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Amada Echeverría (@amadaecheverria) on X
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Amada Echeverría (@amadaecheverria) on X

jes is an open-source real-time guardrails project for AI agents, built by LangChain Ambassador Eden Marco, that inspects every step of an agent's trajectory — prompts, tool calls, tool results, skills, and responses. It runs on decision models like Jev from TypeSafeAI and ships with a LangChain middleware example for wiring the checks into an agent pipeline.

TL;DR Open-source agent guardrails tool (jes) that checks prompts, tool calls/results, skills and responses in real time using LangChain middleware.
Also seen from another angle🧠 AI →

Organisations named here

  • Eden Marco
  • TypeSafeAI

Technologies named here

  • jes
  • TypeSafeClassifier
  • LangChain
  • Jev