PolySkill —Free Verified AI Agent Skills - Open verified skills marketplace for any AI agent

Polyskill stands out as a truly open, LLM-agnostic marketplace—unlike locked-in platforms like ClawHub (which suffered hacks) or proprietary tools in Claude/Code/Codex. Key features: Verified skills, seamless agent installs (just instruct your AI), free publishing/browsing, and cross-agent compatibility (OpenClaw, Claude, Codex+). No vendor lock-in, pure extensibility