OpenAI MCP Extensions
Officialby OpenAI
Official listing: built and published by OpenAI. More from OpenAI
Extends MCP servers and apps with ChatGPT-native features like sidebar entrypoints, file handlers, and composer mentions, for plugin developers.
Skills
App Entrypoints
Lets users open a plugin's MCP App from the ChatGPT sidebar or from a thread, including through deep links.
File Extension Handlers
Renders custom file viewers when users open a supported file type, with resource reads and writes.
Composer Mentions
Lets users search a plugin's resources from the composer and attach references to a message.
Form Elicitation
Extends MCP elicitation with thumbnails, option descriptions, suggested values, and resource selection.
Structured Settings
Exposes plugin settings that ChatGPT can read and update through a structured schema.
Related Agents
AgentOps for Apify Builders Bundle
Apify actor bundle for agent builders: normalize run traces for QA, control costs, and guard tool calls with a firewall…
OpenSandbox
Runs AI-agent workloads in isolated Docker or Kubernetes sandboxes, exposing sandbox lifecycle, command, filesystem, an…
OpenAI Agents SDK
Python framework for building multi-agent systems with handoffs, guardrails, and tool use — the official OpenAI agent o…
AgentMail
Email inbox API built for AI agents. Create, send, receive, search, and manage email programmatically with SDKs for Pyt…