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Agent Firewall – Go proxy to kill LLM death spirals
Wire-protocol circuit breaker for agents when LangSmith costs too much.
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wuweiaxin
212mo ago
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Senthex AI firewall for LLM API calls (one line of code, 16ms overhead)
by yohann_senthex·Apr 7, 2026·2 points·0 comments
AI Analysis
●●SolidSolve My ProblemSlick
Heuristic-based shields beat LLM-in-the-loop detectors on speed, but Lakera Guard already owns this space.
Strengths
- •24 heuristic shields running inline without adding an LLM to the detection loop.
- •Drop-in OpenAI client replacement with typed exceptions for InjectionBlocked and BudgetExceeded.
- •SSE streaming support for both OpenAI and Anthropic event formats.
Weaknesses
- •AI firewall category is crowded with Lakera, ProtectAI, and PromptArmor already established.
- •Heuristic-only approach may miss novel attack patterns that semantic detection would catch.
Category
Target Audience
Developers deploying LLM-powered applications in production
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Lakera Guard · ProtectAI · PromptArmor
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