app

Shopping Cart (Apps SDK example)

Keeps cart state in sync across tool calls with widgetSessionId

.mdOpen in ChatGPT

A Python MCP server showing how _meta["widgetSessionId"] carries widgetState between tool calls so the model and widget share the same shopping cart. UI actions like changing quantities feed back into shared state so the assistant sees the latest cart.

Also available as

Codex SecuritySecurity scanning for your codebaseplugin · by OpenAI · 7.2k starsOpenAI Docs MCPSearch and read OpenAI's developer documentation from Codex or any MCP clientMCP server · by OpenAI · Remote

How to use

  1. 1Add it in ChatGPT

    Open Shopping Cart (Apps SDK example) in ChatGPT's Plugin directory (sidebar → Plugins, then search), select + to add it and sign in if asked.

  2. 2Use it in a chat

    Type @ in the composer and pick Shopping Cart (Apps SDK example), or start your message with its name. ChatGPT may also suggest it when it fits what you ask.

Things to ask

  • “Add two coffees and a croissant to my cart”
  • “Increase the croissants to three”
  • “What is in my cart right now?”

Related

GitHubTriage PRs, issues and CI across your repositoriesapp · by OpenAIFigmaCreate designs, diagrams and FigJam boards and ship them to codeapp · by Figma, Inc.MCP App Basics (Apps SDK example)Eleven interactive widgets that each teach one MCP Apps APIapp · by OpenAI · 2.4k starsCards Against AI (Apps SDK example)Card game driven by ChatGPT with a real-time synced widgetapp · by OpenAI · 2.4k starsAuthenticated Server (Apps SDK example)Demonstrates tools that require different levels of OAuthapp · by OpenAI · 2.4k starsKitchen Sink Lite (Apps SDK example)Minimal widget + server showing the full window.openai surfaceapp · by OpenAI · 2.4k stars