OpenAI open-sources mcp-extensions to make plugins feel native to ChatGPT
SIGKITTEN · x · 2026-11-11
OpenAI released mcp-extensions on GitHub (1.1k stars on day one), a project that adds ChatGPT-specific capabilities on top of MCP so developers can build plugins that feel like first-class native features rather than bolted-on tools.
Notably, the post comes via mxstbr quoting Claude's newly launched interactive connectors, which let users open full versions of tools like Adobe, Atlassian, and Box inside Claude and edit alongside the conversation. Screenshots also show Claude Docs' MCP Apps documentation referencing an openai/ui key for marking global entry points — a sign the two vendors' plugin architectures are technically intertwined.
For developers, this marks MCP's evolution from tool calls toward native app UIs: whichever platform makes MCP plugins first-class citizens wins developer mindshare.
Related event: OpenAI Open-Sources MCP Extensions for Native ChatGPT Plugin Capabilities(2 posts)→
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