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Sep 30, 2026
ChatGPT plugins can now react to MCP events, with signed webhooks and clear limits
OpenAI's DevDay MCP Events launch lets a plugin start a ChatGPT workflow when its server reports a relevant change. The current integration uses verified, signed webhooks and leaves several mechanisms in the broader draft specification unsupported.
Sep 30, 2026
ChatGPT Sites can host plugins, but each visitor uses their own connection
OpenAI’s DevDay update brings supported plugins into Sites for workspaces. Builders still need to account for admin controls, visitor consent and limits on background access.
Sep 30, 2026
OpenAI updates plugin creation and discovery, but a public listing still needs review
DevDay brought Plugin Creator, clearer submission feedback and new discovery claims. Builders still need to separate a local plugin from a reviewed public listing—and a listing from a recommendation.