This MCP server allows you to access OpenAI's ChatGPT API directly from Claude Desktop.
Most developer tooling work still happens through a UI a human drives. MCP Chatgpt Responses MCP server moves it into the conversation instead. This MCP server allows you to access OpenAI's ChatGPT API directly from Claude Desktop.
The server publishes 2 tools. What each one is for:
Prerequisites — The Prerequisites tool exposed by this serverInstallation — 1. Clone this repository: bash git clone https://github.com/billster45/mcp-chatgpt-responses.git cd mcp-chatgpt-responsesConfiguration is passed through the environment: OPENAI_API_KEY, DEFAULT_MODEL, DEFAULT_TEMPERATURE, MAX_TOKENS. Treat anything key-shaped as a real credential — scope it to the minimum the server needs, and rotate it if it ever lands in a shared config.
The server ships on npm as @smithery/cli, so your MCP client can launch it on demand — there is no separate build step. Add the server block to your client's configuration, restart it, and the tools register themselves.
This sits in the developer tooling group, where several servers overlap in what they claim to do but differ sharply once you actually set them up. MCP Chatgpt Responses's toolset — Prerequisites, Installation — is a fair guide to whether it matches your workflow. It is maintained by billster45; worth a glance at recent repository activity before you build anything load-bearing on it.
We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.
| Tool | What it does |
|---|---|
| Prerequisites | The Prerequisites tool exposed by this server. |
| Installation | 1. Clone this repository: bash git clone https://github.com/billster45/mcp-chatgpt-responses.git cd mcp-chatgpt-responses |
{
"mcpServers": {
"chatgpt-responses": {
"command": "npx",
"args": ["-y", "@smithery/cli"],
"env": {
"OPENAI_API_KEY": "your-value",
"DEFAULT_MODEL": "your-value",
"DEFAULT_TEMPERATURE": "your-value",
"MAX_TOKENS": "your-value"
}
}
}
}Add to claude_desktop_config.json, then restart Claude Desktop.
| Variable | Description | Required |
|---|---|---|
| OPENAI_API_KEY | Credential the server authenticates with. | Yes |
| DEFAULT_MODEL | Configuration value read at startup. | Optional |
| DEFAULT_TEMPERATURE | Configuration value read at startup. | Optional |
| MAX_TOKENS | Credential the server authenticates with. | Yes |
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