🔹 Founding Members – €359 + VAT. You’re early. The first builders to learn Tekla Open API the right way lock in the founding price – and every future update, free. Price rises to €449 + VAT when the founding cohort closes. Limited to the first 20 members.
ONLINE COURSE · FOR TEKLA STRUCTURES PROFESSIONALS
Build real Tekla tools with an AI agent – even if you’ve never coded.
The agent writes the C#. You learn to read and verify it – the skill that actually keeps your model safe. Across 15 lessons (≈3.5 hours) you go from a read-only reporter to a packaged, one-click Tekla plugin.
Tick both boxes to continue.
Secure checkout by Lemon Squeezy, our merchant of record — card or PayPal, invoice issued automatically. Priced in EUR, excluding VAT: a business with a valid EU VAT number pays €359 under reverse charge, and everyone else has their national rate added at checkout (€441.57 in Poland at 23%). Outside the EU, Lemon Squeezy applies your country’s own tax, if any.
Watch the free lessons before you buy · Founding members get every future update free
WHAT YOU'RE REALLY LEARNING
A method for driving an AI coding agent - proven on the hardest API you'll meet.
This is not a programming course. It's a course on how to drive an AI coding agent (Claude - 20$/month - in VS Code) against a hostile, badly-documented production API - and stay in charge of it. The agent writes the C#; you learn to read and verify it.
Tekla's Open API is the proving ground because it raises the stakes: your code writes to a real building model. Written for a Tekla professional - detailer, engineer, fabricator - not a programmer.
You came for Tekla, but you leave with a method for driving an AI agent against any domain API.
START HERE · LESSONS 1–3 · ONBOARDING, NO CODE
Three short lessons before you build anything.
Foundations
What an AI agent actually is - and why a curated skill makes it stop guessing wrong API names.
FREE ON YOUTUBE
Working Safely + Prompting
The two habits that protect your model and get working code on the first try.
FREE ON YOUTUBE
Developer Environment
VS Code and Claude Pro (20$ per month) installed from zero - a workspace the agent can read and write, with the skill proven live. The setup nobody hands you, done once, properly.
IN THE COURSE
CORE TRACK · 12 LESSONS · ≈3 HOURS
One skill per lesson. One working tool you keep, every time.
The artifacts ramp read → write → create → connect → extend → ship, so your capability and your control over the agent grow together.
| # | What you'll be able to do | Built on (the real tool) |
|---|---|---|
| 4 | Read code you didn't write - never treat the agent as a black box | A Selection Reporter - profile, material, length, weight of any selection |
| 5 | Verify against ground truth - and build on the tool you already trust | A Quantity Take-Off to CSV, grouped by profile and material, cross-checked against Tekla's own report |
| 6 | Prompt with constraints & catch silent failure - a wrong Tekla write doesn't crash, it says "done" and changes nothing | Model modification - UDA vs. real property, and the Modify() trap that fools every beginner |
| 7 | Work in slices - one verified slice first, never the whole tool in one shot | New objects - a beam and a contour plate, in millimetres, on the right work plane |
| 8 | Encode your trade rules in the prompt - the agent won't assume them | Bolts & welds - the picker, bolt arrays, primary/secondary part roles |
| 9 | Make the agent reuse what exists - not reinvent it | Component insertion - driving a built-in connection by number and name |
| 10 | Scale past one file - manage a real project with an agent | From macro to project - the jump from a single .cs to a real solution and build |
| 11 | Split a big idea into steps - plan with the agent instead of one-shotting it | A WPF warehouse - a parametric portal-frame building driven from a real dialog |
| 12 | Extend Tekla itself - put your own logic where Tekla already looks | A custom property - reinforcement ratio, live in reports, templates and filters |
| 13 | Work on code you can't just re-run - the technique for iterating on a locked plug-in | Your first plugin - a parametric straight ladder with real input points and parameters |
| 14 | Recover when it breaks - see the runtime values the agent never can | Debugging - breakpoints, the live values, and the silent-no-op checklist |
| 15 | Ship it - where "compiled" ≠ "installed" | A one-click .tsep installer - your tool, packaged the way Tekla expects |
WHAT YOU KEEP
Plus - the curated Tekla skill itself.
The same reference library and drop-in helpers that make the agent stop guessing - model sweeps, type-safe UDA and report-property readers, project scaffolding. Watermarked to you and yours to keep.
YOUR INSTRUCTOR
Built by someone who ships Tekla tools for a living.
I'm Greg Olszewski - engineer, software developer and educator in the construction industry. My day-to-day work is process automation across the AEC ecosystem, and my open-source Tekla tools are how I test everything I teach - you can inspect the code before you trust me with a single euro.
This course exists because I kept watching capable Tekla professionals bounce off the Open API's learning curve - and then watched an AI agent, handed the right reference material, dissolve that curve. Teaching that method properly is the most useful thing I know how to do.
ON STAGE
- Tekla User Days - Construsoft 2024 & Tallinn 2026
- Trimble Dimensions 2025
- Trimble Dev Camp 2026
- AEC Hackathon · BIM Meetup
IN THE OPEN
- Grasshopper Tekla Drawing Link - parametric drawing automation
- Tekla Lookup - object & API inspector for developers
- dotbim Exporter - Tekla models to .bim
- Trimble Connect → Power BI connector
IN THE CLASSROOM
- Trimble Connect API course - 8 modules, free
- Grasshopper in Tekla - annual intensive, co-taught with Kris Wojslaw
FOUNDING ACCESS
Founding price
€359 + VAT
Rising to €449 + VAT once the first 20 seats fill. The price only moves up - never down.
Prices exclude VAT. Businesses with a valid EU VAT number pay €359 under reverse charge. Consumers and buyers without a VAT number have their national rate added at checkout - €441.57 in Poland at 23%. Outside the EU, Lemon Squeezy applies whatever local tax your country requires, if any.
- All 15 lessons - 3 onboarding + 12 core (≈3.5 hours)
- The curated Tekla skill - watermarked to you, yours to keep
- Every working tool built in the course, as code
- Lifetime free updates - founding members never pay again
- Founding-member recognition + a direct line for questions
Tick both boxes to continue.
Secure checkout by Lemon Squeezy, our merchant of record — card or PayPal, invoice issued automatically. Priced in EUR, excluding VAT: a business with a valid EU VAT number pays €359 under reverse charge, and everyone else has their national rate added at checkout (€441.57 in Poland at 23%). Outside the EU, Lemon Squeezy applies your country's own tax, if any.
Decide with your own eyes. Foundations, Working Safely and the complete Selection Reporter build are free on YouTube - watch them first and know exactly what you're buying. One automated workflow pays this back on your next project - a commissioned plugin runs €2,000+.
QUESTIONS
Answers before you ask.
Do I need to be a programmer?
No. The AI agent writes the C# - you learn to read and verify it, which is the skill that actually keeps your model safe. We build real tools in plain language first, code second.
Which Tekla Structures version do I need?
Any reasonably recent one. The course is recorded on Tekla Structures 2025 and works out of the box on Tekla 2021 or newer. Older versions (2020 and earlier) are supported too - the API is the same, they just install a different package, and the included skill knows the difference and sets your project up for your exact version. The environment-setup lesson covers it.
What software do I need besides Tekla?
VS Code with Claude Pro 20$/month (an AI coding agent) and a Tekla Structures license. The environment-setup lesson walks through everything from zero.
What exactly do I keep after the course?
Every tool we build (as working code), the complete curated Tekla skill - the reference library that stops the agent guessing - watermarked to you, and lifetime access to all lessons. Founding members also get every future update free.
What if it's not for me?
Find out for free: three full lessons - not trailers - are on YouTube. Foundations, Working Safely + Prompting, and the complete Selection Reporter build, where you finish with a real working tool. Watch them and you'll know exactly what the course is before spending a euro.
Can I buy this through my company? What about VAT?
Yes, and most people do. Prices are shown excluding VAT. At checkout there is a field for a company VAT number: enter a valid EU one and you pay €359 with no VAT added - the reverse-charge rule, which you account for in your own VAT return as usual. Without a VAT number, your country's rate is added (€441.57 in Poland at 23%).
One thing worth checking first: your VAT number has to be registered for EU transactions and visible in VIES, which is a separate registration from a plain domestic one. If it does not validate at checkout, VAT is added - so check it before you buy rather than after. A proper invoice is issued automatically either way by Lemon Squeezy, our merchant of record.
Can I get a refund?
Everything is delivered the moment you pay - all 15 lessons, plus a code library watermarked to you personally. Because that's digital content supplied immediately, completing checkout means asking for instant access and agreeing that this ends the 14-day right of withdrawal you'd otherwise have as an EU or UK consumer. So I don't offer refunds once access has been granted.
That's precisely why three full lessons are free, and why I'd rather you watched them first: buy on the strength of what you've already seen, not on a promise. And if something genuinely goes wrong - the lessons won't play, your library never arrived, you were charged twice - email greg@constructivegreg.com and I'll put it right.
Who am I buying from - and can I put this through the company?
Checkout is handled by Lemon Squeezy, who act as the merchant of record for the sale. Practically, that means Lemon Squeezy takes the payment, applies the correct VAT or sales tax for your country, and issues the invoice - so you can pay by card or PayPal, enter a company VAT number if you have one, and hand the invoice straight to accounts. Billing and invoice questions go to Lemon Squeezy; anything about the course itself comes to me.
The first 20 builders lock in €359 + VAT. Then it's €449 + VAT - for good.
This isn't a discount. It's the reward for being first.
Tick both boxes to continue.
Secure checkout by Lemon Squeezy, our merchant of record — card or PayPal, invoice issued automatically. Priced in EUR, excluding VAT: a business with a valid EU VAT number pays €359 under reverse charge, and everyone else has their national rate added at checkout (€441.57 in Poland at 23%). Outside the EU, Lemon Squeezy applies your country's own tax, if any.