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Darby Testimonial from Markus Heitkoetter | Founder, Rockwell Trading
Published November 29, 2025 · 17 views on YouTube
What results has Darby’s AI consulting delivered for real clients?
Markus Heitkoetter, founder of Rockwell Trading, says Darby built his team several tools they use daily: a YouTube script writer that produced two of their best-performing videos ever (one hit 150,000 views, another passed 250,000), a tool that repurposes those scripts into social media content, and an AI agent named Heroxy that answers phones and helps customers when the support team is unavailable.
Who is Markus Heitkoetter and what is Rockwell Trading?
Markus Heitkoetter is the founder of Rockwell Trading. In the video, he explains that like many businesses, his team knew they needed to figure out AI but found that most AI consultants just tell you what to do and then disappear, without building anything real.
What tools did Darby build for Rockwell Trading?
According to Markus, Darby delivered three concrete tools:
- A YouTube script-writing tool that produced videos performing well above their typical average, including one with 150,000 views and one with over 250,000 views.
- A repurposing tool that turns those video scripts into social media content, giving the team more mileage out of every piece of content they create.
- An AI phone agent called Heroxy that answers calls and helps customers when the support team isn’t available.
What makes Darby’s AI consulting approach different, according to this testimonial?
Markus says what impressed him most is that Darby doesn’t just hand over strategy slides — he actually builds working implementations. He describes Darby as someone who can both strategize and implement AI solutions that deliver real results, rather than just planning them.
Full video transcript
So, here’s the deal. Like everyone else these days, we knew we needed to figure out AI. But here’s the thing: most AI consultants, they just tell you what to do and then disappear.
Now, Darby is different because he actually built us several tools that we use daily. First, he did a tool that helps us write YouTube scripts. And I’m not talking about some generic content — these videos became some of our best videos that we ever published, because one of them hit 150,000 views and the other one more than 250,000 views.
Then he created another tool that repurposes those video scripts into social media content. So now we are getting way more mileage out of every piece of content that we create.
But here’s what really impressed me: Darby built us an AI agent we call Heroxy who answers our phones and helps customers when our support team is not available. So this is really, really cool because it’s real implementation, not just some strategy slides, you see. And this is what sets Darby apart — he doesn’t just give you a plan, he actually builds the stuff and makes it work.
So, if you’re looking for someone who can both strategize and implement AI solutions that actually deliver results, Darby is your guy.