extension-mcp
MCP tools for browser extension development: scaffold from 50+ templates, run the dev server with HMR, inspect the live DOM and logs, and build store-ready bundles for Chrome…
Plugin bundle · by Cezar Augusto
About
extension-mcp is a plugin bundle for AI coding tools published by Cezar Augusto. Marketplaces we read that list it: 1 (Community GitHub marketplaces). We first saw it on 2026-10-13 and have recorded no change since. As of our marketplace pass on 2026-10-13.
MCP tools for browser extension development: scaffold from 50+ templates, run the dev server with HMR, inspect the live DOM and logs, and build store-ready bundles for Chrome, Edge, and Firefox.
What it asks for
- Runs on your machine
None of the marketplaces we read publishes its tools or the settings it asks for.
What it declares, asks for and runs, in full
Only install plugins from developers you trust. We list what marketplaces publish and do not test plugins.
Works with
- Claude Code
From the marketplaces that list it and the MCP transport it declares, as each client documents them. We do not test plugins.
Connect
Commands and configs built only from what its marketplaces declare. We do not run them for you and do not test plugins.
As a Claude Code plugin
Built from what Community GitHub marketplaces declares.
/plugin marketplace add extensiondev/mcp
/plugin install extension-mcp@extensiondev-mcp
Where it is published
| Marketplace | Status | Version | Figures | Verified | First seen |
|---|---|---|---|---|---|
| Community marketplace extensiondev/mcp (Open the source on GitHub) | Listed | 10.11.6 | No figure published | Not marked |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
Listed in one community marketplace
| Marketplace | Repository | Stars (GitHub) |
|---|---|---|
| extensiondev-mcp | extensiondev/mcp | 0 |
What the bundle contains
As published on Community GitHub marketplaces.
MCP servers: 1
extension-dev
Commands: 4
extensionextension-addextension-debugextension-publish
What changed
- Became a product we track
- Community GitHub marketplaces: appeared
Possibly the same plugin
Listings that share a signal with this one but not enough for us to treat them as the same product.
Similar plugins
Products whose own names, descriptions, tools and skills are closest in meaning to this one, on every marketplace we read. Closeness is ranked within this list only.
-
mcp io.github.extensiondev/mcp
Build, run, inspect, and publish browser extensions from any MCP client. 32 tools, 13 browsers.
-
Use when scaffolding, validating, testing, or publishing a Manifest V3 Chrome/Edge/Firefox extension. Builds end-to-end with WXT, Plasmo, or CRXJS — service-worker dispatcher…
-
mcp-apps
Generate MCP App widgets for MCP tools. Produces self-contained HTML widgets using the MCP Apps protocol.
-
Complete toolkit for building Model Context Protocol (MCP) servers in TypeScript/Node.js using the official SDK. Includes instructions for best practices, a prompt for generating…
-
Complete toolkit for building Model Context Protocol (MCP) servers in Kotlin using the official io.modelcontextprotocol:kotlin-sdk library. Includes instructions for best…
-
mcpship: check and publish MCP servers
Checks a remote MCP server against the Claude directory rules and guides its publication.
-
firefox-css-theme io.github.easonwong-de/firefox-css-theme
MCP for building, inspecting, and live-debugging Firefox CSS themes.
-
Skills for creating MCP Apps with the MCP Apps SDK
-
Generate MCP server scaffold and tool implementation code from a natural language description. Describe what tools you want in plain language, choose TypeScript or Python, and get…
-
Complete toolkit for building Model Context Protocol (MCP) servers in Go using the official github.com/modelcontextprotocol/go-sdk. Includes instructions for best practices, a…
Similar plugins by marketplace
The same question asked of one marketplace at a time: is there an analog of this plugin there?
Has a listing on Claude Code: claude-plugins-community (5)
-
Use when scaffolding, validating, testing, or publishing a Manifest V3 Chrome/Edge/Firefox extension. Builds end-to-end with WXT, Plasmo, or CRXJS — service-worker dispatcher…
-
Skills for creating MCP Apps with the MCP Apps SDK
-
Generate MCP server scaffold and tool implementation code from a natural language description. Describe what tools you want in plain language, choose TypeScript or Python, and get…
-
Your agent writes the code. Subtext proves it works. MCP tools for verification — persistent knowledge of your app, real-browser checks, and session replays your team can watch…
-
mcp-server io.github.cap-js/mcp-server
Model Context Protocol (MCP) server for AI-assisted development of CAP applications.
Has a listing on Claude Code: claude-plugins-official (5)
-
Skills for creating MCP Apps with the MCP Apps SDK
-
Generate more accurate Terraform and automate workflows for HCP Terraform and Terraform Enterprise
-
Detect an MCP server's language (Python, TypeScript or Go) and instrument it with the matching Pendo SDK so MCP tool calls flow into Pendo Agent Analytics.
-
mcp-server io.github.cap-js/mcp-server
Model Context Protocol (MCP) server for AI-assisted development of CAP applications.
-
mdk-mcp-server io.github.SAP/mdk-mcp-server
Model Context Protocol (MCP) server for AI-assisted development of MDK applications.
Has a listing on Claude: knowledge-work-plugins (5)
-
Create, customize, and manage plugins tailored to your organization's tools and workflows. Configure MCP servers, adjust plugin behavior, and adapt templates to match how your…
-
Keep your coding agent up to date with the latest web best practices
-
Sanity content platform integration with MCP server, agent skills, and slash commands. Query and author content, build and optimize GROQ queries, design schemas, and set up Visual…
-
Build, manage, and deploy Wix sites and apps. CLI development skills for dashboard extensions, backend APIs, site widgets, and service plugins with the Wix Design System, plus MCP…
-
Build and deploy Base44 full-stack apps with CLI project management and JavaScript/TypeScript SDK development skills
Has a listing on Codex: openai-curated (openai/plugins) (5)
-
Qodo setup, code intelligence, and review workflows.
-
Build, run, test, debug, instrument, and implement local macOS apps using Xcode, SwiftUI, AppKit interop, unified logging, and shell-first desktop workflows.
-
Use MagicPath to find, inspect, install, create, and edit UI components from Codex.
-
Official Expo skills for building, deploying, upgrading, and debugging Expo and React Native apps.
-
Build web apps with frontend asset design, browser testing, UI components, payments, and database guidance.
Has a listing on Community GitHub marketplaces (5)
-
mcpship: check and publish MCP servers
Checks a remote MCP server against the Claude directory rules and guides its publication.
-
office-addin-mcp io.github.dsbissett/office-addin-mcp
MCP server for Office add-ins via WebView2/CDP. Provides excel.*, page.*, and addin.* tools.
-
excel-webview2-mcp io.github.dsbissett/excel-webview2-mcp
MCP server for Excel add-ins via WebView2 CDP
-
Let one coding-agent CLI consult another: Codex, Claude Code, OpenCode, Copilot or Antigravity.
-
Browser-side debug layer that exposes live PWA state (DOM, framework state, stores, events, library popups) to AI agents via MCP. Pairs with the optional chrome-devtools-mcp…
Has a listing on Copilot CLI: github/awesome-copilot (5)
-
Complete toolkit for building Model Context Protocol (MCP) servers in TypeScript/Node.js using the official SDK. Includes instructions for best practices, a prompt for generating…
-
Complete toolkit for building Model Context Protocol (MCP) servers in Kotlin using the official io.modelcontextprotocol:kotlin-sdk library. Includes instructions for best…
-
Complete toolkit for building Model Context Protocol (MCP) servers in Go using the official github.com/modelcontextprotocol/go-sdk. Includes instructions for best practices, a…
-
Keep your coding agent up to date with the latest web best practices
-
Complete toolkit for Power Apps Code Apps development including project scaffolding, development standards, and expert guidance for building code-first applications with Power…
Has a listing on Copilot CLI: github/copilot-plugins (5)
-
mcp-apps
Generate MCP App widgets for MCP tools. Produces self-contained HTML widgets using the MCP Apps protocol.
-
code-apps-preview
Build and deploy Power Apps code apps using React, Vite, and Power Platform connectors.
-
Build Power Apps Canvas Apps using the Canvas Authoring MCP server.
-
mobile-app
Build and deploy Power Apps code apps for mobile using Expo (React Native), with native device functionality and Power Platform connectors
-
power-automate
Build, edit, run, and debug Power Automate cloud flows via the FlowAgent MCP server — connection lifecycle, surgical edits, copy across environments, run management, and validated…
Has a listing on Cursor: cursor/plugins (5)
-
Scaffold and validate new agent plugins.
-
Internal team workflows for CI, code review, shipping, local automation, and verification.
-
Build apps, scripts, and automations with the TypeScript SDK.
-
Skills for building on the Cursor Origin API. Fetch the live spec first, then follow the Origin rules for credentials, scopes, webhooks, paging, and errors. Includes a skill that…
-
if you want to go fast, go deep first. pstack helps you write less, but higher quality code. rigorous agent workflows you can parallelize with confidence.
Has a listing on Docker MCP Catalog (5)
-
Generate more accurate Terraform and automate workflows for HCP Terraform and Terraform Enterprise
-
next-devtools-mcp is a Model Context Protocol (MCP) server that provides Next.js development tools and utilities for AI coding assistants.
-
mcp-server-browserbase io.github.browserbase/mcp-server-browserbase
MCP server for AI web browser automation using Browserbase and Stagehand
-
buildkite-mcp-server io.github.buildkite/buildkite-mcp-server
MCP server exposing Buildkite API data (pipelines, builds, jobs, tests) to AI tooling and editors.
-
A MCP server implementation for hyperbrowser.
Has a listing on Official MCP Registry (5)
-
mcp io.github.extensiondev/mcp
Build, run, inspect, and publish browser extensions from any MCP client. 32 tools, 13 browsers.
-
mcpship: check and publish MCP servers
Checks a remote MCP server against the Claude directory rules and guides its publication.
-
firefox-css-theme io.github.easonwong-de/firefox-css-theme
MCP for building, inspecting, and live-debugging Firefox CSS themes.
-
office-addin-mcp io.github.dsbissett/office-addin-mcp
MCP server for Office add-ins via WebView2/CDP. Provides excel.*, page.*, and addin.* tools.
-
MCP server wrapping the m-dev-tools catalog: route_intent, describe, verify.
Found by meaning, not by shared code or a shared repository: similar plugins stay separate products, and this is not a review or a recommendation.
Is this your plugin?
Add it to your projects and prove you maintain it with a file in its repository, a file on your domain or a DNS record. You get alerts when a marketplace lists it, drops it, changes its verified mark or what it asks for, and its remote endpoint goes on monitoring as a web service.
Data comes from public marketplace files in GitHub repositories of their authors. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.