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AegisGate
ax128 February 25, 2026
34 copies 0 downloads
Open-source security gateway for LLM APIs — prompt injection detection, PII redaction, dangerous response sanitization, and audit logging. OpenAI/Claude compatible, MCP & Agent SKILL support. Drop-in proxy for AI coding agents (Cursor, Claude Code, Codex).
Agent Definition
# AegisGate > **English** | **[中文](README_zh.md)** **Open-source security gateway for LLM API calls** — sits between your AI agents/apps and upstream LLM providers, enforcing security policies on both request and response sides. ## What is AegisGate? AegisGate is a self-hosted, pipeline-based security proxy designed to protect LLM API traffic. Point your application's `baseUrl` at the gateway, and it automatically applies PII redaction, prompt injection detection, dangerous command blocking, and output sanitization before forwarding to the real upstream model. ### Key Features - **Prompt Injection Protection** — Multi-layer detection: regex patterns, TF-IDF semantic classifier (bilingual EN/ZH, no GPU required), Unicode/encoding attack detection, typoglycemia defense - **PII / Secret Redaction** — 50+ pattern categories covering API keys, tokens, credit cards, SSNs, crypto wallet addresses/seed phrases, medical records, and infrastructure identifiers - **Dangerous Response Sanitization** — Automatic obfuscation of high-risk LLM outputs (shell commands, SQL injection payloads, HTTP smuggling) with configurable security levels (low/medium/high) - **OpenAI-Compatible API** — Drop-in replacement for `/v1/chat/completions`, `/v1/responses`, `/v1/messages`, and generic proxy; works with any OpenAI-compatible provider - **Anthropic ↔ OpenAI Protocol Conversion** — Token-based `compat` mode converts Anthropic `/v1/messages` requests to OpenAI `/v1/responses` on the fly, enabling Claude Code / Anthropic SDK to talk to OpenAI-compatible upstreams (GPT-5.4, etc.) without code changes - **MCP & Agent SKILL Support** — Integrates with Cursor, Claude Code, Codex, Windsurf and other AI coding agents via Model Context Protocol - **Token-Based Routing** — Route requests to multiple upstream providers through a single gateway with per-token upstream mapping and whitelist controls - **Web Management Console** — Built-in admin UI for configuration, token management, security rule
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