AI Plugin Index
MCP Extensions
Verified · npm:@openaiMCP server by openai · updated · ★ 1.1k · 65k downloads a week
OpenAI extensions for MCP servers and apps. MCP Extensions is published by npm:@openai from its verified domain in the official MCP Registry.
Last commit 11 days ago
Apache-2.0: permissive, fine for commercial use
Published package or server URL, 1,090 stars, original repository
Not checked yet. What we check
Install MCP Extensions
Built from the published package, never by AIclaude mcp add mcp-extensions -- npx -y @openai/mcp-extensionsRun in your terminal. Add --scope user to use it in every project.
{
"mcpServers": {
"mcp-extensions": {
"command": "npx",
"args": [
"-y",
"@openai/mcp-extensions"
]
}
}
}Settings, Developer, Edit config. Paste into claude_desktop_config.json and restart.
{
"mcpServers": {
"mcp-extensions": {
"command": "npx",
"args": [
"-y",
"@openai/mcp-extensions"
]
}
}
}Add to ~/.cursor/mcp.json (all projects) or .cursor/mcp.json (this project).
{
"servers": {
"mcp-extensions": {
"command": "npx",
"args": [
"-y",
"@openai/mcp-extensions"
]
}
}
}Add to .vscode/mcp.json. VS Code uses "servers", not "mcpServers".
codex mcp add mcp-extensions -- npx -y @openai/mcp-extensions{
"mcpServers": {
"mcp-extensions": {
"command": "npx",
"args": [
"-y",
"@openai/mcp-extensions"
]
}
}
}Add to ~/.gemini/config/mcp_config.json (all projects) or .agents/mcp_config.json (this project).
gemini mcp add mcp-extensions npx -y @openai/mcp-extensionsGemini 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-extensions block.
Alternatives to MCP Extensions
All alternatives →
Start Claude Code and Codex agents the person can watch, wait for them and read their answers.
Let your users work with their own data through an AI assistant, limited to what they can see.
Gives AI development tools Firebase-specific capabilities and expertise.
MCP server for AI agents: the Quasar documentation and component API, served from the packages installed in your project
Give your AI agents trusted access to the full Postman platform.
Agent-Native Google Slides - generate and edit React presentations
MCP Extensions: common questions
How do I install MCP Extensions?
In Claude Code run claude mcp add mcp-extensions -- npx -y @openai/mcp-extensions. For Claude Desktop, Cursor and VS Code, paste the config shown above and restart. See the install guides.
Is MCP Extensions the official server?
MCP Extensions is published by npm:@openai from its verified domain in the official MCP Registry.
Is MCP Extensions free?
The code is published under the Apache-2.0 licence. The service it connects to may have its own pricing.
Is MCP Extensions safe to use?
It scores 91 of 100. Grades: maintenance A, licence A, quality B. The security check has not run for it yet. Review the code before you install. How grades work.
What are alternatives to MCP Extensions?
Similar MCP servers: Harness, Nhost, firebase-mcp, Quasar MCP.
Does MCP Extensions 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.