You can build your own Amazon keyword rank tracker the same day now. All you need is a good Amazon scraper API + Claude Code.
No SaaS subscription, no waiting on a roadmap. Here's the whole thing in three steps.
❶ Get an API key
Grab an Asgard API key — it's the data layer that returns real-time organic and sponsored ranks for any keyword and marketplace. This is the part that's genuinely hard to build yourself (residential IPs, retries, CAPTCHA, parsing), so you let the API handle it and build everything else on top.
❷ Let Claude run the scraper every day
Point Claude Code at your list of keywords and have it hit the search endpoint on a schedule. A prompt as simple as this gets you a working script:
Build me a Node script that:
- reads keywords.csv (columns: asin, keyword, zip)
- for each row, calls the Asgard /amazon/search endpoint
- extracts my ASIN's organic rank + sponsored rank
- appends the result with today's date to ranks.csv
Then add a cron entry so it runs every morning at 7am.Claude writes the fetch calls, the CSV handling, and the cron job. You just paste your API key.
❸ Have Claude display a heatmap
Ask Claude to render ranks.csv as a heatmap — one row per keyword, one column per day, colored green (top rank) to red (buried). Now you can see at a glance which keywords are climbing and which are slipping, day over day.
The real point: you can customize it for YOU
This is why building your own beats a generic tool. When you own the code, you decide exactly what to track:
- Mobile ranks, not just desktop — yes, you can pull mobile-phone ranks separately (a lot of people don't know this). If your buyers are on the app, that's the rank that matters.
- Location-specific ranks — want to see ranks only from NYC & CA because that's where your customers are? Lock the zip codes and track exactly that.
- Whatever matters to YOU — your keywords, your marketplaces, your cadence. No feature requests, no waiting.
In the end, what makes competitive intel valuable is that others don't have the same. An off-the-shelf dashboard gives everyone the same view. Your own tracker gives you the exact slice nobody else is looking at.
There's so much more you can build with this — ranks data was just one example.
Play around and see what you can make.