Sirokuma Add-in Store

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What is this?

A kit that lets Claude draw 3D models and 2D drawings in Autodesk Fusion from scanned PDF drawings: a Fusion add-in plus the instructions you hand to Claude Code. We hope you will use this paid trial edition as a reference for what today’s AI can do.

Who this is for

This add-in is operated by an AI. Because it relies on today’s AI, it is not guaranteed to finish a drawing. It is for people who accept this, who will use it in a “great if it draws” spirit, and who can think of it as a toy.

Only Claude is supported.

About the paid trial edition

  • Monthly or yearly subscription. There is no one-time purchase. One license key works on one PC only.
  • No warranty. Always check for yourself whether the drawing was read and drawn correctly.
  • No refunds for periods already paid.
  • Your drawings are sent to and processed by your own Claude (Anthropic).
  • This add-in learns as you use it. If you tell it what you would like after a drawing is finished, your request is recorded and used from the next drawing on. It may get better, or it may stop drawing shapes it could draw before, and we cannot promise in advance how it will develop.

Requirements

  • Windows
  • Autodesk Fusion
  • A Claude plan that includes Claude Code (your own subscription)
  • Autodesk’s Fusion MCP
  • Claude only (no other AI is supported)
  • An internet connection when you enter your license key and when the license’s expiry date is renewed

Price

US$3 per day, US$49.99 per month or US$450 per year (tax included)

PayPal recurring payment (renews automatically until you cancel; cancel at any time in PayPal). No one-time purchase. Claude and Fusion fees are not included.

Limited to 10 subscribers, reservations, plan changes and cancellation

  • Limited to 10 subscribers in total (daily, monthly and yearly combined). If it is well received, we may add more seats
  • When all seats are taken, you can reserve (free). You receive a reservation key by email; after you buy, that key becomes your license key as it is
  • When a seat opens up, we email everyone with a reservation at the same time. The time the email arrives is not fixed (it may be in the middle of the night). After a notice, applications are first come, first served
  • Current subscribers can change between daily, monthly and yearly while keeping their seat. Apply from “Change plan” in the add-in and approve it on the PayPal approval page (the new plan starts at the end of the period already paid for, and the previous plan is cancelled automatically)
  • You cancel from “Automatic payments” in PayPal. Choosing “Cancel (in PayPal)” under “Change plan” in the add-in opens that page. After cancelling, you can keep using it until the end of the period you have paid for
  • If you cancel, you give up your seat. To use it again, you will need to reserve and wait in line from the start
  • You can see your selected plan (daily, monthly or yearly), the period you have paid for and your next plan under “View plan” in the add-in
  • The daily plan connects to the internet to check your license key each time Fusion starts. After 30 days, it costs more than the monthly plan
Reserve when all seats are taken (free)
Plan change for current subscribers

From purchase to use

  1. Read “Before you buy” below, then on the screen after “Proceed to the final check”, choose daily, monthly or yearly, agree and subscribe with PayPal
  2. You receive your license key and download instructions by email
  3. Download the kit, add it to Fusion, and enter your license key at first launch

Important: Sirokuma Model 4 does not draw by itself. After you press [Start] on the palette, copy the instruction text (prompt) it shows and paste it, as is, into a new Claude Code conversation, then send it. Claude does the drawing — nothing starts until you paste the prompt.

Before you buy

Your order (daily)

  • Product: Sirokuma Model 4 (Paid Trial Edition) / one license key for one PC
  • Price: US$3 per day (tax included). Claude and Fusion fees are not included
  • When you pay: the first payment when you subscribe, then automatically through PayPal every day (after 30 days it costs more than the monthly plan)
  • Contract period: renews automatically every day (until you cancel; there is no minimum term)
  • How to cancel: you can stop it at any time from “Automatic payments” in PayPal. If you stop it before the next payment date, no further payment is taken. After cancelling, you can keep using it until the end of the period you have paid for
  • Delivery: after we confirm the first payment, we email your license key and download instructions
  • Sales period: no fixed period
  • Returns and refunds: not available for periods already paid (special return terms)

Your order (monthly)

  • Product: Sirokuma Model 4 (Paid Trial Edition) / one license key for one PC
  • Price: US$49.99 per month (tax included). Claude and Fusion fees are not included
  • Payment timing: the first payment when you subscribe, then automatically through PayPal every month
  • Term: renews automatically every month until you cancel (no minimum term)
  • How to cancel: you can stop it at any time from “Automatic payments” in your PayPal account. If you stop it before the next payment date, no further payment is taken. After cancelling, you can keep using the Product until the end of the period you have paid for
  • Delivery: after we confirm your first payment, we email your license key and download instructions
  • Ordering period: none
  • Returns and refunds: not accepted for periods already paid (see item 16)

Your order (yearly)

  • Product: Sirokuma Model 4 (Paid Trial Edition) / one license key for one PC
  • Price: US$450 per year (tax included). Claude and Fusion fees are not included
  • Payment timing: the first payment when you subscribe, then automatically through PayPal every year
  • Term: renews automatically every year until you cancel (no minimum term)
  • How to cancel: you can stop it at any time from “Automatic payments” in your PayPal account. If you stop it before the next payment date, no further payment is taken. After cancelling, you can keep using the Product until the end of the period you have paid for
  • Delivery: after we confirm your first payment, we email your license key and download instructions
  • Ordering period: none
  • Returns and refunds: not accepted for periods already paid (see item 16)

Please read before you buy

Please read all of items 1–22 below. On the screen after “Proceed to the final check” at the bottom, you will tick each of items 1–22. You cannot proceed to payment until all of them are ticked.

  1. This product is a Fusion add-in in which an AI (Claude) does the drawing. I understand that it is not a finished product but a “paid trial edition” for trying out what today’s AI can do.
  2. Because the work is done by today’s AI, it is not guaranteed to finish a drawing. I understand that it may stop partway, fail to draw, or draw shapes or dimensions incorrectly.
  3. I will use it in a “great if it draws” spirit and buy it thinking of it as a toy.
  4. I will always check the shapes and dimensions of the 3D models and 2D drawings myself before using them. I agree not to use them for machining, manufacturing, quotes, deliveries or similar purposes without checking.
  5. No AI other than Claude is supported. I understand that I need my own Claude plan that includes Claude Code (my own subscription, at my own cost), and that its fees are not included in the price.
  6. I understand that I need Windows, Autodesk Fusion and Fusion MCP separately, and that I will provide my own Fusion subscription at my own cost.
  7. I understand that changes to Claude, Fusion or Windows, or outages or discontinuation of those services, may cause this product to stop working or behave differently, and that the seller cannot prevent this.
  8. The drawings (PDF) I load and their contents are sent to and processed by my own Claude (Anthropic). I will decide for myself whether I may use drawings that belong to other companies or are covered by confidentiality agreements, and I use them at my own responsibility.
  9. Drawing consumes my Claude usage (limits), and Fusion data will be created or changed. I will back up important data first.
  10. One license key works on one PC only. It may stop working if I replace or repair my PC or reinstall Windows.
  11. I will not transfer, lend, share or distribute the license key or the downloaded files. I will not modify, analyze or redistribute the contents.
  12. There is no warranty. I understand that fixes, updates and answers to inquiries are not promised (when a fix is ready, we may tell you inside the Product when it starts). I understand that bug reports must be sent through the contact form with the license key and a description of the problem, that a Fusion file (.f3d) that reproduces the problem must then be attached to a reply to our email, and that reports without both the license key and the .f3d file cannot be accepted.
  13. I understand that a daily, monthly or yearly plan renews automatically until I cancel, and that the same amount is paid through PayPal each time. I also understand that, if the plan starts with a free trial, payments start automatically when the trial ends. If the price changes, you will tell me by email in advance.
  14. I will cancel by myself from “Automatic payments” in my PayPal account. I understand that after cancelling I can keep using the Product until the end of the period I have paid for (or, if I cancel during a free trial, until the end of the trial).
  15. While payments continue, the Product checks my license over the internet and automatically extends the date until which it can be used. I understand that if I cancel, if a payment fails, or if my PC stays offline for a long time, the Product stops working after that date.
  16. Because this is a digital product, no returns, refunds or cancellations are accepted for periods already paid. I agree that this also applies if “it was not what I expected”, “it could not draw” or “I no longer use it”.
  17. I agree that, except in cases of intent or gross negligence, the seller’s liability is limited to the amount I paid.
  18. I am 18 or older (or, if I am under 18, I have the consent of a parent or guardian).
  19. This add-in has a limited self-learning ability (vocabulary building): it ships with a certain amount of vocabulary the seller built up through its own drawing runs, and it records the requests I make after a drawing is finished on this PC and uses them from the next drawing on. The add-in’s program itself does not change. Because my requests are applied through the AI’s judgment, it may get better or may stop drawing things it could draw before, and I understand that even the seller cannot predict how it will develop. After all, it’s AI…
  20. I have read and understood everything on the product page and on this screen, including the terms of sale, and I agree to it before buying.
  21. I understand that the Product is limited to 10 subscribers in total (daily, monthly and yearly combined; more seats may be added if it is well received); that when all seats are taken I can only reserve, and when a seat opens up, applications are first come, first served among reservations; that if I cancel, I give up my seat and will need to reserve and wait to use it again; and that I can change between daily, monthly and yearly with my current license key while keeping my seat, in which case the new plan starts at the end of the period I have already paid for and the previous plan is cancelled automatically.
  22. I request that my license key and download be provided immediately after my first payment (or, if the plan starts with a free trial, immediately after I approve the subscription), and I acknowledge that, where a statutory right of withdrawal applies (for example, the 14-day right in the EU), I lose that right once delivery has begun.

For how we handle your email address and other personal data, please see our Privacy Policy.

Proceed to the final check

On the next screen, choose daily, monthly or yearly, check your order and items 1–22, tick the box and enter your email address, company name and job title to proceed to PayPal.

Terms of sale (for this product)

  • Price: US$3 per day / US$49.99 per month / US$450 per year (tax included)
  • Quantity: up to 10 subscribers in total, daily, monthly and yearly combined (more seats may be added if it is well received)
  • Other costs: fees for Claude (a plan that includes Claude Code) and Autodesk Fusion (your own subscriptions). Please use it in an environment with plenty of room in your token allowance (it uses a lot of tokens).
  • Requirements: see “Requirements” above

For the seller, payment, delivery, returns, cancellation, liability and other items, see the Terms of sale that apply to all products.