Free Amazon tools
Everything I built for my own Amazon work and had no reason to keep — browser tools, read-only scripts, and the sheets.
Run it
Nothing you paste or upload is stored.
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Browser
Bulk campaign builder
A product and a keyword list in, a Sponsored Products bulk upload file out.
28/28 rows accepted by a live Ads account.
Open the tool -
Browser
Marketing Stream command generator
Region and dataset in; the AWS and Ads API calls to wire Stream V2 up out.
Every command was run against a live account.
Open the tool -
Python
Self-competition scanner
Finds where your own campaigns bid on the same search term, and prices the overlap.
Read-only: it never writes to your account.
Get the script -
Python
Negative keyword audit
Checks whether your negatives are blocking search terms that actually convert.
Read-only: it never writes to your account.
Get the script -
Browser
Wasted spend finder
The clicks that never converted, priced at what they cost you a month.
Parses in your browser: the report never leaves your machine.
Open the tool
Read it
Written from live accounts, not off the docs.
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PDF email
SP-API access checklist
Developer registration to a working refresh token, in Amazon's order.
Get it by email -
PDF
Three numbers, one truth
Seller Central, SP-API and Data Kiosk disagree. Which source is right, per metric.
Measured on a live account across two closed months.
Get the sheet -
Markdown email
Marketing Stream runbook
Firehose, IAM and subscriptions end to end — including why ACTIVE proves nothing.
Get it by email
In progress Bulk file validator · Negative keyword builder · SP-API & Ads API request builder · Marketing Stream cost calculator · Campaign naming linter · Amazon SP-API & Ads API skill for Claude Code · Bulk operations skill for Claude Code · Bulk upload, safely Want one of them sooner? Tell me →
Want the version that runs by itself?
These do one job on demand. The scheduled pipeline against the SP-API and Ads API is what I build for clients.