Megent launches a policy enforcement layer that intercepts AI agent tool calls before execution to control what agents can access and do.

Hacker News · April 29, 2026

AI Summary

•Megent catches every tool call an AI agent makes before it executes, checks it against a policy file, and returns ALLOW, STOP_TOOL, or HUMAN_IN_THE_LOOP decisions in under a millisecond.
•The system includes sensitive-data detection that identifies risky fields when agents call data, an identity layer using signed JWT passports to verify agent trust levels, and budget-limiting policies to set spend caps by agent, workflow, or day.
•Teams can wrap third-party agents they did not write—vendor plugins, marketplace agents, open-source bots—and enforce their own rules regardless of what's inside the black box, addressing supply chain risk when deploying agents with unknown behavior.

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