GPT-5
MCP server for GPT-5 integration
What is GPT-5?
GPT-5 is a Model Context Protocol (MCP) server that allows AI assistants like Claude, Cursor, and VS Code to mcp server for gpt-5 integration
MCP server for GPT-5 integration
This server falls under the APIs category on MCPgee, the world's largest MCP server directory with 33,000+ servers.
Features
- MCP server for GPT-5 integration
Use Cases
Maintainer
Works with
Installation
Manual Installation
npx gpt5Configuration
Configuration Details
claude_desktop_config.json
Performance
Response Metrics
Resource Usage
How to Set Up and Use GPT-5
The GPT-5 MCP Server bridges OpenAI's GPT-5 model into any MCP-compatible client, exposing a single gpt5_query tool that supports configurable reasoning effort levels, verbosity, integrated web search, and custom system prompts. It is built with TypeScript and can run as a standalone process pointed at any OpenAI-compatible API endpoint.
Prerequisites
- Node.js 18 or later
- pnpm, npm, or yarn package manager
- An OpenAI API key with access to GPT-5 (or compatible model)
- Claude Desktop or another MCP client
Clone the repository
Download the gpt5-mcp-server source code.
git clone https://github.com/gotalab/gpt5-mcp-server.git
cd gpt5-mcp-serverInstall dependencies
Install Node.js packages using pnpm (recommended) or npm.
pnpm install
# or
npm installBuild the server
Compile the TypeScript source to JavaScript.
pnpm run build
# or
npm run buildSet your OpenAI API key
Export the required API key environment variable. Optionally configure the model and reasoning settings.
export OPENAI_API_KEY="sk-..."
export OPENAI_MODEL="gpt-5"
export REASONING_EFFORT="medium" # low | minimal | medium | high
export DEFAULT_VERBOSITY="medium" # low | medium | high
export WEB_SEARCH_DEFAULT_ENABLED="true"Add to Claude Desktop configuration
Register the compiled server in claude_desktop_config.json. Use the absolute path to the dist/cli.js file.
{
"mcpServers": {
"gpt5-mcp": {
"command": "node",
"args": ["/absolute/path/to/gpt5-mcp-server/dist/cli.js"],
"env": {
"OPENAI_API_KEY": "sk-your-key-here",
"OPENAI_MODEL": "gpt-5",
"REASONING_EFFORT": "medium"
}
}
}
}GPT-5 Examples
Client configuration
Claude Desktop config referencing the built CLI entry point with API key and model settings.
{
"mcpServers": {
"gpt5-mcp": {
"command": "/opt/homebrew/bin/node",
"args": ["/Users/you/gpt5-mcp-server/dist/cli.js"],
"env": {
"OPENAI_API_KEY": "sk-your-openai-key",
"OPENAI_MODEL": "gpt-5",
"REASONING_EFFORT": "high",
"DEFAULT_VERBOSITY": "medium",
"WEB_SEARCH_DEFAULT_ENABLED": "false"
}
}
}
}Prompts to try
Example prompts that invoke the gpt5_query tool through Claude.
- "Ask GPT-5 to summarize the latest research on quantum computing"
- "Use GPT-5 with web search enabled to find today's top AI news stories"
- "Send this prompt to GPT-5 with high reasoning effort: prove that P≠NP"
- "Query GPT-5 for a detailed explanation of diffusion models, verbosity high"
- "Ask GPT-5 to review this code snippet and suggest optimizations"Troubleshooting GPT-5
OPENAI_API_KEY not set error on startup
The OPENAI_API_KEY variable must be present in the environment where the server process runs. In Claude Desktop, pass it via the env block in claude_desktop_config.json rather than relying on shell exports.
Build fails with TypeScript errors
Run pnpm install first to ensure all devDependencies including TypeScript are installed. Then run pnpm run build. If errors persist check that your Node.js version is 18 or later with node --version.
gpt5_query returns a model not found error
Set OPENAI_MODEL to a model identifier your API key actually has access to. GPT-5 availability depends on your OpenAI account tier. Try gpt-4o as a fallback while waiting for GPT-5 access.
Frequently Asked Questions about GPT-5
What is GPT-5?
GPT-5 is a Model Context Protocol (MCP) server that mcp server for gpt-5 integration It connects AI assistants to external tools and data sources through a standardized interface.
How do I install GPT-5?
Follow the installation instructions on the GPT-5 GitHub repository. Clone the repo, install dependencies, and add the server config to your AI client.
Which AI clients work with GPT-5?
GPT-5 works with all major MCP-compatible AI clients including Claude Desktop, Claude Code, Cursor, VS Code (GitHub Copilot), Windsurf, and Cline.
Is GPT-5 free to use?
Yes, GPT-5 is open source and available under the MIT license. You can use it freely in both personal and commercial projects.
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Set Up GPT-5 in Your Editor
Choose your AI client for step-by-step setup instructions.
Quick Config Preview
Add this to your claude_desktop_config.json or .cursor/mcp.json
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