETH private keys are hard-blocked, Solana addresses are flagged for review. In gateway mode, Aegis sits between your AI agent and the LLM, intercepting malicious context injection before it can trigger unauthorized transactions.

Question 7

How do I install Aegis?

Accepted Answer

Run: curl -fsSL https://get.aegis.dev | sh — this downloads the single static binary (~15MB), generates a CA certificate and default config, and downloads the LLM classifier model. Total install time: about 60 seconds.

Engineering & security research.

Aegis v0.1 Shield Preview — Now Available

Why Your AI Firewall Should Run Locally

Anatomy of a Wallet Drainer Prompt Injection