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Request to whitelist MCP registry endpoint

Hello PythonAnywhere support team,

I am trying to access an external HTTPS endpoint from my PythonAnywhere account, but I am encountering a proxy error:

Endpoint: https://registry.modelcontextprotocol.io/v0.1/validate

Error: requests.exceptions.ProxyError: HTTPSConnectionPool(host='registry.modelcontextprotocol.io', port=443): Max retries exceeded with url: /v0.1/validate (Caused by ProxyError('Unable to connect to proxy', OSError('Tunnel connection failed: 403 Forbidden')))

Could you please whitelist the domain registry.modelcontextprotocol.io so I can make outbound HTTPS requests to it?

Thank you very much

John4650 | 4 posts | July 28, 2026, 1:55 p.m. | permalink

Use the form linked on this help page.

Staff pafk | 4086 posts | PythonAnywhere staff | July 28, 2026, 2:03 p.m. | permalink