Feature Engineering Toolkit
Feature creation, selection, and transformation tools
- Type
- Plugin
- Repository
- jeremylongshore/tons-of-skills-marketplace
- GitHub stars
- 2.8k
- License
- MIT
- Repo last updated
- Sep 27, 2026
- Version
- 1.23.0
- Author
- Claude Code Plugins
What Feature Engineering Toolkit is
Feature Engineering Toolkit is a plugin published in the jeremylongshore/tons-of-skills-marketplace repository on GitHub, which has about 2.8k stars. The repository describes itself as: “Model-agnostic agent-skills platform with a harness-free canonical layer, verified adapters, and the ccpi package manager. Explore at tonsofskills.com.”
A plugin is a package that bundles skills, slash commands, subagents, hooks, and MCP connectors so they install together. Plugins are plain files with a manifest at .claude-plugin/plugin.json, and they work in both Claude Code and Claude Cowork.
Installing Feature Engineering Toolkit adds everything it ships in one step. Connectors inside a plugin still need to be connected separately, and hooks and subagents only run in Cowork and Claude Code, not in regular chat.
How to install Feature Engineering Toolkit
Claude Code
- Add the repository as a plugin marketplace: claude plugin marketplace add jeremylongshore/tons-of-skills-marketplace
- Install the plugin: claude plugin install feature-engineering-toolkit@<marketplace-name>, using the marketplace name from the repository's .claude-plugin/marketplace.json.
- Restart the session if the new skills or commands don't appear straight away.
Claude Cowork
- Open Customize → Plugins and choose Add marketplace.
- Enter jeremylongshore/tons-of-skills-marketplace (the owner/repo shorthand works for GitHub).
- Find Feature Engineering Toolkit in the list, click Install, then connect any connectors it needs from its Connectors tab.
New to extending Cowork? Our plugins guide and Customize guide explain how skills, plugins, and connectors fit together.
Inside the source file
An excerpt from plugins/ai-ml/feature-engineering-toolkit/.claude-plugin/plugin.json, shared under the repository's MIT license. Read the full file on GitHub.
Feature creation, selection, and transformation tools
Installation
/plugin install feature-engineering-toolkit@claude-code-plugins-plusUsage
/feature-engFeatures
- Automated workflows
- Best practices implementation
- Performance optimization
- Error handling
Requirements
- Python 3.8+
- Standard ML libraries
License
MIT
Before you install
- Read the whole file first. Skills, commands, and subagents are instructions Claude will follow, so make sure they match what you want.
- Check which tools, scripts, or MCP servers it uses. Local servers and scripts run with your permissions.
- Try it in a test project or a copy of your files before pointing it at real work.
- Pin the version you tested, and review changes before updating.
- Watch for instructions that fetch web content or run shell commands; those are where prompt injection risks start. See our prompt injection guide.
FAQ
What is Feature Engineering Toolkit?
Feature Engineering Toolkit is a plugin for Claude Code and Claude Cowork from the jeremylongshore/tons-of-skills-marketplace repository on GitHub. Feature creation, selection, and transformation tools
How do I install Feature Engineering Toolkit in Claude Code?
Add the repository as a plugin marketplace: claude plugin marketplace add jeremylongshore/tons-of-skills-marketplace Install the plugin: claude plugin install feature-engineering-toolkit@<marketplace-name>, using the marketplace name from the repository's .claude-plugin/marketplace.json. Restart the session if the new skills or commands don't appear straight away.
Can I use Feature Engineering Toolkit in Claude Cowork?
Open Customize → Plugins and choose Add marketplace. Enter jeremylongshore/tons-of-skills-marketplace (the owner/repo shorthand works for GitHub). Find Feature Engineering Toolkit in the list, click Install, then connect any connectors it needs from its Connectors tab.
Is Feature Engineering Toolkit safe to install?
It is a third-party community resource, not reviewed by Anthropic or this site. Read the source file first, check which tools and connectors it uses, and install only from sources you trust.
Similar resources
- Lokalise Pack Claude Code skill pack for Lokalise (24 skills) Plugin · jeremylongshore/tons-of-skills-marketplace
- Lumen Owns the measurement layer — North Star definition, input metrics trees, A/B test specs, funnel and cohort analysis that drive product decisions. Use when defining what to track, diagnosing a funnel, or designing an experiment. Trigger with \"define our North Star metric\", \"design an A/B test\". Subagent · jeremylongshore/tons-of-skills-marketplace
- Maintainx Pack Claude Code skill pack for MaintainX CMMS (24 skills) Plugin · jeremylongshore/tons-of-skills-marketplace
- Make Builder Design Make.com scenarios with AI assistance Slash Command · jeremylongshore/tons-of-skills-marketplace
- Figma Pack Claude Code skill pack for Figma (30 skills) Plugin · jeremylongshore/tons-of-skills-marketplace
- Fathom Pack Claude Code skill pack for Fathom (18 skills) Plugin · jeremylongshore/tons-of-skills-marketplace
- File To Code Enhances file reading Skills by generating production-ready code from requirements documents Plugin · jeremylongshore/tons-of-skills-marketplace
- Fairdb Ops Manager Comprehensive operations manager for FairDB managed PostgreSQL service - SOPs, incident response, monitoring, and automation Plugin · jeremylongshore/tons-of-skills-marketplace