WebMCP is a proposed web standard from the W3C Web Machine Learning Community Group. A web page describes the actions it offers, and an AI assistant in the browser calls them instead of guessing where to click. ChatGPT's built-in browser supports it, and Google Chrome is testing it.

Edit your patterns by asking ChatGPT

Q: How do I use Knytstudio with ChatGPT?

Open the ChatGPT desktop app, open its built-in browser and go to knytstudio.com. When the site-tools icon shows in the address bar, ChatGPT can use Knytstudio's tools. Open a pattern and ask for the change in the chat.

Q: Do I need to pay for it?

Not on Knytstudio's side: the ChatGPT tools work on the free plan. Downloading a PDF works as always (your first pattern is free, then unlock a pattern or use Pro). On ChatGPT's side, site tools are a feature of the desktop app's built-in browser, and OpenAI decides which accounts have it.

Q: Does it work in the ChatGPT phone app?

Not yet. Site tools work in the built-in browser of the ChatGPT desktop app. On your phone, Knytstudio works as usual in any browser.

Q: Can ChatGPT change things I did not ask for?

ChatGPT acts on what you ask in the chat, through the same tools the editor uses. Every change shows on the chart and is one Undo step, so you can always take it back. It cannot change patterns that are read-only for you, and it does not change a chart while the stitch tracker is open.

Q: Which crafts does it work for?

Cross stitch, needlepoint, diamond painting, fuse beads, knitting and crochet charts, and knitted garment pieces. The 3D amigurumi designer does not have ChatGPT tools yet.

Q: Is Knytstudio part of OpenAI?

No. Knytstudio is an independent pattern maker that supports the WebMCP standard. ChatGPT is a trademark of OpenAI.

Knytstudio works with ChatGPT's built-in browser. Open a pattern, say what you want changed, and ChatGPT makes the edit in the editor while you watch: swap threads, add a border, merge look-alike colours, resize, rename. Every change is one Undo step.

Swap threads Add borders Merge colours Find patterns Undo anything

Open Knytstudio Read the announcement

Knytstudio open in ChatGPT's built-in browser, with the site tools menu listing search_patterns, start_pattern and open_my_patterns

ChatGPT's browser lists the tools Knytstudio offers on each page.

How it works

Open Knytstudio in ChatGPT

In the ChatGPT desktop app, open the built-in browser and go to knytstudio.com. The site-tools icon in the address bar means ChatGPT can use Knytstudio's tools.

Open a pattern

Turn a photo into a pattern, start a blank chart, or open one of your saved patterns. ChatGPT can find and open them for you.

Ask for the change

ChatGPT reads the chart and its threads, makes the edit, and you see it on the chart straight away. Not what you wanted? Press Undo.

Things to ask

Thread codes and colour names both work. For cross stitch, needlepoint and diamond painting every colour is a real thread: ask for a shade DMC doesn't make and Knytstudio picks the nearest thread and says which one.

“Replace DMC 321 with a darker red.”

Every stitch of that thread changes in one go.

“Add a two-stitch border in DMC 310 around the whole pattern.”

ChatGPT reads the chart size and paints the border.

“This pattern has 41 colours. Merge the ones that look almost the same.”

Fewer threads to buy, one Undo to take it back.

“Make it 120 stitches wide and keep the bottom edge where it is.”

The chart is resized around the edge you name.

“Clear the background behind the cat.”

ChatGPT reads the chart and erases the cells you mean.

“Remove the colours nothing uses, and rename it Autumn Fox.”

Palette and title, tidied.

“Find my fox pattern and open it.”

On your dashboard, ChatGPT finds and opens your saved patterns.

“Show me Halloween patterns.”

The Discover page opens with the results, and ChatGPT sums them up.

Point at what you mean

ChatGPT's browser has an annotation mode: click something on the page and write a note about it. In Knytstudio every thread in the palette is a named target, so when you click "DMC 3708 Melon Light" and write "make this warmer", ChatGPT knows exactly which thread you mean and how many stitches use it.

Inside ChatGPT's browser the palette also has an Ask ChatGPT button with a suggested prompt about your colour scheme. Other browsers don't show it.

The Knytstudio palette in ChatGPT's browser, with the Ask ChatGPT button under Add

What ChatGPT can do on each page

Every page of knytstudio.com

Search the community patterns by words, tag and craft, and show the results on the Discover page
Start a new pattern from a photo, from a description, or as a blank chart
Open your dashboard

Your dashboard

List and search your saved patterns
Open a pattern in the editor
Start a new pattern

The pattern editor

Read the pattern: size, craft, every thread with its code and stitch count
Read the chart, row by row
Look up DMC and Anchor threads, or Hama and Perler beads, by code, name or colour
Paint and erase stitches
Replace a colour everywhere, or merge several colours into one
Add colours to the palette and remove unused ones
Resize the chart, rename the pattern, switch the view
Undo and redo
Open the PDF export for you to download

You stay in charge

Every change happens in the open editor, where you can see it, and is saved like your own edits.
Every change is one normal Undo step.
ChatGPT works with your login in that browser, so it can only change patterns you can change. Read-only patterns stay as they are, and nothing changes while the stitch tracker is open.
Downloads stay your step: ChatGPT can open the PDF export, and you choose and download.

For developers and AI assistants

Knytstudio implements WebMCP: every page registers its tools with document.modelContext.registerTool, with read-only tools marked as such. The tools of each page are listed in /.well-known/webmcp.json, and llms.txt describes the site.

Frequently asked questions

How do I use Knytstudio with ChatGPT?

Do I need to pay for it?

Does it work in the ChatGPT phone app?

Can ChatGPT change things I did not ask for?

Which crafts does it work for?

What is WebMCP?

Is Knytstudio part of OpenAI?

Make a pattern, then ask for changes

Turn a photo into a cross stitch pattern for free, then open it in ChatGPT's browser and shape it by asking.

Open Knytstudio