majestic-engineer

Majestic Marketplace

The Majestic marketplace where we share our workflows.

New here? Check out the Marketplace Tutorial for an interactive walkthrough.

The Shift: Engineers Orchestrate Agents

Coding is no longer the bottleneck. Planning, review, and learning loops matter more than syntax. Each feature makes the next one easier to build.

Plan → Work → Assess → Reflect

Step	What Happens	Key Tools
Plan	Agents research codebase + best practices, produce detailed implementation plans	/majestic:plan, architect agent
Work	Agents write code, tests, and iterate using real app feedback	/majestic:build-task, coder skills
Assess	Multi-angle review: security, performance, simplicity, conventions	/majestic:code-review, quality-gate
Reflect	Analyze session patterns, capture lessons so future agents improve	/majestic-tools:insight:reflect, /majestic:add-lesson

See the Workflow Guide for detailed documentation.

Quick Start

Run the installer:

curl -fsSL https://raw.githubusercontent.com/majesticlabs-dev/majestic-marketplace/master/install.sh | bash

This gives you options to:

1. Add marketplace (enables plugin installation)
2. Add output styles (formatting guides)
3. Add MCP servers (Sequential Thinking)
4. Configure shell settings (env vars + alias)
5. Install Beads (AI agent memory)
6. Install all

Manual Installation

Claude Code

Run claude and add the marketplace:

/plugin marketplace add https://github.com/majesticlabs-dev/majestic-marketplace.git

Then install a plugin:

/plugin install {plugin-name}

OpenCode and Codex

Export Majestic plugins to OpenCode or Codex with schema-aware conversion:

./scripts/install-codex.sh

# Install all plugins
./scripts/install-codex.sh --all

# Install all plugins to OpenCode
./scripts/install-opencode.sh --all

# Install specific plugins
./scripts/install-codex.sh engineer rails tools

# Example (explicit): convert engineer, rails, and tools to OpenCode
# Output target: ~/.config/opencode
./scripts/install-opencode.sh engineer rails tools

# Install one plugin (short or prefixed)
./scripts/install-codex.sh engineer
./scripts/install-codex.sh majestic-tools

Both commands are now local to this repository and only require Ruby (scripts/convert-plugin.rb).

This runs a converter pipeline (not a plain file copy), so incompatible Claude metadata is translated for target formats.

disable-model-invocation frontmatter is preserved as part of source metadata parsing, but it does not exclude a command from conversion for OpenCode/Codex output.

Output locations:

• Codex: ~/.codex/skills/ and ~/.codex/prompts/
• OpenCode: ~/.config/opencode (opencode.json, agents/, skills/, plugins/)

Limitations: Codex still does not support some Claude Code features (Task, hooks, some MCP integrations), so behavior is reduced there.

Majestic Plugins

Plugin	Description
majestic-engineer	Language-agnostic engineering workflows (17 agents, 8 commands, 12 skills)
majestic-rails	Ruby on Rails development tools (23 agents, 5 commands, 9 skills)
majestic-react	Modern React development with TypeScript (3 agents, 1 command, 4 skills)
majestic-python	Python development tools (2 agents)
majestic-devops	Infrastructure-as-Code and DevOps workflows (1 agent, 8 skills)
majestic-llm	External LLM integration - Codex, Gemini (5 agents, 1 command)
majestic-marketing	Marketing and SEO tools (14 agents, 2 commands, 24 skills)
majestic-sales	Sales acceleration tools (1 command, 6 skills)
majestic-company	Business operations and CEO tools (2 agents, 21 skills)
majestic-experts	Expert panel discussion system (2 agents, 1 command)
majestic-tools	Claude Code customization tools (10 commands, 3 skills)

Recommended Tools

Anthropic Official