Claude Code Plugins by Ivan Histand

Claude Code plugins for data engineering (sqlanvil-toolkit), 3D printing workflows (stl-generator-toolkit) and living product requirements (prd-toolkit). The former dataform-toolkit plugin was retired 2026-09-15; its dataform-engineering-fundamentals skill now lives in the acuantia-gcp-dataform repo. The acuantia-dataform plugin moved to Acuantia's private team marketplace (gitlab.com/acuantia/claude-plugins) on 2026-09-01 and was removed from here on 2026-09-20.

Available Plugins

prd-toolkit

A living PRD as the single authority agents build, test and deploy from: a PRD folder in the repo with contracts and black-box test cases, a 27-rule linter, standards and skills registries, and skills to author and change it.

Features:

• authoring-prds skill - Interviews to docs/prd/<project>/, lints it, dry-runs it with prd-tester, and approves it
• changing-prds skill - Changes the PRD first, with new IDs and a version bump, before any code
• Slash commands: /prd-new, /prd-adopt and /prd-change
• Lint CLI: prd_lint.py checks 27 rules; prd_block.py writes the CLAUDE.md block

For full documentation: See prd-toolkit/README.md

stl-generator-toolkit

Comprehensive toolkit for generating 3D printable STL files for woodworking jigs and fixtures using CadQuery.

Features:

• stl-generator skill - Pre-built scripts, CadQuery patterns, printer specifications (Elegoo Neptune 4 Pro), and design best practices
• Slash commands for common jigs:
  • /stl-generate - Generate custom STL files for any woodworking jig
  • /stl-circle-jig - Quick generation of circle cutting jigs for router work
  • /stl-angle-wedge - Generate angle guide wedges for compound cuts
  • /stl-spacing-block - Create precision spacing blocks for assembly
• Pre-built scripts: Circle cutting jigs, angle wedges, spacing blocks
• Reference files: CadQuery patterns and printer specifications

For full documentation: See stl-generator-toolkit/README.md

Installation

Install from GitHub

# Add this marketplace to Claude Code
/plugin marketplace add ihistand/claude-plugins

# Or use the full GitHub URL
/plugin marketplace add https://github.com/ihistand/claude-plugins

Install Plugins

# Install stl-generator-toolkit
/plugin install stl-generator-toolkit@ihistand

# Install prd-toolkit
/plugin install prd-toolkit@ihistand

# Restart Claude Code for changes to take effect

Usage Examples

3D Printing

User: I need a jig for cutting 300mm diameter circles for lampshade rings
Claude: /stl-circle-jig
[Generates STL file with specified dimensions, ready for 3D printing]

Plugin Development

This repository follows the Claude Code plugin development best practices:

• Marketplace structure: Root .claude-plugin/marketplace.json defines available plugins
• Plugin organization: Each plugin in its own directory with .claude-plugin/plugin.json
• Skills: Reusable process documentation that enforces discipline
• Commands: Quick-access workflows for common tasks

Repository Structure

claude-plugins/
├── .claude-plugin/
│   └── marketplace.json          # Marketplace definition
├── prd-toolkit/                  # Living PRD: skills, lint scripts, templates
├── stl-generator-toolkit/        # 3D printing STL generator
│   ├── .claude-plugin/
│   │   └── plugin.json           # Plugin configuration
│   ├── skills/                   # stl-generator
│   ├── commands/                 # Slash commands
│   ├── scripts/                  # Pre-built Python scripts
│   ├── references/               # CadQuery patterns & printer specs
│   └── README.md                 # Plugin documentation
└── README.md                     # This file

Author

Ivan Histand - Sr Data Architect

• Email: [email protected]
• GitHub: @ihistand
• LinkedIn: ihistand

License

See individual plugin directories for licensing information.

Contributing

Contributions are welcome! Please open an issue or pull request for:

• Bug fixes
• New features for existing plugins
• New plugin proposals

Related Resources

• GitHub Repository: ihistand/claude-plugins
• Claude Code Documentation
• Plugin Development Guide
• Superpowers Framework