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In January, Amazon changed pricing on SP-API access. Third-party developers now have to pay $1,400/year plus usage fees to pull your data through SP-API. That means every tool you use ... re-pricers, inventory managers, analytics dashboards ... got more expensive.

Those costs are getting passed directly to you through higher SaaS subscriptions.

Here's what most sellers don't realize: if you register as a private developer and use SP-API for your own business, it's still free. No subscription. No per-call fees. Amazon only charges third-party developers building apps for other sellers. Your own internal use? $0.

The same goes for the Amazon Ads API. Completely free, no usage fees.

Make your Own Tools, Get What You Want, and Save $

Think about how much you spend every month on SaaS tools. Your re-pricer. Your analytics dashboard. Your PPC management tool. Your inventory forecasting software.

You're probably dropping $500 to $2,000+/month across all of them. And most of those tools are just pulling your data from Amazon's API, running some logic on it, and showing it back to you in a pretty interface. That's it.

Now here's where it gets interesting. With your own API credentials and either some vibe coding skills, a developer on Fiverr or Upwork, or a tool like Claude Code (Anthropic's command-line coding agent), you can build custom versions of almost any of those tools yourself.

Vibe coding is the term for telling an AI what you want in plain English and having it write the code for you. You don't need to know Python or JavaScript. You describe the tool you want, the AI builds it, you test it, and you refine it. Tools like Claude, Cursor, Lovable, Replit, and Bolt all let you do this right now.

Here's what you could build with your own API access:

Custom profitability dashboards that pull your sales, fees, ad spend, and COGS into one view and show you real margin by SKU, not the vanity metrics most tools show you. You decide what matters. You control the math.

Automated PPC bid adjustments based on your actual inventory levels. Running low on stock? Your system automatically reduces bids or pauses campaigns so you stop burning ad dollars on products you can't fulfill. No more paying $300/month for a PPC tool to do this badly.

AI-powered account health monitoring that watches for listing suppressions, Buy Box drops, policy violations, and negative review spikes, then sends you a Slack message or text alert in real-time. Not when you happen to log in. Not when some tool's daily digest arrives. Immediately.

Pricing automation that actually follows YOUR rules. Maybe you want to be $0.50 under the lowest FBA offer but never below a certain floor. Maybe you want different strategies for different ASINs. Build exactly what you want instead of fighting with some re-pricer's rigid settings.

Ad spend anomaly detection that flags when your ACoS spikes or conversions drop on a campaign without waiting for you to notice three days later in a weekly report.

Inventory forecasting based on your actual velocity data, seasonality patterns, and lead times, not some generic algorithm that doesn't know your supply chain.

The point is: you're not locked into what some SaaS company decided their tool should do. You get exactly what you want.

"But I'm Not Technical"

You don't have to be. Here are three paths:

Path 1: Vibe code it yourself. Open Claude, ChatGPT, Cursor, or Replit and describe what you want. "Build me a Python script that connects to Amazon SP-API, pulls my order data for the last 30 days, calculates profit by SKU after fees and ad spend, and outputs it to a Google Sheet." The AI writes the code. You run it. You iterate. This works surprisingly well for dashboards, alerts, reports, and simple automations.

Path 2: Hire a developer. Take your API credentials and a clear description of what you want to a freelancer on Upwork or Fiverr. A decent Python developer can build you a custom dashboard or automation tool for $500 to $2,000 as a one-time cost. Compare that to $200-$500/month forever for a SaaS tool that only sort of does what you need.

Path 3: Use Claude Code. This is Anthropic's command-line coding agent. You tell it what to build in plain English, and it writes, tests, and iterates on the code right on your computer. It can set up your entire API connection, build the data pipeline, create the dashboard or automation, and help you deploy it. It's like having a senior developer working alongside you who never gets tired and charges a fraction of what a human dev costs.

Any of these paths can replace thousands of dollars per year in SaaS subscriptions. And the tools you build are yours. No monthly fees. No price increases. No feature changes you didn't ask for. No worrying about a tool shutting down and losing access to your workflows overnight (looking at you, every Amazon tool that's been acquired or sunset in the last 3 years).

What This Looks Like in Practice

Let's say you currently pay $150/month for a re-pricer, $200/month for an analytics tool, $250/month for PPC management, and $100/month for inventory alerts. That's $700/month or $8,400/year.

With your own API credentials and some vibe coding (or a hired developer), you could replace most of that functionality with custom tools that cost you essentially nothing to run. Maybe you keep one or two SaaS tools that genuinely add value you can't replicate. But the rest? You built it better, cheaper, and exactly how you wanted it.

The sellers who set this up now will have a massive operational advantage. They'll spend less on tools, have more control over their data, and be ready to plug in AI agents that can actually run parts of their business. The ones who wait will keep paying more for less and renting access to their own data through increasingly expensive middlemen.

Do This Today:

Step 1: Register as a private developer on Amazon at https://solutionproviderportal.amazon.com

Step 2: Create your own app for internal use only

Step 3: Generate your SP-API credentials (LWA client ID + secret, refresh token)

Step 4: Generate your Amazon Ads API credentials at https://developer.amazon.com

Step 5: Open Claude, Cursor, or your AI coding tool of choice and say: "Help me connect to Amazon SP-API and pull my last 30 days of order data." Start there. Once you see your own data flowing, you'll immediately start thinking of 10 things you want to build.

You've been renting access to your own data long enough.

Most people run webinars completely wrong. In this episode of Marketing Misfits, hosts Norm Farrar and Kevin King pick the brain of the legendary Jason Fladlien, the man responsible for some of the biggest launches in internet history, including a $57 million webinar and massive 8-figure launches with Iman Gadzhi.

Jason breaks down the "Pitch Upfront" strategy, the psychology of delayed gratification, and how he consulted on Alex Hormozi’s $100M book launch. If you want to master the art of selling "one to many" and understand why context is king over content, this masterclass is for you.

Then be sure to subscribe to the brand new Market Misfits Newsletter too!

BDSS Dream 100 member Destaney Wishon recently broke down Amazon's newest AI-powered feature called "Interests," now out of beta, and it's worth paying close attention to.

You know the product discovery problem on Amazon? A shopper knows what they want but can't find it because they don't know the right keywords to type? Interests might actually be the solution to that.

Instead of only learning from what you buy, Amazon is starting to learn from what you're interested in. And that's a big difference.

How It Works

Interests lives inside the Amazon Shopping app (under the "Me" tab) and lets shoppers describe what they're looking for in plain, everyday language. Not keywords. Not product names. Just natural descriptions of what they want.

Think prompts like:

Amazon's LLMs then translate that natural language into search queries and product attributes behind the scenes. The AI takes a phrase like "premium skincare brands" and automatically maps it to specific brands in the category to surface relevant results.

It keeps working in the background, continuously scanning Amazon's catalog and proactively notifying you when new products, restocks, or deals show up that match your prompt. You set it and it watches for you, 24/7.

Why This Matters for Sellers

As Destaney pointed out, brands should absolutely keep an eye on this rollout. If shoppers start discovering products through interest-based prompts instead of keyword searches, the way you optimize your listings has to change.

Here's what to think about:

Your product titles, bullets, and descriptions need to sound like how real people talk, not like keyword-stuffed robots wrote them. "Best for sensitive winter skin" beats "gentle formula moisturizer cream hydrating." Think intent, not just index.

Your PDPs need to clearly communicate who the product is for and what problem it solves, because that's what the AI is trying to match against.

Customer Q&A sections and reviews are going to matter even more, since Amazon's AI likely pulls from that content to refine its recommendations.

And you need to think broadly about all the different reasons someone might want your product, not just the obvious ones. The wider the range of intents your listing speaks to, the more prompts it can potentially match.

Amazon is layering AI on top of AI at this point. Rufus, Shopping Guides, review highlights, and now Interests. The common thread is that Amazon wants to move shoppers away from basic keyword search and toward natural, conversational product discovery.

Luke Sutherland’s products were flying off the shelves. Reviews were stacking up. Business was booming. And it was about to destroy him.

The issue wasn’t demand. It was cash. Every dollar went right back into inventory, shipping, and PPC. "We had difficulty with traditional lenders who couldn’t see the inventory in our warehouse," Luke told me. "We had to use personal collateral to secure funding. We could never get enough inventory and were always chasing cash."

If you’ve sold on Amazon for more than a year, you know this cycle: sell fast, run low, scramble for cash, restock late, lose ranking, start over. It’s the hamster wheel that kills more 7-figure Amazon businesses than bad reviews ever will.

* * *

That’s what caught my attention about a product called Liquid Inventory from eCapital.

It’s a revolving credit line tied directly to the value of your inventory. As your inventory grows, your available credit grows with it. You only pay interest on what you actually draw, not on some fixed loan amount collecting dust.

Their system tracks your inventory levels in real time and adjusts your credit accordingly. It’s not a static number someone underwrote six months ago. For a seasonal seller gearing up for Q4, or scrambling when Amazon moves Prime Day up a month, that flexibility is everything.

I’ve been in this e-com space for 30 years. The MCA guys take a fat percentage of your revenue whether you’re having a good month or not. Traditional banks move at a glacial pace and don’t understand FBA. The inventory-linked revolving model is genuinely different because it aligns the lender’s risk with your actual business.

* * *

For Luke, the results speak for themselves. "We doubled our sales in 2025 and we anticipate 100% revenue growth in 2026. We’re better stocked and capturing more customers than when we were capital constrained."

Doubled sales. Not because he found a new product or cracked some algorithm. Because he could finally keep his best sellers in stock.

If you’re doing $1M+ on Amazon and you’ve ever lost a buy box because you stocked out, this is worth a look.

Learn more about Liquid Inventory

✌🏼 Have a great weekend.

See you again on Monday.

The answer to today’s STUMP BEZOS is
The global human influencer industry is $32 billion