Development Tools
Software development utilities: MCP servers, bookmarklets, frameworks, patching, and environment validation.
- Type
- Plugin
- Repository
- oaustegard/claude-skills
- GitHub stars
- 150
- License
- MIT
- Repo last updated
- Sep 25, 2026
- Version
- 1.2.1
What Development Tools is
Development Tools is a plugin published in the oaustegard/claude-skills repository on GitHub, which has about 150 stars. The repository describes itself as: “My collection of Claude skills”
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 Development Tools 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 Development Tools
Claude Code
- Add the repository as a plugin marketplace: claude plugin marketplace add oaustegard/claude-skills
- Install the plugin: claude plugin install development-tools@<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 oaustegard/claude-skills (the owner/repo shorthand works for GitHub).
- Find Development Tools 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
We couldn't retrieve the source file for this entry. Browse the repository on GitHub to find it and read the README before installing.
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 Development Tools?
Development Tools is a plugin for Claude Code and Claude Cowork from the oaustegard/claude-skills repository on GitHub. Software development utilities: MCP servers, bookmarklets, frameworks, patching, and environment validation.
How do I install Development Tools in Claude Code?
Add the repository as a plugin marketplace: claude plugin marketplace add oaustegard/claude-skills Install the plugin: claude plugin install development-tools@<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 Development Tools in Claude Cowork?
Open Customize → Plugins and choose Add marketplace. Enter oaustegard/claude-skills (the owner/repo shorthand works for GitHub). Find Development Tools in the list, click Install, then connect any connectors it needs from its Connectors tab.
Is Development Tools 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.
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