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<h1><strong> TLDR Dev <span id="date">2026-10-01</span></strong></h1>
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OpenAI MCP Extensions adds ChatGPT-specific capabilities for plugins, including sidebar entry points, file handlers, composer mentions, and richer forms. The repository provides TypeScript and Python SDKs, a specification, documentation, and a Bits & Bolts example under the Apache 2.0 license.
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Pi adopted MCP after Codemode made tool composition practical inside a JavaScript sandbox, while arguing that structured data and smarter discovery are still needed for the protocol to reach its potential.
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