FireClaw – Open-source proxy defending AI agents from prompt injection
Isolated LLM with no tools or memory makes prompt injection hit a dead end.

One-line SDK swap + PR red-teaming with A-F grades—but 'detect-and-block' gateway category is well-funded.
AI/ML engineers and DevOps teams protecting production LLM applications from injection attacks
Robust Intelligence · Patronus AI · Lakera Guard
PromptGuard is a proxy: change your base URL (one line with our SDK, or a few lines without), and every request gets checked for prompt injection, PII leaks, jailbreaks, and abuse. 20+ threat vectors, 39+ PII types. We also ship a red team suite and an autonomous agent that mutates attacks to find bypasses - you get a grade (A-F) and a GitHub Action that runs these tests on every PR. So you see where you're weak before you ship.
Works with OpenAI, Anthropic, Google, Azure, Gemini and more. Policy-as-Code. 10K free requests/month - link in the post.
Happy to answer questions.
Isolated LLM with no tools or memory makes prompt injection hit a dead end.
Secret redaction and mlock security for AI gateways when LiteLLM already exists.
Heuristic-based shields beat LLM-in-the-loop detectors on speed, but Lakera Guard already owns this space.
Another AI security wrapper in a crowded market, but agent-side integration is interesting.
Bidirectional scanning catches response-side attacks when 28 other MCP tools only check requests.
Transparent proxy blocks agent leaks to LLM APIs without touching agent code.