AG2 Agent Builder - Claude Code Plugin Marketplace

A Claude Code plugin marketplace for building AG2 (AutoGen) based agents, multi-agent workflows, and A2A services.

Installation

# In Claude Code
/plugin marketplace add ag2ai/ag2-claude-plugins

Or for local development:

/plugin marketplace add /path/to/ag2-claude-plugins

Then install individual plugins from the Discover tab:

/plugin

Plugins

ag2-agent-scaffold

Scaffold new AG2 agents with proper structure, tool functions, and A2A server wiring.

Skill	Description
/new-agent	Create a ConversableAgent with tools, system prompt, and LLM config
/new-a2a-agent	Create a full A2A-compliant agent with server wiring and CardSettings

ag2-workflow-patterns

Multi-agent orchestration patterns for common use cases.

Skill	Description
/ag2-chat-fundamentals	Learn AG2 chat fundamentals and ConversableAgent basics
/two-agent-chat	Set up a two-agent conversation pattern
/sequential-chat	Create a sequential multi-agent pipeline
/group-chat	Set up a multi-agent group chat with configurable speaker selection
/group-chat-auto-pattern	Group chat with automatic speaker selection pattern
/nested-chat	Create nested chat workflows (hub-and-spoke)

ag2-tool-builder

Create well-structured tool functions with proper contracts.

Skill	Description
/new-tool	Generate a tool function with type annotations, docstrings, and JSON contracts
/connector-tool	Build API connector tools with auth handling, pagination, and error mapping

ag2-agent-reviewer

Review AG2 agent code for common issues.

Agent	Description
ag2-reviewer	Analyzes agent code for tool contract violations, prompt quality, security, and best practices

ag2-agent-guide

Architecture advisors for AG2 agent systems.

Agent	Description
ag2-architect	Recommends orchestration patterns (group chat, pipeline, handoffs, etc.) based on your use case
ag2-prompt-engineer	Crafts and reviews system prompts for maximum agent reliability

Pattern Quick Reference

Need	Pattern	Plugin
Single agent with API access	Tool-augmented agent	ag2-agent-scaffold
Draft + review cycle	Two-agent chat	ag2-workflow-patterns
Step-by-step processing	Sequential pipeline	ag2-workflow-patterns
Collaborative problem solving	Group chat	ag2-workflow-patterns
Expert consultation	Nested chats (hub-and-spoke)	ag2-workflow-patterns
Context-dependent routing	Group chat (DefaultPattern with handoffs)	ag2-workflow-patterns
Deployable A2A service	A2A agent server	ag2-agent-scaffold

AG2 Resources

• AG2 Documentation
• AG2 GitHub
• A2A Protocol

Contributing

1. Fork the repository
2. Create a feature branch
3. Add or modify plugins under plugins/
4. Test locally with /plugin marketplace add ./ag2-claude-plugins
5. Submit a pull request

Adding a New Plugin

1. Create a directory under plugins/<plugin-name>/
2. Add .claude-plugin/plugin.json with name, version, description
3. Add skills (skills/<name>/SKILL.md) or agents (agents/<name>.md)
4. Add the plugin entry to .claude-plugin/marketplace.json
5. Test with /plugin marketplace add . and verify your skills/agents appear

License

Apache-2.0