Plugins, MCP, Skills at @OpenAI. Prev Director of Engineering @Shopify, co-founder and CEO @Stellate (acq. by Shopify), co-creator of styled-components.

San Francisco, CA
Joined April 2014
Max Stoiber retweeted
MCP Apps ❤️ WebMCP Great job by @ndmccormack , @mxstbr and the ChatGPT team! This is the future of interfaces, the chat can now interact directly with MCP Apps, using WebMCP. Making the agentic web seamless ✨
I'm excited to share that WebMCP is now enabled for MCP Apps in ChatGPT Desktop! 🚀 @OpenAI is also collaborating with modelcontextprotocol.io to make WebMCP the default way for agents to interact with MCP Apps. Another big step toward a more seamless agentic web!
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Max Stoiber retweeted
I'm excited to share that WebMCP is now enabled for MCP Apps in ChatGPT Desktop! 🚀 @OpenAI is also collaborating with modelcontextprotocol.io to make WebMCP the default way for agents to interact with MCP Apps. Another big step toward a more seamless agentic web!
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"Almost exactly a month ago, Foursquare was acquired, marking the end of a 17-year story that started around my kitchen table in the East Village in 2009. The Foursquare acquisition was a $0 outcome for equity holders – $0 for preferred, $0 for common. It’s bittersweet to see these details surface publicly – at least now there’s an opportunity to comment on them." Man. teendrama.substack.com/p/som…
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Max Stoiber retweeted
I’ve been getting a ton of DMs and emails about plugin submissions. Sorry if I haven’t replied to yours yet. We love seeing all the ways you’re making ChatGPT & Codex more useful! We nearly doubled reviews last week, but submissions are outpacing us. Thanks for your patience 🙏
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the chatgpt plugins team is coming to MCPcon in san jose this week! ✋ we'll be giving a few talks and you'll see many of us roam around the conference. come hang out, talk MCP, chatgpt plugins, submissions (🙈), and show us what you’re building. we’re also hosting a happy hour on oct 22, 8–10pm. even if you're not going to the conf, come hang out with us: luma.com/oai-hh-mcpcon
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one week later: good news and bad news on chatgpt plugin submissions. 👍 good news: we've nearly doubled how many reviews we completed this week by tweaking our reviewer setup, so many more of you have heard back from us. 👎 bad news: our backlog is still growing because submissions have kept growing exponentially. i said we'd catch up to the backlog in a week. we haven't, and i'm sorry to all of you who are still waiting. we've now started fundamentally rethinking how we review plugins so we can deal with this new plethora of plugins, but it'll take some time to get it done. thanks for bearing with us 💖 i will keep updating you all as the situation evolves.
let's talk about submissions. since the beginning of the year, chatgpt plugin submissions have increased by almost 10x. then, since the explosion of interest in plugins after devday, they 3x'ed again! 🤯 it's been really difficult for our review team to keep up, and it shows in the review times. right now, the eta for you to hear back from us is about 2 weeks – that's too long! so, we've declared a temporary code red. we're relaxing some of our nice-to-have requirements so that we can increase throughput. it's going to take us about one week to catch up with our backlog, so if you have submitted so far you'll hear back in the next days. we're also: 1. going to show the eta in the submission portal so at least you know when you'll hear back from us 2. working on automating more review checks so you get immediate feedback without having to wait for our review team 3. taking another look at the requirements to make sure we check for only the most critical things to keep our users safe keep building plugins and keep submitting them; we're hard at work making that a great experiencer. thanks for bearing with the team. more context in the video:
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Max Stoiber retweeted
People don’t understand. This is chat on web accessing your actual tabs on chrome via the extension.
A few big upgrades for Chrome users today! We’re bringing the power of computer use to anyone who uses Chrome. First up: ChatGPT can now use your tabs in Chrome to make answers more useful and get things done for you. If you’re in Chat, it can look across your open tabs and gather info. If you’re in Work, ChatGPT can control your Chrome tabs to get things, like sending messages, filling out forms, or downloading files. It can even help you organize and group that pile of tabs you have open.
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Max Stoiber retweeted
MCP Events are now available in AI SDK. Build agents that react to updates from MCP servers. Discover events and subscribe to them with AI SDK, while Vercel Connect handles subscription storage, renewals, and verified delivery.
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crazy: my dot noticed my main email domain's SPF record was invalid i don't even know why it was looking at that since my email's been fine! it then fixed it by making the change in @vercel – without me having to think about anything 🫪
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Max Stoiber retweeted
3/ MCP’s latest spec included Apps, so we used this launch as a chance to bring Mercury’s UX into chat products. That means alongside text, you’ll see accounts, transactions, and payments show up as tables like what you’d see in Mercury Command.
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Max Stoiber retweeted
ChatGPT Sites + MCP Events + dots is a really fun combination. Here’s a toy example: I submit an image request through a Site → the Site sends an MCP event → my dot picks it up and generates the image. Imagine the same flow for bug reports, support requests, or new sales leads. Build a Site around your workflow, send updates to your dot, and tell it what to do when they arrive. @OpenAIDevs
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Max Stoiber retweeted
Introducing Expand Fetch, a new way to scrape and crawl the web. Your agent has never seen the web. No wonder it gets basic questions wrong. Traditional Markdown APIs lose critical details. So we trained two System one models to change that: Iris, a vision model that sees pages like you do, preserving tables, icons, and layouts. X-Ray, a JSON model that uncovers the hidden data behind every page. Every fetch also comes with a Wayback Machine. Every line links back to its source, so you can verify exactly what your agent saw. Three products. One API. On our benchmark of 1,094 questions across 326 challenging web pages, agents using Expand got 74% right. The next best API got 55%. Available today at $1 per 1,000 fetches. Try it at expand.ai
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mcp-extensions just crossed 1k github stars! today, we're shipping v0.2 with support for: · editable drafts in new or existing conversations via ui/message { send: false } · multi-round-trip forms: tools return a form, then resume with the user's answers in a fresh call · MCP SDK 2 and simpler imports · DRM-protected video support inside extensions · faster extension launches · a draggable composer you can move out of your app’s way · support for viewing your chat history without leaving a fullscreen widget · lots of fixes for stale drafts, layout jumps, app launches, connection setup, and widget reloads what should we ship next? 👀 github.com/openai/mcp-extens…
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We discovered a sophisticated recording device that was hidden inside one of our offices. We used our models to understand the device and where it had come from, identifying that a specific employee had planted it a few days earlier. We referred the matter to the FBI, and we’re grateful to the agents and prosecutors who moved quickly to make an arrest. The FBI’s investigation is ongoing and we will continue to support their work. At this time, we have no indications of this individual inappropriately accessing or exfiltrating model weights, source code, or customer data. The employee was terminated. We take protecting our technology, data, and people seriously, and as a matter of national importance. Our security program is designed to protect against a wide range of threat actors, from insider risks to cybercriminals to nation states, and this case is an example of how AI can help address these sophisticated security threats.
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mcp events are incredible. your users can set up their agents to listen to events in your system, enabling them to do proactive work whenever things happen without any user input. implement it in your mcp servers!
Cloudflare MCP Server can now ping your agents for new issues on your Workers. Powered by @thomas_ankcorn new real-time issues and the draft MCP Event spec
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Max Stoiber retweeted
Cloudflare MCP Server can now ping your agents for new issues on your Workers. Powered by @thomas_ankcorn new real-time issues and the draft MCP Event spec
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Max Stoiber retweeted
With plugin extensions, I can customise my Codex desktop app. Google cal feels a bit too cluttered for me, so I built a simpler focused month and day view, exactly how I like it. Software for n=1
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