Slides: MCP Apps: Primitives, discovery, and the Future of Software - Pietro Zullo, Manufact, Inc

Source Video

MCP Apps: Primitives, discovery, and the Future of Software - Pietro Zullo, Manufact, Inc

Relationship To World's Fair 2026

These slides are extracted from a public AI Engineer YouTube video connected to World's Fair 2026. Speaker-matched clips are supporting context unless later confirmed as exact session recordings; official livestream recordings are day-level/event-level source material.

Related Scheduled Sessions

No individual scheduled session mapping has been assigned yet; treat this as an event livestream deck.

Extracted Slides

Recreated text/layout view: open HTML recreation
AI slide classifier: title_card confidence 0.99
Text source: agent_vision.

Slide text:

Primitives, discovery, and why this is how all software will be used

Recreated text/layout view: open HTML recreation
AI slide classifier: title_card confidence 0.99
Text source: agent_vision.

Slide text:

You know MCP. Do you know MCP Apps?

Recreated text/layout view: open HTML recreation
AI slide classifier: content_slide confidence 0.97
Text source: advanced OCR rapidocr-live/border-trim/contrast.
OCR decision: ready — Diagram/product slide with multiple small labels and embedded screenshots; OCR will likely capture them more reliably than manual transcription.

Slide text:

Manufact WHATWEBUILD

Open-source SDKs and dev tools for MCP

mcp-use to build Inspector to test Manufact to ship

8M+ OOWNLOADS lOk Githu& Stars GITHUB.

MANUFACT.COM

Recreated text/layout view: open HTML recreation
AI slide classifier: content_slide confidence 0.98
Text source: advanced OCR rapidocr-live/border-trim/opencv-adaptive.
OCR decision: ready — Chart slide with small axis labels and source text; OCR is useful for accurate capture.

Slide text:

Manufact ADOPTION

Apps are landing in the stores, fast

ChatGPT apps & Claude connectors over time CUHULATIVE COUNT

800

660

200 18 2000000I

W4. W& R. wo w3 WH w5 w6 W7?

[ ChatGpT opp Cord+ corrtcton

SOurCE: AppdiSCoveraeIlity.CoH

MANUPACT.COn

Recreated text/layout view: open HTML recreation
AI slide classifier: content_slide confidence 0.98
Text source: advanced OCR rapidocr-live/bright-screen/opencv-adaptive.
OCR decision: ready — Architecture diagram with several small labels and explanatory text; OCR should recover the relationships and labels well.

Slide text:

Manufact ARCHITECTURE

How anMCP Appworks

rtoorr, cobg tooa. Model comersat icn ChatGeT:Covde·Curror Host resources/resd tools/t+ll -. looly+vijlreources MCP srvr

ui/+ over posthessage

Widgrt

+woy, prroapuos

The server cxposes the Ul as a ui: / /resourc+. The host rondors lt ln a sardboxed iframe and

relays tool input, resuits, and the widget's cals bock over JSON.RPC.

HAHUFACT:COn jinn

Recreated text/layout view: open HTML recreation
AI slide classifier: content_slide confidence 0.97
Text source: agent_vision.

Slide text:

Rendered by the host, inline

Recreated text/layout view: open HTML recreation
AI slide classifier: title_card confidence 0.99
Text source: agent_vision.

Slide text:

Interaction primitives

The ui/* methods the widget and host exchange.

Recreated text/layout view: open HTML recreation
AI slide classifier: content_slide confidence 0.98
Text source: advanced OCR rapidocr-live/bright-screen/contrast.
OCR decision: ready — Contains code and embedded UI text that are better handled by OCR.

Slide text:

Manufact PRINITIVE2

ui/message

The App talks back into the conversation,

unprompted. A click in the Ul posts a

message as if the user sent it.

5129Ugn

Chndstrise2

const(sendFollowUpMessage)=usewidget（); sendFollowUpMessage("Add the Teapo Racer"); TerrpoRocee

Oifyuyp

Repy

MANUFACT.COM

Recreated text/layout view: open HTML recreation
AI slide classifier: content_slide confidence 0.98
Text source: agent_vision.

Slide text:

Real MCP apps, in production

Recreated text/layout view: open HTML recreation
AI slide classifier: content_slide confidence 0.98
Text source: agent_vision.

Slide text:

Real MCP apps, in production

Recreated text/layout view: open HTML recreation
AI slide classifier: title_card confidence 0.99
Text source: agent_vision.

Slide text:

PART 3

Distribution and discovery

A front door to your product that did not exist a year ago.

Recreated text/layout view: open HTML recreation
AI slide classifier: content_slide confidence 0.99
Text source: agent_vision.

Slide text:

The store is a new distribution channel

Getting listed makes installing your server one click. The alternative is pasting JSON into a config file, which most people never will.

Recreated text/layout view: open HTML recreation
AI slide classifier: content_slide confidence 0.99
Text source: agent_vision.

Slide text:

Be there, or get bypassed

Any product used by humans through a UI will need an MCP App version, or it gets bypassed by people who do everything through agents.

Recreated text/layout view: open HTML recreation
AI slide classifier: title_card confidence 0.99
Text source: agent_vision.

Slide text:

Nobody wants to look at your dashboard.

Ship an MCP App.

Hidden Non-Slide Evidence

`slide-009.jpg` — demo_video confidence 0.98; Full-screen app/demo footage, not a presentation slide.
`slide-010.jpg` — demo_video confidence 0.98; Full-screen app/demo footage, not a presentation slide.
`slide-011.jpg` — demo_video confidence 0.97; Full-screen app/demo footage, not a presentation slide.
`slide-012.jpg` — blank confidence 0.95; Mostly blank cropped demo frame with only partial UI text.

Classification audit: raw/sources/slide-ai-classification/slides/sAOBXCDiDOs/audit.json

Slide-Derived Subjects To Review

Subject extraction uses video title, related session titles/descriptions, transcript context, and OCR text when available. OCR is best-effort and should be reviewed against the embedded slide images.