Agent-Skills: A Cross-Platform Unified Distribution Framework for Agent Skills

Agent-Skills is a plugin framework for agent skills supporting multiple platforms such as Claude Code, Codex, OpenCode. It aims to solve the current fragmentation problem of agent skills and realize a skill ecosystem of 'write once, distribute across multiple platforms'. Developers can define skills through a unified TypeScript interface, which automatically generates plugin packages adapted to different platforms, covering over 47 agent products. This reduces repetitive development and maintenance costs and improves cross-platform user experience.

With the popularity of AI programming assistants (e.g., Claude Code, Codex, OpenCode), agent skills have become important tools to improve development efficiency. However, the market is highly fragmented: each platform has independent skill definition formats, installation mechanisms, and execution environments, leading to repeated development of the same function, fragmented ecosystems, heavy maintenance burdens, and inconsistent user experiences. The Agent-Skills project was born to address this pain point.

The core concept of Agent-Skills is 'repository as deliverable'. Developers only need to maintain one GitHub repository, and users can install plugins adapted to different platforms through four methods: Claude Code (plugin market), Codex (plugin market/TUI configuration), OpenCode (npm package), and general (npx command). The project adopts a layered architecture: specification definition layer (defining skills with factory functions), factory layer (type safety and verification), emission layer (multi-platform code generator), and build product layer (plugin packages and configuration files for each platform).

The development toolchain requires Node.js ≥24 and pnpm 10. Dependencies are installed via pnpm install, plugin packages are generated via pnpm build, and type checking, code style checking, unit testing, etc., are executed via pnpm check. Technical highlights include: native TypeScript support (no compilation needed), Valibot type safety verification, cross-platform consistency testing (round-trip testing, cross-platform testing, etc.), and semantic versioning (current version v0.1).

As an intermediate layer solution for cross-platform agent skills, Agent-Skills does not replace existing platforms but enables cross-platform flow of skills through a unified abstraction layer. For developers: write once to reach users of over 47 tools; for users: seamlessly use the same skills; for the ecosystem: provides an open and extensible skill sharing infrastructure, which is expected to become an important support for the agent skill ecosystem.

Current limitations: The OpenCode path is not evaluated in real time, and the ecosystem is in the early stage. Future directions: expand support for more platforms, establish a skill review and rating mechanism, develop skill visualization tools, and build a skill dependency management system.