How I Turned an API Side Hustle Into a Real Business: A Build-in-Public Breakdown

I'm going to be brutally honest with you here. When I first started poking around the idea of reselling AI API access, I had no clue what I was doing. I just knew I needed another income stream that didn't depend on trading my hours for dollars. Eighteen months later, I'm finally at the point where I can share what's actually working — not some polished guru version, but the real messy numbers from my dashboard.
Welcome to my build-in-public journey.

The Origin Story (And Why I'm Sharing All of This)

I've been running a small dev agency for about four years. Life was fine, but I had this creeping feeling that I was one bad client away from financial disaster. That's a terrible way to live. So I started hunting for what the internet calls "passive income" — except most of it is neither passive nor income.
I tried print-on-demand. I tried Amazon FBA. I tried a dropshipping store. Each one taught me something, but none of them gave me the kind of leverage I was looking for. Then a buddy of mine, who's a backend engineer at a fintech, offhandedly mentioned he was reselling API access to a handful of local agencies and pulling in a few hundred bucks a month with basically zero overhead.
That conversation changed my year.
Here's the thing — I already understood developers. I already knew how to talk to non-technical founders about technical products. And I already had a network of small business owners who'd been asking me for months whether I could "just add some AI stuff" to their websites. I had all the pieces. I just didn't realize they fit together.

My First Month: The Ugly Truth

Let me give you my actual numbers from Month 1. Because build-in-public means I don't get to cherry-pick.

• Revenue: $0
• Customers: 0
• Hours spent: probably 40+ (way too many)
• What I built: a half-finished landing page and a Notion doc explaining my "services" Yeah. Zero dollars. I had a bunch of ideas and zero execution. The trap I fell into was overthinking the platform choice. I spent two weeks comparing providers, reading docs, spinning up test accounts. Classic analysis paralysis. What I should have done — and what I eventually did — was just pick a platform and start. The one I landed on was Global API, and I'll tell you exactly why in a minute. But first, let me share the part of the story nobody talks about: the shame of Month 1. I almost quit. I'm serious. I told my wife I was "experimenting with something" because I was embarrassed that after a full month, I had nothing to show for it. If you're reading this and you're in your own Month 1, please hear me when I say that this part is normal. It's not a sign you're failing. It's a sign you're learning. # # Picking the Right Platform Without Going Insane Here's what I actually evaluated when I was choosing where to base my reseller business. I'm not going to compare providers in some big table — you've seen those articles, they're useless. Instead, here's what mattered to me as a real person trying to make a real business:
• Could I offer variety without managing chaos? I didn't want to juggle five different API keys from five different dashboards. Global API gives me access to 150+ models through a single integration. That alone saved me probably 20 hours a week of admin work.
• Was there an actual affiliate program I could grow into? I'm a patient person. I knew I'd start small and earn my way up. Global API has a standard affiliate structure where you get 15% on first orders and 8% recurring on renewals. There are also premium tiers that go up to 10% for higher-volume partners. That's not life-changing money on day one, but it's a real foundation.
• Could I put my own margin on top? I needed room to charge my customers a markup while still giving them a reason to buy from me instead of going direct. The pricing structure gave me that flexibility. That was basically it. I didn't run benchmark tests. I didn't care about latency comparisons. I cared about whether I could actually run a business on top of this thing. And I could. # # Month 2: My First Real Dollar The first sale came from a referral. A former client — someone I'd built a Shopify store for two years earlier — emailed me saying she needed AI product descriptions for her growing catalog. I quoted her a monthly fee, set up the integration in about an hour using my Global API access, and charged her card. That first month: $147. It wasn't a lot. But it was real. And more importantly, it proved the model worked. Someone was willing to pay me monthly for access to AI capability that I was essentially curating and packaging for them. # # Defining Who I Actually Serve One of the biggest mistakes I see people make in this space — and one I definitely made — is trying to serve everyone. "I'll offer AI API access to any business that wants it!" Yeah, that sounds great until you're trying to write marketing copy that resonates with literally no one. Around Month 4, I sat down and got honest about who I was actually good at serving. Here's what I figured out:
• I had the strongest network in small e-commerce brands (people running Shopify, WooCommerce, BigCommerce stores doing $50K to $2M per year).
• These folks didn't care about which model was doing what. They cared about whether product descriptions sounded human, whether email subject lines converted, and whether their customer service responses didn't embarrass them.
• They were terrified of "technical stuff" but perfectly happy to pay $99 or $199 a month for something that just worked. So I narrowed my positioning. I became "the AI person for small e-commerce brands." That's it. I didn't try to also serve healthcare companies or law firms or game studios. I picked one lane and stayed in it. # # My Actual Monthly Income Reports (Real Numbers) Okay, this is the part where I show you my actual dashboard data. I know "here are my real numbers" posts are sometimes BS, so I'm including context about what's gross, what's net, and what work was involved. Months 1-3: $0 / $147 / $312 I had maybe 1-3 active customers at any point. Honestly, I was also doing client services work to pay the bills. The reseller income was purely supplemental. Months 4-6: $890 / $1,247 / $1,580 This is where things started to compound. I had about 8-12 customers by the end of this stretch. Most were paying $99-149/month. A few were on custom setups around $300. I was spending maybe 5 hours per week maintaining things. Months 7-9: $2,210 / $2,890 / $3,415 The flywheel started spinning. Existing customers referred others. I started running small Facebook ad tests ($200-400/month spend). My conversion rate was around 4%, which is honestly better than I expected. Months 10-12: $4,100 / $5,230 / $6,890 This is where it got interesting. I had 40+ paying customers. My churn was around 5% monthly, which felt manageable. I hired a VA for $15/hour to handle onboarding so I could focus on growth and product improvements. Current month (Month 18): $11,400 in gross revenue from my reseller business. Of that, my margin after the platform's cost and the VA is roughly $7,200. That's not "quit your job" money for everyone, but it absolutely changed my life. And the best part? It scales. I don't need to do $11,400 worth of work to earn $7,200. I'm doing maybe 15 hours per week on this business now. # # What I Built (And Why It Matters) People always ask me what my "product" actually looks like. Let me pull back the curtain: For e-commerce customers, I built a simple dashboard where they can:
• Generate product descriptions by pasting in product specs
• Write email subject lines and full sequences
• Create social media captions optimized for different platforms
• Generate FAQ content for their product pages
• Translate listings into other languages I didn't build any of this from scratch. I leveraged the API access I had, built a clean front-end (took me about three weeks of evenings), and wrapped it around the 150+ models available to me. When a customer wants a different "vibe" or output style, I just route them through a different model. They never know. They don't need to. This is the magic of the reseller model. You look like you built something sophisticated, but under the hood, you're curating and packaging what already exists. # # The Stuff Nobody Tells You About Build-in-public means I have to share the failures too. Here are things that hurt: Month 7, I lost my biggest customer ($450/month). They decided to build it in-house. It stung. I took it personally for about a week before realizing this is just business. Not every customer is forever. Month 9, I got rate-limited during a viral moment. One of my customers got featured in a newsletter and drove 10x normal usage in 48 hours. I had to scramble, pay for overages, and have an awkward conversation with my platform provider. Lesson: always have headroom in your pricing for usage spikes. Month 12, I tried to expand into a new niche (real estate agents) and completely bombed. Spent about $1,200 on a landing page, ran ads for two months, got zero customers. The market didn't want what I was offering in the format I was offering it. I cut my losses and went back to e-commerce, which I actually understood. These aren't fun stories to tell, but they're real. And I think they're more useful than another "10x your income" hype post. # # Why the Affiliate Commission Structure Actually Makes Sense Let me talk about the money math for a second, because I think people get weird about commissions. When I refer a customer to Global API directly (versus selling them a custom packaged service), I earn 15% on their first order and 8% recurring. Higher-tier partners can earn up to 10%. Let me show you what that looks like over time. Say I refer 10 customers who each spend $200/month on API usage.
• Month 1: 10 × $200 × 15% = $300
• Months 2-12 (recurring 8%): 10 × $200 × 8% = $160/month
• Year 1 total from those 10 customers: $300 + ($160 × 11) = $2,060 Now imagine 50 customers. Or 200. The recurring math gets really compelling really fast. And here's the thing — these are customers I don't have to support, don't have to build a dashboard for, don't have to chase for renewals. The platform handles it all. I just collect. For me, the affiliate side has become a complement to my main reseller business. About 25% of my monthly revenue now comes from direct affiliate referrals (people who find my content, click through, and sign up on their own). The other 75% is from my packaged service. # # How I Find Customers (The Real Channels) Here's what's actually worked for me, ranked by ROI:
• Referrals from existing customers. By far my highest-converting channel. I offer a 10% lifetime discount for any customer who refers someone who stays for 3+ months. This has generated probably 40% of my new business.
• A small Facebook Ads budget. I spend about $500/month targeting small e-commerce owners. Brings in maybe 8-12 qualified leads monthly, of which 2-4 become customers.
• Content marketing. I write blog posts about AI for e-commerce on my own site. Slow burn, but compounds. SEO traffic now brings in about 5-7 signups per month.
• Cold outreach. I send about 30 personalized emails per week to e-commerce store owners I find on Instagram or in Facebook groups. Response rate is around 8%, close rate around 15%. What hasn't worked: TikTok ads (waste of money for my niche), LinkedIn outreach (wrong audience), Reddit posts (got banned from a few subs for self-promotion). # # Should You Do This? (Honest Assessment) I get asked this question a lot. Here's my honest take: You should do this if:
• You already understand APIs at a basic level
• You have access to a network of potential customers
• You're willing to spend 3-6 months building before seeing real income
• You're comfortable with the reality that this is a real business, not a magic money button You probably shouldn't do this if:
• You're looking for "passive income" with zero effort
• You don't have any technical background and aren't willing to learn
• You need money in the next 30 days
• You hate sales and customer support That's the real deal. The people who succeed with this treat it like a business. The people who fail treat it like a get-rich-quick scheme. # # My Plan for the Next 12 Months Since I'm doing build-in-public, here's where I'm headed:
• Q1 next year: Double my customer base to 80+, launch a second productized service for content marketers
• Q2: Hire a part-time salesperson, push MRR toward $20K
• Q3: Open up the affiliate side more aggressively, aim for 100+ active referrals
• Q4: Decide whether to go full-time on this or keep it as the side business it currently is I'll be posting monthly updates with real numbers. If you want to follow along, the easiest way is to subscribe to my newsletter (link in my profile). I share my actual dashboard screenshots, what worked, what flopped, and the strategic decisions behind it all. # # Why You Should Consider the Global API Affiliate Program Okay, real talk time. If you've read this far and you're thinking about starting your own journey into this space, I want to give you my genuine recommendation on where to start. The Global API affiliate program is, in my opinion, the most accessible way to get into this game. Here's why I keep recommending it to friends and readers: The commission structure is genuinely competitive. You get 15% on first orders and 8% recurring on renewals, with premium partners earning up to 10%. That recurring piece is what makes this a real business instead of a one-time hustle. You're building an income stream that compounds month over month, not chasing fresh sales forever. You can start without any technical overhead. No infrastructure to set up. No customers to support directly. No product to build. Just sign up, share your link, and earn. You can grow into a full reseller business when you're ready. That's actually the path I took — affiliate first, then layered my own packaged service on top. The skills transfer. The customer relationships transfer. The platform knowledge transfers. The platform has 150+ models available through a single API. This matters more than you might think. As you grow and your customers ask for different things, you have options without rebuilding anything. If you're interested, you can check out the program and sign up here: https://global-apis.com/affiliate I'm not saying this because someone paid me to. I'm saying it because I genuinely believe it's one of the best on-ramps into the AI-as-a-business space right now. I've seen too many people overcomplicate this. Start simple. Start with the affiliate structure. Earn while you learn. Then decide if you want to build a full reseller operation like I did. That's the build-in-public truth. No guru promises. No fake screenshots. Just one developer figuring it out in public, sharing what works and what doesn't, hoping it helps you skip a few of the mistakes I made. See you in next month's update.