claude-mods

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A comprehensive extension toolkit that transforms Claude Code into a specialized development powerhouse.

claude-mods is a production-ready plugin that extends Claude Code with 23 expert agents, 66 specialized skills, 5 output styles, 4 hooks, and modern CLI tools designed for real-world development workflows. Whether you're debugging React hooks, optimizing PostgreSQL queries, or building production CLI applications, this toolkit equips Claude with the domain expertise and procedural knowledge to work at expert level across multiple technology stacks.

Built on Anthropic's Agent Skills standard, claude-mods fills critical gaps in Claude Code's capabilities: persistent session state that survives across machines, on-demand expert knowledge for specialized domains, token-efficient modern CLI tools (10-100x faster than traditional alternatives), and proven workflow patterns for TDD, code review, and feature development. The toolkit implements Anthropic's recommended patterns for long-running agents, ensuring your development context never vanishes when sessions end.

From Python async patterns to Rust ownership models, from AWS Fargate deployments to Craft CMS development - claude-mods provides the specialized knowledge and tools that transform Claude from a general-purpose assistant into a domain expert who understands your stack, remembers your workflow, and ships production code.

23 agents. 66 skills. 5 styles. 4 hooks. One install.

Recent Updates

v2.3.0 (March 2026)

• 🎯 Orchestrator-dispatch pattern - Three skills upgraded from static reference dumps to active orchestrators that classify intent, dispatch to agents, and manage safety tiers:
  • git-ops + git-agent - First skill+agent pair. Orchestrator routes T1 reads inline, dispatches T2 writes and T3 destructive ops to a dedicated Sonnet background agent with preflight confirmation. Replaces git-workflow.
  • perf-ops - Routes profiling to language experts (python-expert for py-spy, go-expert for pprof, etc.). Parallel CPU+memory profiling, before/after benchmarking protocol.
  • security-ops - 3 parallel audit agents (dependency scan, SAST patterns, auth/config review) consolidate into OWASP-mapped severity report. Modelled on techdebt's parallel scanner architecture.
• 📚 Skill preloading - Dispatching skills now instruct agents to read relevant skill references before starting work. Review and testgen agents load security-ops + testing-ops context. Perf-ops agents load profiling references. Git-agent loads CI/CD context for releases.
• 🔧 model: sonnet specified for all expert dispatch - Cheaper, faster analysis without sacrificing quality for read-only review, test generation, and profiling tasks.

v2.2.0 (March 2026)

• 🔍 /introspect enhanced - Now generates Session Insights after every analysis: workflow improvements, skill suggestions, and ready-to-paste permission configs to reduce interruptions. Scales recommendations to session size.
• 🔧 /setperms expanded - Default template now includes 74 tool permissions (was 51): docker, cargo, go, pytest, npx, pnpm, yarn, bun, make, archive tools, data utilities.
• 🗑️ claude-code-templates removed - Redundant with Anthropic's first-party skill-creator. Install scripts auto-clean existing installs.

v2.1.0 (March 2026)

• 🔁 /iterate skill - Autonomous improvement loop inspired by Karpathy's autoresearch. Define a goal, scope, and mechanical metric - the agent loops autonomously: modify, measure, keep or discard, repeat. Works for any domain (test coverage, bundle size, performance, ML training, code quality).

v2.0.0 (March 2026)

• 🚀 64 skills - 22 new -ops skills covering React, Vue, JavaScript, Go, Rust, TypeScript, Docker, CI/CD, API design, PostgreSQL, Astro, Laravel, Nginx, Auth, Monitoring, Debug, MCP, Tailwind, Migrate, Refactor, Scaffold, Perf, Log analysis
• 🔄 Renamed -patterns to -ops - All 14 pattern skills renamed to signal comprehensive operational expertise
• 🛠️ cc-session CLI - Zero-dependency session log analyzer (15 commands, --json output, cross-project search)
• 📦 Install scripts updated - Automatic cleanup of renamed skills, preserves project-specific extras
• 🏷️ 3 hooks, 4 output styles - Pre-commit lint, post-edit format, dangerous command warnings; Vesper, Spartan, Mentor, Executive

v1.7.0 (February 2026)

• 🔄 Schema v3.1 - /save and /sync upgraded for Claude Code 2.1.x and Opus 4.6
  • Session ID tracking with --resume suggestions (bridges task state + conversation history)
  • PR-linked sessions via gh pr view with --from-pr suggestions
  • Native memory integration - /save writes to MEMORY.md (auto-loaded safety net)
  • Dynamic plan path via plansDirectory setting (Claude Code v2.1.9+)
  • Dropped legacy v2.0 migration code

v1.6.0 (February 2026)

• 🚀 Tech Debt Scanner - Automated detection using parallel subagents (1,520 lines)
  • Always-parallel architecture for fast analysis (2-15s depending on scope)
  • 4 categories: Duplication, Security, Complexity, Dead Code
  • Session-end workflow: catch issues while context is fresh
  • Language-smart: Python, JS/TS, Go, Rust, SQL with AST-based detection
  • Boris Cherny's recommendation: "Build a /techdebt slash command and run it at the end of every session"

v1.5.2 (February 2026)

• 🆕 Added cli-ops, screenshot, skill-creator skills (+3 skills, now 42 total)
• 📚 Enhanced skill-creator with official Anthropic docs and best practices (+554 lines)
• 🐛 Fixed /sync filesystem scanning issue on Windows (Git Bash compatibility)

View full changelog →

Why claude-mods?

Claude Code is powerful out of the box, but it has gaps. This toolkit fills them:

• Session continuity — Tasks vanish when sessions end. We fix that with /save and /sync, implementing Anthropic's recommended pattern for long-running agents.

• Expert-level knowledge on demand — 22 specialized agents covering React, TypeScript, Python, Go, Rust, AWS, PostgreSQL, and more. Each agent is deeply researched with real-world patterns, not generic advice.

• Modern CLI tools — Stop using grep, find, and cat. Our rules automatically prefer ripgrep, fd, eza, and bat — 10-100x faster and token-efficient.

• Smart web fetching — A fallback hierarchy that actually works: WebFetch → Jina Reader → Firecrawl. No more "I can't access that URL."

• Workflow patterns — TDD cycles, code review, feature development, debugging — all documented with Anthropic's best practices.

Key Benefits

• Persistent task state — Pick up exactly where you left off, even across machines
• Domain expertise — Agents trained on framework docs, not just general knowledge
• Token efficiency — Modern CLI tools produce cleaner output, saving context window
• Team sharing — Git-trackable state files work across your whole team
• Production-ready — Validated test suite, proper plugin format, comprehensive docs
• Extended thinking — Built-in guidance for "think hard" and "ultrathink" triggers
• Zero lock-in — Standard Claude Code plugin format, toggle on/off anytime

Structure

claude-mods/
├── .claude-plugin/     # Plugin metadata
├── agents/             # Expert subagents (22)
├── commands/           # Slash commands (3)
├── skills/             # Custom skills (66)
├── output-styles/      # Response personalities
├── hooks/              # Hook examples & docs
├── rules/              # Claude Code rules
├── tools/              # Modern CLI toolkit installers
├── scripts/            # Plugin install scripts
├── tests/              # Test suites + justfile
├── docs/               # Project docs (PLAN.md, DASH.md)
└── templates/          # Extension templates

Installation

Plugin Install (Recommended)

# Step 1: Add the marketplace
/plugin marketplace add 0xDarkMatter/claude-mods

# Step 2: Install the plugin
/plugin install claude-mods@0xDarkMatter-claude-mods

This installs globally (available in all projects). Toggle on/off with /plugin menu.

Script Install

Linux/macOS:

git clone https://github.com/0xDarkMatter/claude-mods.git
cd claude-mods
./scripts/install.sh

Windows (PowerShell):

git clone https://github.com/0xDarkMatter/claude-mods.git
cd claude-mods
.\scripts\install.ps1

The install scripts:

• Copy commands, skills, agents, rules, output styles to ~/.claude/
• Clean up deprecated items (e.g., old /conclave command)
• Remove renamed skills (e.g., -patterns -> -ops)
• Handle command→skill migrations (won't create duplicates)
• Preserve any extra skills installed separately (e.g., project-specific skills)

CLI Tools (Optional)

Install modern CLI tools (fd, rg, bat, etc.) for better performance:

# Windows (Admin PowerShell)
.\tools\install-windows.ps1

# Linux/macOS
./tools/install-unix.sh

Skill Architecture

All skills follow Anthropic's official pattern with consistent structure:

skill-name/
├── SKILL.md              # Core workflow (< 500 lines)
├── scripts/              # Executable code (optional)
├── references/           # Documentation loaded as needed (optional)
└── assets/               # Output templates/files (optional)

Progressive Loading:

1. Metadata (name + description) - Always in context (~100 words)
2. SKILL.md body - Loaded when skill triggers (<5k words)
3. Bundled resources - Loaded only when Claude needs them

All skills have the complete directory structure, even if scripts/, references/, or assets/ are currently empty. This ensures consistency and makes it easy to add bundled resources later.

See skill-creator for the complete guide.

What's Included

Commands

Skills

Language & Framework Skills

Data & API Skills

Infrastructure Skills

CLI Tool Skills

Workflow Skills

Development Skills

Hooks

Output Styles

Agents

Rules

Tools & Hooks

Web Fetching Hierarchy

When fetching web content, tools are used in this order:

See tools/README.md for full documentation and install scripts.

Testing & Validation

Validate all extensions before committing:

cd tests

# Run full validation (requires just)
just test

# Or run directly
bash validate.sh

# Windows
powershell validate.ps1

What's Validated

• YAML frontmatter syntax
• Required fields (name, description)
• Naming conventions (kebab-case)
• File structure (agents/.md, skills//SKILL.md)

Available Tasks

cd tests
just              # List all tasks
just test         # Run full validation
just validate-yaml # YAML only
just validate-names # Naming only
just stats        # Count extensions
just list-agents  # List all agents

Session Continuity

The /save and /sync commands fill a gap in Claude Code's native session management.

The problem: Claude Code's --resume flag restores conversation history, but task state does not persist between sessions—by design. Claude Code treats each session as isolated; the philosophy is that persistent state belongs in files you control.

Tasks (created via TaskCreate, managed via TaskList/TaskUpdate) are session-scoped and deleted when the session ends. This is intentional.

The solution: /save and /sync implement the pattern from Anthropic's Effective Harnesses for Long-Running Agents:

"Every subsequent session asks the model to make incremental progress, then leave structured updates."

What Persists vs What Doesn't

Session Workflow

Session 1:
  /sync                              # Bootstrap + restore saved state
  [work on tasks]
  /save "Stopped at auth module"     # Writes session-cache.json + MEMORY.md

Session 2:
  [MEMORY.md auto-loaded: "Goal: Auth, Branch: feature/auth, PR: #42"]
  /sync                              # Full restore: tasks, plan, git, PR
  → "Previous session: abc123... (claude --resume abc123...)"
  → "In progress: Auth module refactor"
  → "PR: #42 (claude --from-pr 42)"

Why Not Just Use --resume?

Use both together: claude --resume for conversation context, /sync for task state. Since v3.1, /save stores your session ID so /sync can suggest the exact --resume command.

Session Cache Schema (v3.1)

The .claude/session-cache.json file stores full task objects:

{
  "version": "3.1",
  "session_id": "977c26c9-60fa-4afc-a628-a68f8043b1ab",
  "tasks": [
    {
      "subject": "Task title",
      "description": "Detailed description",
      "activeForm": "Working on task",
      "status": "completed|in_progress|pending",
      "blockedBy": [0, 1]
    }
  ],
  "plan": { "file": "docs/PLAN.md", "goal": "...", "current_step": "...", "progress_percent": 40 },
  "git": { "branch": "main", "last_commit": "abc123", "pr_number": 42, "pr_url": "https://..." },
  "memory": { "synced": true },
  "notes": "Session notes"
}

Compatibility: /sync handles both v3.0 and v3.1 files gracefully. Missing v3.1 fields are treated as absent.

Updating

git pull

Then re-run the install script to update your global Claude configuration.

Performance Tips

MCP Tool Search

When using multiple MCP servers (Chrome DevTools, Vibe Kanban, etc.), their tool definitions consume context. Enable Tool Search to load tools on-demand:

// .claude/settings.local.json
{
  "env": {
    "ENABLE_TOOL_SEARCH": "true"
  }
}

Requirements: Sonnet 4+ or Opus 4+ (Haiku not supported)

Skills Over Commands

Most functionality lives in skills rather than commands. Skills get slash-hint discovery via trigger keywords and load on-demand, reducing context overhead. Only session management (/sync, /save) and experimental features (/canvas) remain as commands.

See docs/COMMAND-SKILL-PATTERN.md for details.

Resources

• Claude Code Best Practices — Official Anthropic guide
• Claude Code Plugins — Plugin system documentation
• Effective Harnesses for Long-Running Agents — The pattern behind /save

Extend Claude Code. Your way.