Plugin

B12 Claude Plugin

B12 Website Generator plugin allows you to create a professional, engaging, and user-friendly website in seconds using AI. To create a website, you need to provide a name for your project/business, along with a description of the project/business (goals, structure, etc.).

Type: Plugin
Repository: jeremylongshore/tons-of-skills-marketplace
GitHub stars: 2.8k
License: MIT
Repo last updated: Sep 27, 2026
Source file: plugins/community/b12-claude-plugin/.claude-plugin/plugin.json
Version: 1.9.0
Author: B12.io

What B12 Claude Plugin is

B12 Claude Plugin 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 B12 Claude Plugin 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 B12 Claude Plugin

Claude Code

Add the repository as a plugin marketplace: claude plugin marketplace add jeremylongshore/tons-of-skills-marketplace
Install the plugin: claude plugin install b12-claude-plugin@<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 B12 Claude Plugin 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/community/b12-claude-plugin/.claude-plugin/plugin.json, shared under the repository's MIT license. Read the full file on GitHub.

Plugin: b12-claude-plugin | Skill: website-generator

B12 Website Generator is a plugin by B12.io that allows you to create a professional, engaging, and user-friendly website in seconds using AI. Provide a name for your project or business along with a brief description _(goals, structure, etc.)_ and Claude handles the rest.

What It Does

The b12-claude-plugin ships a single auto-activating skill (website-generator). Claude uses this skill to gather a business name and description from the user, then generates a pre-populated B12 signup link that instantly drafts a production-ready website.

Installation

Claude.ai

Download the website-generator.zip file
Go to claude.ai > Settings > Skills
Upload the zip file

Claude Code

claude --plugin-dir /path/to/b12-claude-plugin

Claude Cowork

Install through the plugin manager in Claude Desktop.

Usage

"Create a website for my consulting firm"
"Create a website for a software development agency"
"Create a personal website"
"Create a website for a cat café"

Claude will automatically generate a link to a production-ready website. Click it to sign up and publish for free.

Skills

Source

Maintained by B12.io. Source: https://github.com/b12io/b12-claude-plugin

License

Apache-2.0

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 B12 Claude Plugin?

B12 Claude Plugin is a plugin for Claude Code and Claude Cowork from the jeremylongshore/tons-of-skills-marketplace repository on GitHub. B12 Website Generator plugin allows you to create a professional, engaging, and user-friendly website in seconds using AI. To create a website, you need to provide a name for your project/business, along with a description of the project/business (goals, structure, etc.).

How do I install B12 Claude Plugin 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 b12-claude-plugin@<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 B12 Claude Plugin in Claude Cowork?

Open Customize → Plugins and choose Add marketplace. Enter jeremylongshore/tons-of-skills-marketplace (the owner/repo shorthand works for GitHub). Find B12 Claude Plugin in the list, click Install, then connect any connectors it needs from its Connectors tab.

Is B12 Claude Plugin 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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Listing data comes from the public GitHub repository and was last checked in September 2026. Excerpts are © their authors and shared under MIT. This directory is independent and not affiliated with Anthropic or the resource's authors.