All Listings/AI Skills/Agent Skills Specification
Self-hosted Tools
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Agent Skills Specification — Logo

Agent Skills Specification

Self

Open-source tool. Self-hosted setup.

Specification and documentation for Agent Skills.

This is the standards body for the format everything else in this list implements: the open specification behind SKILL.md-style portability across Claude Code, Codex, Cursor, and other agents, maintained under the agentskills.io banner referenced throughout the ecosystem.

  • Defines the open Agent Skills specification, not a content pack
  • Backing standard for the agentskills.io compatibility claims seen across this list
  • Apache 2.0 licensed documentation and spec repository
  • Reference point for anyone building a new skill-authoring tool

Things to Know About Self-Hosted

Self-hosted tools are open-source apps you install on your own server to replace SaaS products. You get full control and often zero license cost, but you're responsible for setup, security, backups, and uptime.

  • Caution: You might need capable hosting or a VPS
  • Caution: Setup requires technical experience
  • Caution: You manage updates and patches
  • Caution: Security and backups are your job
  • Caution: Uptime depends on your server
  • Caution: Scaling may need extra work

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