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Agent Plugins

Agent Plugins is a versioned, vendor-neutral specification for packaging reusable AI-agent extensions as distributable plugins. It defines a portable format for Agent Skills and MCP servers, with a documented manifest and skill-file layout that compatible clients can discover.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

Agent Plugins — OpenViST project profile in MCP & Tooling.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use the specification when designing or consuming a portable package for Agent Skills or MCP servers, especially when a client needs a defined manifest and discovery layout.

Who it is for

  • Developers building agent clients that need to discover packaged skills.
  • Teams defining reusable, distributable agent extensions.
  • Tooling developers exploring manifest validation, package indexing or plugin installation based on the specification.

Documented uses

  • Package an agent skill with a manifest in a defined directory layout.
  • Build a client-side loader that reads plugin.json and discovers skill files.
  • Use a shared package format as a foundation for tools that validate, index or install agent extensions.
Before you choose

Requirements & limits

The specification and its documents are available in a public repository.

  • Specification 1.0.0 is identified as the current published release; 1.1.0 is a working draft.
  • The documented discovery flow requires a client that supports skills.
  • The specification does not prescribe how discovered skills are exposed to users or models.
  • The format defines packaging; loaders, registries and validators are potential downstream tools rather than functions provided by the specification.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Set up a minimal skill plugin

Create the documented directory and file structure for a one-skill Agent Plugins package.

Before you start

  • A plugin directory
  • A plugin.json manifest
  • A skill file at skills/greet/SKILL.md

Steps

  1. Create a directory named hello-plugin.

  2. Add plugin.json with the 1.0.0 schema URL and the name hello-plugin.

  3. Create skills/greet/SKILL.md with name and description front matter, followed by the skill instructions.

Expected outcome

A minimal plugin package with one skill, which a client that supports skills can load by reading the manifest and discovering the skill file.

Guide limitations

  • The specification does not define how a client exposes the discovered skill to users or models.
  • This guide covers package setup, not client integration or execution.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
Source record details
Source availability
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Sources checked
16 October 2026
Original website title
agentplugins/agent-plugins-spec · Official homepage title · retained in its source language
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