Agent Alchemy

A plugin suite and developer toolkit that extends Claude Code into a structured development platform — from specs to tasks to autonomous execution.

What is Agent Alchemy?

Agent Alchemy is an open-source toolkit for AI and software engineers who use Claude Code. It adds structured development workflows on top of Claude Code through six plugins, a real-time task manager, and a VS Code extension — all designed to work together as an integrated pipeline.

Everything is built with Claude Code for Claude Code. The plugins are plain markdown — readable, editable, and version-controlled like any other code.

Components

Claude Code Plugins

Six plugin groups providing 28 skills and 16 agents:

Plugin	Description
SDD Tools	Spec-Driven Development — turn ideas into specs, specs into tasks, and tasks into autonomous execution
Dev Tools	Feature development, code review, architecture patterns, documentation, and changelog management
Core Tools	Codebase analysis, deep exploration with multi-agent teams, and language patterns
TDD Tools	Test-Driven Development — RED-GREEN-REFACTOR workflows, test generation, and coverage analysis
Git Tools	Conventional Commits automation
Plugin Tools	Plugin porting, adapter validation, ported plugin maintenance, and ecosystem health analysis

Task Manager

A Next.js real-time Kanban dashboard for monitoring autonomous task execution. Tasks update live via filesystem watching and Server-Sent Events.

See more screenshots screenshots below

VS Code Extension

Schema validation, YAML frontmatter autocomplete, and hover documentation for Claude Code plugin development.

Getting Started

Prerequisites

• Claude Code CLI installed
• Node.js >= 18.0.0
• pnpm >= 8.0.0

Install Plugins

# Install from the Claude Code marketplace
claude plugins install agent-alchemy/agent-alchemy-sdd-tools
claude plugins install agent-alchemy/agent-alchemy-dev-tools
claude plugins install agent-alchemy/agent-alchemy-core-tools
claude plugins install agent-alchemy/agent-alchemy-git-tools
claude plugins install agent-alchemy/agent-alchemy-tdd-tools
claude plugins install agent-alchemy/agent-alchemy-plugin-tools

Run Task Manager

pnpm install
pnpm dev:task-manager
# Open http://localhost:3030

Build VS Code Extension

cd extensions/vscode
npm install
npm run build
npm run package

Configuration

Plugin behavior is configured via .claude/agent-alchemy.local.md — a markdown file with nested key-value pairs using key: value syntax. This file is not committed to version control.

File Format

- deep-analysis:
  - direct-invocation-approval: true
  - invocation-by-skill-approval: false
- execute-tasks:
  - max_parallel: 5
- author: Your Name
- spec-output-path: specs/

Settings Reference