Standard Beagle Tools

AI coding agent toolkit - browser superpowers, code intelligence, and development tools.

Plugins

This marketplace contains 13 plugins for Claude Code:

Plugin	Description	Version	Category
agnt	Browser superpowers: process management, reverse proxy, frontend debugging, sketch mode	0.7.12	development
lci	Lightning Code Index: sub-millisecond semantic code search	0.4.0	development
tools	Complete toolkit combining agnt and lci	1.0.0	development
mcp-architect	Design high-quality MCP servers with progressive discovery and token efficiency	0.1.0	development
mcp-tester	MCP server testing and debugging with mcp-debug	0.2.0	development
slop-mcp	SLOP integration for MCP management and orchestration	0.2.0	development
slop-coder	SLOP language coding assistant and reference	0.1.0	development
dartai	Dart task management with adversarial cooperation loops	0.3.0	development
workflow	General-purpose adversarial workflow automation	0.1.0	development
figma-query	Token-efficient Figma integration with design library extraction	0.1.0	design
ux-design	UX design principles, color theory, typography, and accessibility	0.1.0	design
ux-developer	UX-driven development with WCAG 2.2 and usability best practices	0.1.0	development
prompt-engineer	State-of-the-art prompt and context engineering for 2026	0.1.0	ai

Installation

Step 1: Install the binaries

# Via npm (recommended)
npm install -g @standardbeagle/agnt @standardbeagle/lci

# Via pip
pip install agnt lightning-code-index

# Via Go (lci only)
go install github.com/standardbeagle/lci/cmd/lci@latest

Step 2: Register MCP servers

Option A: Via slop-mcp (recommended if available)

mcp__plugin_slop-mcp_slop-mcp__manage_mcps
{ "action": "register", "name": "agnt", "command": "npx", "args": ["-y", "@standardbeagle/agnt", "mcp"], "scope": "user" }
{ "action": "register", "name": "lci", "command": "npx", "args": ["-y", "@standardbeagle/lci", "mcp"], "scope": "user" }

Option B: Add to .mcp.json

{
  "agnt": {
    "command": "npx",
    "args": ["-y", "@standardbeagle/agnt", "mcp"]
  },
  "lci": {
    "command": "npx",
    "args": ["-y", "@standardbeagle/lci", "mcp"]
  }
}

Step 3 (Optional): Install Claude Code plugins

The plugins provide commands, skills, and agents that help you use the MCP tools:

# Install the complete toolkit (recommended)
claude plugin add tools@standardbeagle-tools

# Or install individual plugins
claude plugin add agnt@standardbeagle-tools
claude plugin add lci@standardbeagle-tools

Plugin Details

agnt - Browser Superpowers

Give your AI coding agent browser superpowers:

• Process Management: Run and manage dev servers with output capture
• Reverse Proxy: HTTP traffic logging with automatic frontend instrumentation
• Browser Debugging: 50+ diagnostic functions (__devtool API)
• Sketch Mode: Excalidraw-like wireframing directly on the UI
• Design Mode: AI-assisted UI iteration with live preview
• Error Capture: JavaScript errors automatically available to agent

Requirements: agnt binary via npm/pip or GitHub releases

lci - Lightning Code Index

Sub-millisecond semantic code search and code intelligence:

• Instant Search: Find code patterns across any codebase in <5ms
• Symbol Lookup: Definitions, references, and implementations
• Call Hierarchy: Trace function calls up and down
• Codebase Overview: 79.8% context reduction for efficient analysis
• Context Manifests: Save/load code context for agent handoff
• Side Effect Analysis: Function purity and mutation tracking

Requirements: lci binary via npm/pip/go or GitHub releases

tools - Complete Toolkit

Best of both worlds - combines agnt and lci for the ultimate AI coding experience.

Requirements: Both agnt and lci binaries

Repository Structure

standardbeagle-tools/
├── .claude-plugin/
│   └── marketplace.json      # Marketplace registry
├── plugins/
│   ├── agnt/                 # Browser superpowers plugin
│   │   ├── .claude-plugin/
│   │   ├── commands/
│   │   ├── skills/
│   │   ├── agents/
│   │   └── mcp.json.disabled
│   ├── lci/                  # Code intelligence plugin
│   │   ├── .claude-plugin/
│   │   ├── commands/
│   │   ├── skills/
│   │   └── mcp.json.disabled
│   └── tools/                # Combined plugin
│       ├── .claude-plugin/
│       ├── commands/
│       ├── agents/
│       └── mcp.json.disabled
└── README.md

Note: The mcp.json.disabled files contain example configurations. MCP servers should be registered via slop-mcp or your personal .mcp.json to avoid duplicate registrations.

Development

Local Development Setup

After cloning, run the setup script to configure git filters for local development:

./scripts/setup-dev.sh

This configures git smudge/clean filters so that:

• Locally: mcp.json files use local binaries (agnt, lci)
• In commits: mcp.json files use npx commands for deployment

The filters are stored in your local git config. If you clone fresh, re-run the setup script.

Testing Plugins Locally

# Add marketplace from local directory
claude plugin add-dir /path/to/standardbeagle-tools

# Or test individual plugin
claude plugin add agnt --source ./plugins/agnt

Publishing

Plugins are published via the Claude Code marketplace. The marketplace.json defines all available plugins and their metadata.

License

MIT

Author

Standard Beagle