Slides 5

THE AGENT-NATIVE WEB

Interfaces people can see. Tools agents can trust.

Deckhand gives humans a visual canvas and agents a semantic one—both editing the same live presentation.

✦

Human UI

Live state

WebMCP

DECKHAND / 2026 01

THE BROKEN HANDOFF

The handoff is the bug.

Today’s AI slide tools stop collaborating the moment a human starts refining the work.

68%of teams rebuild AI output

PromptDescribe every decision

GenerateAccept a black box

RebuildLose the AI context

THE PROBLEM 02

SEMANTICS, NOT COORDINATES

A scene graph agents can reason about.

inspect_project({ scope: "summary" })

plan_deck({
  audience, objective, slides
})

compose_deck({ plan_id })
validate_deck({})

SlideNarrative + layout

ElementRole + geometry + style

SelectionThe human’s live intent

THE INTERFACE 03

DIRECT MANIPULATION

Show, don’t prompt.

One deliberate edit can teach the agent more than a paragraph of instructions.

BEFORE

Everything we know about the marketLong copy · tight spacing · low contrast

→

AFTER

One signal. Made visible.–46% copy · +32% whitespace

THE COLLABORATION 04

DECKHAND

A slide editor agents can actually operate.

Humans shape the story by sight. Agents shape it through a precise, inspectable tool surface.

VisualDirect editing

Focused5 core tools

ReversibleShared history

ExtensibleOpen JSON

THE PRODUCT 05

Deckhand is a wide canvas.

Open this prototype on a desktop-sized window to edit alongside your browser agent.