AgentSign

What it does

AgentSign is an open-source zero trust engine for AI agents. Every agent gets a cryptographic passport -- a self-contained signed JSON that proves identity and works offline. Before any MCP tool access, agents present their passport. AgentSign checks identity, trust score, and pipeline stage, returning ALLOW or DENY. Features: identity pipeline, execution chains, trust scoring (0-100), swarm revocation, HSM support. Self-hosted, on-prem, zero runtime deps. npm install agentsign. MIT licensed.

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  Hi HN! We're Haakam, Michael, and Adi from AgentMail- a ycs25 company. We give AI agents their own email inboxes. Recently, we ran an experiment called Agent.Email. It's a signup flow designed specifically for AI agents instead of humans. The inspiration came from a few comments we received when we did our seed launch a few months back. They all came from the very apt observation that agents not being able to sign up to a product made for agents without human credentials was ironic and unideal. This is basically the thesis we built AgentMail on: The internet was made for humans exclusively,…

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