ChatGPT & OpenAI API

OpenAI API (Responses API)

You can give any OpenAI-powered application access to Docsumo via the hosted MCP tool in the Responses API (replace YOUR_API_KEY):

from openai import OpenAI

client = OpenAI()
response = client.responses.create(
    model="gpt-5",
    tools=[{
        "type": "mcp",
        "server_label": "docsumo",
        "server_url": "https://mcp.docsumo.com/mcp",
        "headers": {"Authorization": "Bearer YOUR_API_KEY"},
        "require_approval": "never",
    }],
    input="List my Docsumo documents that are still in review.",
)
print(response.output_text)

ChatGPT app

ChatGPT custom connectors (Settings → Connectors, with developer mode enabled) currently authenticate remote MCP servers with OAuth only — they can't attach an API-key header, so the ChatGPT app can't connect to Docsumo MCP yet. ChatGPT support will arrive with OAuth sign-in for Docsumo MCP; until then, use the Responses API above or one of the other supported clients.

Having trouble? See FAQ & troubleshooting.