Nimbalyst Extension Development

Nimbalyst Extension Development is an Automation skill for Claude Code, published by nimbalyst in nimbalyst.

1.5K stars212 forkson nimbalyst/nimbalystAdded 2026/08/19+3% in starsRepository updated 2026/08/19

agentic-aiai-agentsclaude-codecodexcoding-agentdeveloper-toolsidemarkdown-editormcpmulti-agent-systemsopencodewysiwyg-editor

Install in seconds

Install Nimbalyst Extension Development

Copy Nimbalyst Extension Development into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/nimbalyst/nimbalyst/tree/main/packages/extensions/extension-dev-kit/claude-plugin/skills/extension-development ~/.claude/skills/extension-development

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/nimbalyst/nimbalyst.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: packages/extensions/extension-dev-kit/claude-plugin/skills/extension-development/SKILL.md in nimbalyst/nimbalyst
Installs to: ~/.claude/skills/extension-development
Collection: One of 7 skills cataloged from this repository
Category: Automation — 1523 skills

What Nimbalyst Extension Development does

Nimbalyst Extension Development builds, installs, and hot-reloads Nimbalyst extensions using MCP tools. Use it when developing, testing, or iterating on Nimbalyst extensions.

Nimbalyst Extension Development is cataloged under Automation on DirSkills. Nimbalyst Extension Development comes from a repository tagged agentic-ai, ai-agents, claude-code, codex and coding-agent.

Documentation

README

Excerpt

Extension Development in Nimbalyst

Nimbalyst provides MCP tools for building, installing, and hot-reloading extensions directly from within the running app. This enables rapid iteration on extension development without manually running build commands.

The recommended in-app scaffold flow uses File > New Extension Project, Developer > New Extension Project, or the Extension Developer Kit's /new-extension command. Enable Extension Dev Tools in Settings > Advanced before using the build/install workflow.

Available MCP Tools

Build Extension

mcp__nimbalyst-extension-dev__extension_build

Runs npm run build (vite build) on an extension project.

Parameters:

path: Absolute path to the extension project root (directory containing package.json and manifest.json)

This is the opening of the README. Read the full README on GitHub.

Commands Nimbalyst Extension Development provides

Slash commands named in this skill’s SKILL.md, listed in the order they first appear.

/new-extension

Frequently asked about Nimbalyst Extension Development

What else does nimbalyst publish alongside Nimbalyst Extension Development?
Nimbalyst Extension Development is one of 7 skills that DirSkills catalogs from nimbalyst/nimbalyst, the repository it ships in. Its siblings there include DataModelLM, Excalidraw and Feedback Intake. Each one is a separate skill with its own page in this directory, installs the same way Nimbalyst Extension Development does, and is maintained by nimbalyst in that same repository. The rest of the collection is listed on the nimbalyst/nimbalyst page.
How does Nimbalyst Extension Development compare to other Automation skills?
Nimbalyst Extension Development ranks #588 by stars among the 1523 Automation skills in this catalog. The most-starred ones next to it are Autonomous Loops, Autonomous Agent Harness and Automation Audit Ops. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of Nimbalyst Extension Development against them. Open each page to compare what they document and how they install.