Claude Code Plugins

A curated marketplace of plugins that extend Claude Code with typed hooks for development workflows. This repository provides both ready-to-use plugins and shared TypeScript utilities for creating your own.

Overview

This marketplace contains three production-ready plugins designed for modern development workflows:

• github-orchestration - GitHub workflow orchestration with branch context, commit enhancement, and CI management
• nextjs-supabase-ai-sdk-dev - Development quality enforcement with linting, type checking, and testing
• project-context - Context discovery, folder validation, and documentation management

All plugins leverage shared TypeScript utilities for consistent behavior, comprehensive type safety, and automatic logging. Hooks are self-executable TypeScript files with full type definitions.

Quick Start

Installation

1. Add this marketplace to your .claude/settings.json:

{
  "extraKnownMarketplaces": {
    "constellos": {
      "source": {
        "source": "directory",
        "path": "./.claude-plugin"
      }
    }
  }
}

1. Install plugins using the CLI:

claude plugin install github-orchestration@constellos
claude plugin install nextjs-supabase-ai-sdk-dev@constellos
claude plugin install project-context@constellos

Or enable them in your settings:

{
  "enabledPlugins": {
    "github-orchestration@constellos": true,
    "nextjs-supabase-ai-sdk-dev@constellos": true,
    "project-context@constellos": true
  }
}

Available Plugins

GitHub Orchestration (github-orchestration)

Purpose: Comprehensive GitHub workflow orchestration for issue-driven development with automatic context discovery and commit enhancement.

Key Features:

• Displays linked GitHub issue for current branch at session start
• Shows branch sync status (remote tracking branch and origin/main)
• Lists outstanding open issues available for work
• Auto-commits subagent work with task context and git trailers
• Automatically creates/updates GitHub issues from plan files
• Enhances commits with task and issue metadata
• Checks PR status at session end with CI and preview URL reporting
• Installs GitHub CLI on remote environments

Hooks:

• SessionStart (install-github.ts) - Installs GitHub CLI (non-blocking)
• SessionStart (add-github-context.ts) - Displays branch issue context and sync status (non-blocking)
• PostToolUse[Write|Edit] (sync-plan-to-issue.ts) - Syncs plan files to GitHub issues (non-blocking)
• PostToolUse[Bash] (enhance-commit-context.ts) - Enriches commits with task metadata (non-blocking)
• SubagentStop (commit-task.ts) - Auto-commits agent work (non-blocking)
• Stop (commit-session-check-pr-status.ts) - Session commit and PR checks (progressive blocking)

Use Cases:

• Issue-driven development with branch linking
• Multi-agent workflows with automatic commit documentation
• PR readiness checks before ending sessions
• Automated task documentation through enriched commits

Documentation: plugins/github-orchestration/README.md

---

Next.js Development Tools (nextjs-supabase-ai-sdk-dev)

Purpose: Enforces code quality through automated checks at both file and project levels for Next.js, Supabase, and AI SDK projects.

Key Features:

• Per-file quality checks (ESLint, TypeScript, TSDoc) on every edit
• Automatic test execution when test files are modified
• Comprehensive project-wide validation at session end (blocking)
• Installs Vercel and Supabase CLIs on remote environments
• Encourages UI review after ui-developer agent completes
• Logs all Task tool calls for context in SubagentStop hooks

Hooks:

• SessionStart (install-vercel.ts, install-supabase.ts) - CLI installation (non-blocking)
• PreToolUse[Task] (shared log-task-call.ts) - Task context logging (non-blocking)
• PostToolUse[Task] (shared log-task-result.ts) - Task result logging (non-blocking)
• PostToolUse[Task] (encourage-ui-review.ts) - UI review encouragement (non-blocking)
• PostToolUse[Write|Edit] (check-file-eslint.ts) - ESLint on files (non-blocking, informational)
• PostToolUse[Write|Edit] (check-file-types.ts) - TypeScript on files (non-blocking, informational)
• PostToolUse[Write|Edit] (check-file-tsdoc.ts) - TSDoc validation (non-blocking, informational)
• PostToolUse[Write|Edit test files] (check-file-vitest-results.ts) - Test execution (non-blocking, informational)
• Stop (check-global-eslint.ts) - Project-wide ESLint (blocking)
• Stop (check-global-types.ts) - Project-wide TypeScript (blocking)
• Stop (check-global-vitest-results.ts) - Full test suite (blocking)

Use Cases:

• Next.js application development
• TypeScript projects requiring strict type safety
• Projects with comprehensive test suites
• Teams enforcing code quality standards
• CI/CD workflows requiring pre-push validation

Documentation: plugins/nextjs-supabase-ai-sdk-dev/README.md

---

Project Context (project-context)

Purpose: Automatically discovers and links documentation, validates project structure, and provides intelligent guidance for Claude Code workflows.

Key Features:

• Discovers and links CLAUDE.md files when reading project files
• Validates .claude directory structure (agents, skills, rules, hooks)
• Enforces plan-based path scoping for file operations
• Validates rule files require proper Required Skills metadata
• Encourages context updates based on user prompts
• Redirects WebFetch to markdown versions of documentation URLs
• Creates PLAN.md symlink to active plan file
• Comprehensive task tracking and logging

Hooks:

• UserPromptSubmit (encourage-context-review.ts) - Context update encouragement (non-blocking)
• PreToolUse[Task] (shared log-task-call.ts) - Task logging (non-blocking)
• PreToolUse[Write|Edit] (shared validate-folder-structure-write.ts) - Folder validation (blocking on violations)
• PreToolUse[Write|Edit] (shared validate-rules-file.ts) - Rules validation (blocking on errors)
• PreToolUse[Bash] (shared validate-folder-structure-mkdir.ts) - mkdir validation (blocking on invalid paths)
• PreToolUse[WebFetch] (try-markdown-page.ts) - Markdown URL preference (non-blocking)
• PostToolUse[Task] (shared log-task-result.ts) - Task result logging (non-blocking)
• PostToolUse[Write|Edit] (create-plan-symlink.ts) - Plan symlink creation (non-blocking)
• PostToolUse[Write|Edit] (shared enforce-plan-scoping.ts) - Plan scope enforcement (can block)
• PostToolUse[Read] (add-folder-context.ts) - Context discovery (non-blocking)
• PostToolUse[Read] (shared enforce-plan-scoping.ts) - Read scope guidance (non-blocking)

Use Cases:

• Large codebases requiring organized documentation
• Projects with .claude directory structures
• Plan-driven development workflows
• Documentation-heavy projects
• Teams enforcing project structure standards
• Research-oriented development (markdown preference)

Documentation: plugins/project-context/README.md

---

Architecture

.
├── .claude-plugin/
│   └── marketplace.json        # Marketplace definition
│
├── shared/                     # Shared utilities for all plugins
│   ├── types/
│   │   └── types.ts           # Hook type definitions
│   ├── hooks/
│   │   ├── utils/             # Hook utilities (I/O, debug, etc.)
│   │   ├── log-task-call.ts   # PreToolUse[Task] hook
│   │   ├── log-task-result.ts # PostToolUse[Task] hook
│   │   ├── validate-folder-structure-write.ts
│   │   ├── validate-folder-structure-mkdir.ts
│   │   ├── validate-rules-file.ts
│   │   └── enforce-plan-scoping.ts
│   └── rules/                  # Rule documentation
│
└── plugins/                    # Individual marketplace plugins
    ├── github-orchestration/
    │   ├── .claude-plugin/plugin.json
    │   ├── README.md
    │   └── hooks/
    │       ├── hooks.json
    │       ├── install-github.ts
    │       ├── add-github-context.ts
    │       ├── sync-plan-to-issue.ts
    │       ├── enhance-commit-context.ts
    │       ├── commit-task.ts
    │       └── commit-session-check-pr-status.ts
    │
    ├── nextjs-supabase-ai-sdk-dev/
    │   ├── .claude-plugin/plugin.json
    │   ├── README.md
    │   └── hooks/
    │       ├── hooks.json
    │       ├── install-vercel.ts
    │       ├── install-supabase.ts
    │       ├── check-file-eslint.ts
    │       ├── check-file-types.ts
    │       ├── check-file-tsdoc.ts
    │       ├── check-file-vitest-results.ts
    │       ├── encourage-ui-review.ts
    │       ├── check-global-eslint.ts
    │       ├── check-global-types.ts
    │       └── check-global-vitest-results.ts
    │
    └── project-context/
        ├── .claude-plugin/plugin.json
        ├── README.md
        └── hooks/
            ├── hooks.json
            ├── encourage-context-review.ts
            ├── add-folder-context.ts
            ├── create-plan-symlink.ts
            └── try-markdown-page.ts

Creating Your Own Plugin

1. Create plugin directory structure

mkdir -p plugins/my-plugin/.claude-plugin
mkdir -p plugins/my-plugin/hooks

2. Create plugin.json

{
  "name": "my-plugin",
  "version": "0.1.0",
  "description": "My custom plugin",
  "author": { "name": "your-name" }
}

3. Create hooks/hooks.json

Important: Hooks must be wrapped in a "hooks" object.

{
  "description": "My plugin hooks",
  "hooks": {
    "SessionStart": [
      {
        "hooks": [
          {
            "type": "command",
            "command": "npx tsx ${CLAUDE_PLUGIN_ROOT}/hooks/my-hook.ts"
          }
        ]
      }
    ]
  }
}

4. Create hook file hooks/my-hook.ts

import type { SessionStartInput, SessionStartHookOutput } from '../../../shared/types/types.js';
import { runHook } from '../../../shared/hooks/utils/io.js';

async function handler(input: SessionStartInput): Promise<SessionStartHookOutput> {
  return {
    hookSpecificOutput: {
      hookEventName: 'SessionStart',
      additionalContext: 'My hook executed!',
    },
  };
}

export { handler };
runHook(handler);

5. Add to marketplace.json

{
  "plugins": [
    {
      "name": "my-plugin",
      "source": "./plugins/my-plugin"
    }
  ]
}

6. Create README.md

Document your plugin following the official Claude Code patterns. See existing plugin READMEs for examples.

Shared Utilities

All plugins can import from the shared/ folder for consistent behavior:

Types (shared/types/types.ts)

Full TypeScript typing for all Claude Code hook events:

• SessionStart, SessionEnd, Stop
• PreToolUse, PostToolUse
• SubagentStart, SubagentStop
• UserPromptSubmit
• And more

Hook Utilities (shared/hooks/utils/)

• io.ts - stdin/stdout JSON handling and runHook wrapper with automatic logging
• debug.ts - Debug logging with JSONL output to .claude/logs/hook-events.json
• transcripts.ts - Parse Claude transcript JSONL files
• subagent-state.ts - Save/load/analyze subagent context and file operations
• task-state.ts - Task state management for PreToolUse[Task] → SubagentStop flow
• package-manager.ts - Detect npm/yarn/pnpm/bun from lockfiles
• toml.ts - Simple TOML parser for config files
• was-tool-event-main-agent.ts - Detect if tool event is from main agent or subagent

Development

Testing

npm run typecheck     # TypeScript type checking
npm run lint          # ESLint
npm run test          # Vitest
npm run test:watch    # Vitest watch mode

Debug Logging

Enable debug output:

DEBUG=* claude              # All debug output
DEBUG=plugin-name claude    # Specific plugin

Debug logs are written to .claude/logs/hook-events.json in JSONL format.

Local Testing

After editing plugin files:

1. Exit Claude Code session
2. Start new session
3. Changes are automatically loaded

Troubleshooting

Plugins Not Loading

Issue: Plugins don't appear in Claude Code or hooks don't fire

Solution:

1. Verify .claude/settings.json has correct marketplace path and enabled plugins
2. Check plugin cache: ~/.claude/plugins/cache/
3. Reinstall plugins:

   claude plugin uninstall --scope project my-plugin@constellos
   claude plugin install --scope project my-plugin@constellos
   

4. Restart Claude Code session

Hooks Not Firing

Issue: Hooks registered but not executing

Solution:

1. Verify hooks.json has correct format with "hooks" wrapper object
2. Check .claude/logs/hook-events.json for hook execution logs
3. Ensure hook file paths use ${CLAUDE_PLUGIN_ROOT} variable
4. Reinstall plugin to refresh cache

When to Restart vs Reinstall

Requires NEW session (exit and restart Claude Code):

• Changes to .claude/settings.json
• Adding/removing plugins from marketplace
• Changes to marketplace.json

Requires plugin REINSTALL (no session restart needed):

• Changes to hooks/hooks.json
• Changes to hook implementation files (.ts)
• Changes to shared utilities
• Bug fixes or improvements

Reinstall command:

claude plugin uninstall --scope project my-plugin@constellos
claude plugin install --scope project my-plugin@constellos

Claude Worktree Launcher (cw)

This repository includes claude-worktree.sh, a utility script that creates isolated git worktrees for Claude Code sessions. Each session gets its own branch and worktree, enabling parallel development without conflicts.

Features

• Isolated Worktrees: Creates worktrees at ~/.claude-worktrees/{repo}/{branch-name}
• Automatic Branch Naming: Generates unique branch names like claude-kind-marmot-s7y8gh44
• Fresh Remote State: Always fetches and creates worktree from latest origin/main or origin/master
• Plugin Cache Refresh: Automatically reinstalls plugins to ensure worktree uses current plugin code
• Worktree Detection: If already in a worktree, navigates to parent repo first
• Tab Completion: Autocomplete repo names from known locations
• Repo Shortcuts: Jump to any repo by name or owner/repo path

Setup

Add to your ~/.bashrc or ~/.zshrc:

# Claude Worktree launcher with tab completion
source ~/constellos/claude-code/claude-worktree.sh

Then reload your shell:

source ~/.bashrc  # or source ~/.zshrc

You'll see: cw: Claude worktree command ready (tab completion enabled)

Usage

# From current directory
cw

# Jump to a repo by name (searches ~/constellos, ~/celestian-dev, ~/)
cw lazyjobs
cw nodes-md

# Jump to a repo by owner/name
cw celestian-dev/lazyjobs
cw constellos/claude-code

# Pass CLI flags to Claude
cw --verbose
cw lazyjobs --no-context

Tab Completion

cw laz<TAB>              # → lazyjobs
cw celestian-dev/<TAB>   # → shows all repos in ~/celestian-dev/
cw con<TAB>              # → constellos/

Known Repo Locations

The script searches these directories (in order):

• ~/constellos/
• ~/celestian-dev/
• ~/

How It Works

1. Resolves repo from argument (if provided) or uses current directory
2. Detects if you're in a git repository (launches Claude normally if not)
3. If in a worktree, navigates to parent repository first
4. Fetches latest from remote main branch
5. Creates new worktree at ~/.claude-worktrees/{repo}/{branch-name}
6. Refreshes project-scoped plugin cache
7. Launches Claude Code in the worktree
8. Returns you to the worktree directory when Claude exits

Dependencies

• git - Git version control
• jq - JSON processor (optional, for plugin cache refresh)

Install jq if needed:

# macOS
brew install jq

# Ubuntu/Debian
sudo apt install jq

Nodes-md MCP Server (Elysia-based)

The nodes-md project includes a custom MCP server built with Elysia and Supabase. This serves as a reference implementation for building MCP servers with the Bun runtime.

Architecture

• Framework: Elysia - Fast Bun web framework
• Database: Supabase for persistent storage
• Protocol: Model Context Protocol SDK

Location

~/constellos/nodes-md/apps/mcp/
├── src/
│   └── index.ts          # MCP server implementation
├── package.json          # Dependencies
└── tsconfig.json         # TypeScript config

Available Tools

Tool	Description
hello	Simple hello world test tool
create_nodeset	Create a new nodeset in the database

Running the Server

cd ~/constellos/nodes-md/apps/mcp
bun install
bun run src/index.ts

Environment Variables

SUPABASE_URL=your-supabase-url
SUPABASE_SECRET_KEY=your-service-role-key
PORT=3001  # Optional, defaults to 3001

Using as Reference

This implementation demonstrates:

• Elysia server setup with MCP SDK
• Supabase client initialization
• Tool definition patterns
• Type-safe database operations

Documentation

Comprehensive documentation:

• CLAUDE.md - Detailed technical documentation and architecture
• Individual plugin READMEs - Plugin-specific documentation with hooks, configuration, and usage

Skills documentation in .claude/skills/:

• claude-plugins - Plugin development guide
• claude-hooks - Hook types and patterns
• claude-skills - Agent Skills
• claude-commands - Slash commands
• claude-agents - Subagent configuration

Requirements

• Node.js 18+
• Claude Code CLI
• TypeScript (via tsx)

License

MIT

Contributing

Contributions welcome! Please ensure:

• All hooks are self-executable TypeScript files
• Proper typing using shared/types/types.ts
• Tests pass (npm test)
• Type checking passes (npm run typecheck)
• ESLint passes (npm run lint)
• Follow official Claude Code plugin patterns
• Document new plugins with comprehensive READMEs