Custom GPTs deprecation leaves AWS-API power users stranded in MCP migration
pudgypanda69 · reddit · 2026-10-02
A daily Custom GPT user reports that after deprecation, custom API calls (his GPT pulled Strava runs via AWS API Gateway and Lambda) are largely gone. He set up an MCP server but found the functionality locked and couldn't even locate Developer Mode, highlighting real friction for power users in OpenAI's migration.
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