How to use Ourlette in ChatGPT and Claude

Ourlette works inside ChatGPT and Claude as an app, also called a connector, built on an MCP server at https://ourlette.com/api/mcp. Add it once with that URL, sign in with your Ourlette account, then ask for a pattern in the chat with a link to a photo or a description of the garment. Ourlette drafts the pattern to your measurements or a standard size, shows it in the conversation as a pattern card and gives you a link to the printable PDF; printing needs a paid Ourlette plan.

What Ourlette does inside a chat

• You ask in your own words, in any language. When you ask for a pattern, the assistant sends Ourlette your link or description and your measurements or size.
• Ourlette drafts, it does not guess. As in the app, the AI recognizes the garment and, when it is one of Ourlette's 36 catalogue garments, sets its options: length, neckline, sleeves, fullness, closure, pockets. Anything else is drafted piece by piece by Ourlette's AI pattern maker on the Maker plan (3 exact designs a month) and the Atelier plan, in 4 to 8 minutes; on the Free plan, Ourlette suggests the closest tested models and Community patterns to start from instead. Ourlette's drafting engine then draws every piece from flat-pattern blocks with your measurements and the right ease. The same inputs always give the same pattern.
• You get a pattern card and a PDF link. The pattern appears in the conversation, with a link to the PDF at true scale and its sewing guide.
• Your Ourlette plan applies. You sign in with your own Ourlette account, so your plan's allowances apply: monthly AI patterns, big changes and AI messages, plus 2 small AI changes per pattern on the free plan, 3 exact designs a month on Maker and 12 AI credits on Atelier. Printing needs the Maker or Atelier plan, apart from 6 easy models that print for free.

What you need

• A Ourlette account. The free plan is enough to make patterns; printing needs a paid plan.
• ChatGPT or Claude on a plan that lets you add custom connectors or apps. In work and school accounts, an administrator may need to allow them.
• Your height, bust, waist and hip measurements, or a standard size: women EU 32 to 54 (US 0 to 22, UK 4 to 26), men XS to 3XL, children 2 to 14 years. If you have not measured yet, see how to take your body measurements.

How to add Ourlette to Claude

1. In recent versions of Claude, open Settings → Connectors.
2. Choose to add a custom connector.
3. Name it Ourlette and paste the server URL: https://ourlette.com/api/mcp.
4. Connect it. A Ourlette sign-in page opens: sign in, or create a free account, and allow access.
5. In a conversation, open the tools or connectors menu and check that Ourlette is turned on.

The Ourlette connector page for Claude keeps these steps up to date.

How to add Ourlette to ChatGPT

1. In recent versions of ChatGPT, open Settings → Apps (called Connectors in some versions).
2. Choose to add or create an app from a URL. Some plans ask you to turn on an advanced or developer setting before custom apps can be added.
3. Name it Ourlette and paste https://ourlette.com/api/mcp. If the form asks how to authenticate, keep the sign-in (OAuth) option.
4. Sign in with your Ourlette account when the window opens, and allow access.
5. In a chat, pick Ourlette from the tools or apps menu, or name it in your request.

The Ourlette app page for ChatGPT has the latest details.

Note: Menus in ChatGPT and Claude change often. If the names differ, look for the place where you manage connectors or apps: Ourlette only needs its URL and your Ourlette sign-in.

How to ask for a pattern

1. Say what you want and where it comes from. Paste a link to a public Pinterest pin, Instagram post or shop page, or describe the garment: type, length, neckline, sleeves, closure, pockets. Starting from a pin? See turning a Pinterest pin into a pattern.
2. Give your measurements or a size. Height, bust, waist and hip are enough to start; Ourlette fills in the rest from the nearest size. Say whether your numbers are in centimeters or inches.
3. Mention the fabric if you know it. Woven or knit changes the ease and the seam allowances.
4. Ask for Ourlette by name if the assistant starts writing instructions itself: "Use Ourlette to draft this pattern."
5. Check the pattern card, then ask for changes in words: "make it midi", "add in-seam pockets", "change to a V-neck".
6. Open the PDF link to print at true scale on A4, US Letter, A3, Tabloid, A0 or 36 × 48 in copy-shop paper, or as a projector file.

Some requests that work well:

• "Here is a dress I love on Pinterest: (paste the link). Make the pattern with Ourlette in EU size 40."
• "Use Ourlette to draft a relaxed linen shift dress, knee length, short sleeves, with in-seam pockets. Height 165 cm, bust 90 cm, waist 72 cm, hip 98 cm."
• "Make a bucket hat pattern with Ourlette for a 57 cm head."
• "With Ourlette, draft a lined tote bag 40 cm wide with boxed corners and an inner pocket."

Why not ask the assistant for a pattern directly?

On their own, chat assistants can explain techniques and suggest measurements, but they do not draw pattern pieces to scale that you can print and cut. Ourlette does that part: pieces drafted from flat-pattern blocks, seam allowances included, a tiled PDF with a 5 cm and 2 in test square. There is a fair comparison in asking ChatGPT for a sewing pattern.

What Ourlette can draft

Ourlette has a catalogue of 36 garment types with tested drafting: skirts (A-line, circle, gathered and tiered, pencil, wrap, build your own), tops and shirts (T-shirt and tank, woven top or blouse, sweatshirt and hoodie, button-up shirt, camp shirt, build your own top, shirt, jacket or coat), dresses (shift, fit-and-flare, slip, shirt dress, build your own), trousers (pull-on trousers and shorts, jeans, chinos, build your own), jackets (kimono, trucker, chore and bomber jackets, trucker vest, waistcoat), and accessories and home pieces (tote bag, drawstring bag, zip pouch, bucket hat, scrunchie, headband, cushion cover, apron). Anything else, from jumpsuits and blazers with notched lapels to corsets, lingerie, swimwear, backpacks or toys, is drafted by its AI pattern maker on the Maker plan (3 exact designs a month) and the Atelier plan; on the Free plan, Ourlette suggests the closest tested models and Community patterns to start from. Those designs are new and not yet tested on real bodies, so sew a toile first; structured tailoring, underwired bras and boned corsetry may need adjusting by hand.

The Ourlette app at app.ourlette.com also gives you direct photo and screenshot uploads, the guided measuring assistant, the 3D preview on a mannequin built from your measurements, and free, unlimited changes by hand to every option and measurement.

Troubleshooting