# Plugins

> For the complete documentation index, see [llms.txt](/llms.txt). Markdown versions of documentation pages are available by appending `.md` to the page URL.

> Build and publish plugins with skills, MCP servers, and optional UI.

Use this as a lightweight map for AI tools. Each Plugins page has a Markdown twin at `/plugins/<slug>.md` for direct ingestion.

## Documentation sets
- [Combined Plugins docs](https://developers.openai.com/plugins/llms-full.txt): Single-file Markdown export of the Plugins docs.
- [Plugin UI reference (Markdown)](https://developers.openai.com/plugins/reference.md): Schema and API fields for tools, resources, and components.

## App Guidelines
- [Plugin guidelines](https://developers.openai.com/plugins/app-guidelines.md): Requirements for MCP servers and optional UI in published plugins.

## Build
- [Add UI to your MCP server](https://developers.openai.com/plugins/build/chatgpt-ui.md): Return optional UI resources from selected MCP tools.
- [Authentication](https://developers.openai.com/plugins/build/auth.md): Authentication patterns for plugin MCP servers.
- [Build an MCP server](https://developers.openai.com/plugins/build/mcp-server.md): Add live data and controlled tools to your plugin.
- [Build skills](https://developers.openai.com/plugins/build/skills.md): Add repeatable workflows around your plugin's MCP tools.
- [Checkout API reference](https://developers.openai.com/plugins/build/monetization.md): Implement checkout from optional plugin UI.
- [Examples](https://developers.openai.com/plugins/build/examples.md): End-to-end examples of MCP servers with optional UI.
- [MCP server and UI quickstart](https://developers.openai.com/plugins/build/app-quickstart.md): Build an MCP server for ChatGPT and Codex, with optional UI in ChatGPT.
- [Package your plugin](https://developers.openai.com/plugins/build/plugins.md): Assemble skills and MCP server dependencies into a distributable plugin.

## Concepts
- [MCP server](https://developers.openai.com/plugins/concepts/mcp-server.md): Understand how an MCP server gives a plugin tools and access to external systems.
- [Plugin architecture](https://developers.openai.com/plugins/concepts/plugins.md): Understand how plugins combine skills, MCP servers, and optional UI.
- [Skills](https://developers.openai.com/plugins/concepts/skills.md): Understand how skills add repeatable workflows around MCP tools.
- [UI guidelines](https://developers.openai.com/plugins/concepts/ui-guidelines.md): Guidelines for designing optional plugin UI in ChatGPT.

## Deploy
- [Connect and test your plugin](https://developers.openai.com/plugins/deploy/connect-chatgpt.md): Test an optional MCP server, then package and evaluate the complete plugin.
- [MCP server review requirements](https://developers.openai.com/plugins/deploy/app-review.md): Prepare a plugin's MCP server and optional UI for public review.
- [Plugin submission errors](https://developers.openai.com/plugins/deploy/submission-errors.md): Find and fix validation errors for plugins submitted to the public directory
- [Submit plugins](https://developers.openai.com/plugins/deploy/submission.md): Submit, publish, and maintain a plugin through the OpenAI Platform
- [Troubleshooting](https://developers.openai.com/plugins/deploy/troubleshooting.md): Troubleshoot plugin tools and optional UI.

## Guides
- [Local services Get Quote conversion spec](https://developers.openai.com/plugins/guides/local-services-request-quote-conversion-spec.md): Contract for integrating a local services quote-request plugin into ChatGPT's conversion flow.
- [Optimize Metadata](https://developers.openai.com/plugins/guides/optimize-metadata.md): Improve discovery and behavior with rich metadata.
- [Product checkout conversion spec](https://developers.openai.com/plugins/guides/product-checkout-conversion-spec.md): Contract for integrating a product checkout plugin into ChatGPT's conversion flow.
- [Restaurant reservation conversion spec](https://developers.openai.com/plugins/guides/restaurant-reservation-conversion-spec.md): Contract for integrating a restaurant reservation plugin into ChatGPT's Reserve flow.
- [Security & Privacy](https://developers.openai.com/plugins/guides/security-privacy.md): Security and privacy considerations for plugins.
- [Submit your Claude Code plugin to OpenAI](https://developers.openai.com/plugins/guides/submit-claude-plugin.md): Convert a Claude Code plugin or connector into a plugin you can submit to OpenAI.

## Plan
- [Brainstorm plugin use cases](https://developers.openai.com/plugins/plan/use-case.md): Decide what people should be able to accomplish with your plugin.
- [Define tools](https://developers.openai.com/plugins/plan/tools.md): Translate plugin use cases into a focused MCP tool surface.

## Quickstart
- [Quickstart](https://developers.openai.com/plugins/quickstart.md): Connect an MCP server and test the resulting plugin in ChatGPT Work.

## Reference
- [Reference](https://developers.openai.com/plugins/reference.md): Reference for ChatGPT-specific UI extensions and metadata.