# AgentPlugins > Universal plugin standard for AI agents Write AI agent plugins once, ship to any harness. ## Table of Contents ### Getting Started - [Introduction – AgentPlugins](/guide/introduction.md): Learn how AgentPlugins unifies AI agent plugins across Claude Code, Codex, OpenCode, and more with a single manifest file. - [Installation](/guide/installation.md): Install the AgentPlugins CLI via npm, Homebrew, curl, or mise - [Quick Start – AgentPlugins](/guide/quick-start.md): Install AgentPlugins and create your first universal AI agent plugin in under 2 minutes. - [Capability Matrix](/guide/capability-matrix.md): What each supported harness supports — universal codegen, guided per-harness, or unsupported. Includes the native escape hatch for every gap so you can ship on the native path today. ### Concepts - [Manifest](/guide/manifest.md): Define your plugin with the AgentPlugins universal manifest format - [Hooks](/guide/hooks.md): Intercept agent lifecycle events with universal hooks - [Skills](/guide/skills.md): Reusable agent capabilities via SKILL.md - [MCP Servers](/guide/mcp-servers.md): Configure MCP (Model Context Protocol) servers once, deploy to all harnesses - [Tools](/guide/tools.md): Define callable tools that agents can invoke ### Authoring - [Creating Plugins – AgentPlugins](/guide/creating-plugins.md): Step-by-step guide to authoring an AgentPlugins manifest and shipping to seven AI agent harnesses. - [Porting an Existing Plugin](/guide/porting.md): Port an existing per-harness plugin to the AgentPlugins universal manifest with functional parity across all supported harnesses. - [Extending the Build Pipeline – AgentPlugins](/guide/extending.md): Add custom adapters, lint rules, IR transforms, and post-emit hooks to the AgentPlugins build pipeline without forking the tool. - [Linting](/guide/linting.md): Validate your plugin manifest before publishing - [Ecosystem](/guide/ecosystem.md): Community plugins built on the AgentPlugins universal manifest, installable across all Tier-1 harnesses. ### Reference - [CLI Commands](/reference/commands.md) - [JSON Schema](/reference/schema.md) - [Agent Paths](/reference/agent-paths.md) - [Adapters](/reference/adapters.md) ### Other - [Reference](/reference.md): API reference for AgentPlugins — CLI commands, JSON schema, agent paths, and platform adapters.