Plato
A single markdown file can hijack your AI agent.
Plato launched on March 21, 2026 with 1 votes, #8,013 of 23,380 launches that month.
What it does
Drop a SKILL.md into a repo. Codex or Claude picks it up. Now it's running instructions you didn't write. No exploit needed. It's just how skill loading works. The idea is simple: your agent should not trust whatever happens to be sitting inagents/skills. First open-source project, so please break it.
Secure skills for coding agents with local authorization and verified runtime exposure. - Alt5r/Plato
PlaTo lets you install Markdown-based agent skills from GitHub with the same simple flow people already use for skills.sh , but with a local trust gate in front of them. Skills are secured when installed, verified before use, and only then exposed to the agent runtime. curl -fsSL https://raw.githubusercontent.com/Alt5r/Plato/main/scripts/install.sh | bash Install channels and explicit versions are also supported: curl -fsSL https://raw.githubusercontent.com/Alt5r/Plato/main/scripts/install.sh | bash -s -- latest curl -fsSL https://raw.githubusercontent.com/Alt5r/Plato/main/scripts/install.sh | bash -s -- experimental curl -fsSL…from github.com
Does a similar job
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TesslFeb 2026 · tessl.io · ▲260I'm Guy, the founder behind Snyk — now building Tessl, a package manager for agent skills. We’ve recently witnessed that most teams still treat skills as static artifacts: markdown files, created or copied from repo to repo. This approach offers a strong initial boost, but quickly creates debt: - Skills are duplicated, and updates never roll out. - Poor quality skills go unseen, misguiding agents instead of helping. - Skill knowledge grows stale, and don’t keep up with the systems and practices they describe. Without a way to evaluate skills, teams have no clear way to understand how good a…
AgentGuard15d ago · agentguard-sigma-five.vercel.app · ▲71Scan AI agent Skills for risks before you install them
- OSOpenSkills – Stop bloating your LLM context with unused instructionsJan 2026 · ▲9
Hello HN, I’ve been building AI agents lately and ran into a common "Context Bloat" problem. When an agent has 20+ skills, stuffing every system prompt, reference doc, and tool definition into a single request quickly hits token limits and degrades model performance (the "lost in the middle" problem). To solve this, I built OpenSkills, an open-source SDK that implements a Progressive Disclosure Architecture for agent skills. The Core Concept: Instead of loading everything upfront, OpenSkills splits a skill into three layers: Layer 1 (Metadata): Light-weight tags and triggers (always loaded…

Generate SKILL.md files from URLs, in the browserMay 2026 · getskillify.dev · ▲10I created this tool after writing a few agent skills by hand and noticing this pattern was repetitive. Paste a documentation URL, enter your own model API key, and it gets the page content client-side to create a reusable SKILL.md. There is no backend/proxy, so it stays as secure as possible. I would like feedback on the structure of the output and the edge cases.
vettFeb 2026 · vett.sh · ▲5Hey HN. I built a security registry for AI agent skills. There are 64k skills on Vercel's skills.sh. Cursor, Claude Code, Windsurf, and dozens more agents pull them from GitHub at HEAD — no versioning, signing, or scanning. The OpenClaw agents themselves flagged this: "The supply chain attack nobody is talking about: skill.md is an unsigned binary."[0] I took an official skill that packages other skills, added a few lines of Python to exfiltrate env vars, shell history, and git config, and installed it into Claude Code and Codex. Claude Code ran the script without flagging the outbound…
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