AI Plugin Index
mcp
CommunityMCP server by extensiondev · updated · ★ 0 · 851 downloads a week
Build, run, inspect, and publish browser extensions from any MCP client. 35 tools, 13 browsers. mcp is a community project by extensiondev, not verified by a company domain.
Last commit in the past day
Apache-2.0: permissive, fine for commercial use
Clear description, published package or server URL, original repository
Not checked yet. What we check
Install mcp
Built from the published package, never by AIclaude mcp add mcp -- npx -y @extension.dev/mcpRun in your terminal. Add --scope user to use it in every project.
{
"mcpServers": {
"mcp": {
"command": "npx",
"args": [
"-y",
"@extension.dev/mcp"
]
}
}
}Settings, Developer, Edit config. Paste into claude_desktop_config.json and restart.
{
"mcpServers": {
"mcp": {
"command": "npx",
"args": [
"-y",
"@extension.dev/mcp"
]
}
}
}Add to ~/.cursor/mcp.json (all projects) or .cursor/mcp.json (this project).
{
"servers": {
"mcp": {
"command": "npx",
"args": [
"-y",
"@extension.dev/mcp"
]
}
}
}Add to .vscode/mcp.json. VS Code uses "servers", not "mcpServers".
codex mcp add mcp -- npx -y @extension.dev/mcp{
"mcpServers": {
"mcp": {
"command": "npx",
"args": [
"-y",
"@extension.dev/mcp"
]
}
}
}Add to ~/.gemini/config/mcp_config.json (all projects) or .agents/mcp_config.json (this project).
gemini mcp add mcp npx -y @extension.dev/mcpGemini CLI was replaced by Antigravity CLI in June 2026 and remains only for enterprise licences and paid API keys.
MCP servers run with your permissions and can read what you give them access to. Some need an API key: check the README and add it under env in the mcp block.
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mcp: common questions
How do I install mcp?
In Claude Code run claude mcp add mcp -- npx -y @extension.dev/mcp. For Claude Desktop, Cursor and VS Code, paste the config shown above and restart. See the install guides.
Is mcp the official server?
mcp is a community project by extensiondev, not verified by a company domain.
Is mcp free?
The code is published under the Apache-2.0 licence. The service it connects to may have its own pricing.
Is mcp safe to use?
It scores 81 of 100. Grades: maintenance A, licence A, quality C. The security check has not run for it yet. Review the code before you install. How grades work.
What are alternatives to mcp?
Similar MCP servers: browser-use, Actionbook, Cline, Scrapling MCP Server.
Does mcp work with ChatGPT?
Not directly. It runs locally, and ChatGPT only connects to remote servers with a URL. Use it in Claude Code, Claude Desktop, Cursor, VS Code or Codex.