Founder-led · Amazon SP-API & Ads API
Custom Amazon software that runs the strategy your tools can't.
Dayparting, client reporting, P&L and order automation on the SP-API and Ads API, for agencies and multi-account sellers. Fixed price, built in weeks, and the code is yours.
Shahzeb Khan, founder. I write the code myself and
reply to every enquiry within 12 hours.
Selected work
Real products, shipped and running.
A few builds you can go look at — from a full agency app to multi-channel sync and marketplace PII tooling.
Advertising & ops app for an agency
Built a full-fledged app for Kiloverse — data pipelines through to the dashboards their team runs on every day.
adsilio.com Multi-channel automationAmazon · Etsy · Walmart, in sync
Unified and automated data across marketplaces into one sync layer feeding reporting and hands-off automations.
sellsyncly.com SP-API · Restricted dataBuyer-PII tooling for FBM sellers
Legally pull buyer name + shipping address for merchant-fulfilled orders using SP-API Restricted Data Tokens.
Read the walkthroughIn their words
"It really exceeded my expectations."
Minti runs Amazon for multiple large brands at Kiloverse across the US and EU marketplaces. Third-party dayparting tools couldn't express the strategies his team actually wanted to run — so we built the thing that could.
"We were lacking functionality with third-party tools to apply our strategies. You really helped us implement our real strategies and improve the ROAS, ACoS, profitability and revenues. It was a great achievement for our team."
"I'm going to be honest — I wasn't expecting much at first. But what you've done really exceeded my expectations. You delivered more than I was really asking for."
Minti
Head of Amazon BD, Kiloverse
Recorded after the first working version shipped. The build has since grown into the app their team uses day to day — adsilio.com.
Who we help
Built for teams running more than one Amazon account.
Agencies, brands, vendors and multi-marketplace sellers: anyone whose Amazon work has outgrown spreadsheets and per-seat software.
Agencies
Client reporting that refreshes hourly, bulk operations, and dayparting rules your PPC software can't express, on tooling you own instead of renting per seat.
PPC automation for agencies →Brand owners
Brands scaling on Amazon. Custom dashboards, inventory and order sync, and advertising automation, so the team stops pasting exports into spreadsheets.
SP-API development →Vendor Central
1P vendors. Clean RRA pipelines, PO tracking, chargeback monitoring, and one report that puts retail and advertising data side by side.
Vendor reporting →Multi-marketplace sellers
Amazon plus eBay, Etsy, Walmart or Shopify. Orders, listings, labels and one P&L across every channel, instead of five dashboards that never agree.
Marketplace API guides →What we do
Build software that shortens your to-do list.
Amazon-focused tools, from Marketing Stream pipelines to SP-API integrations and custom dashboards. Working software, delivered into your own accounts.
SP-API integrations
Orders, inventory, catalog, financials and buyer-PII (RDT) workflows, synced to your warehouse with retries and throttling handled.
Python · LWA · Reports API · Restricted Data Tokens
Ads API & Marketing Stream
Hourly campaign data through Marketing Stream, report automation, and AMC queries, from API approval to a dashboard the PPC team uses.
Ads API · Firehose · BigQuery · AMC SQL
PPC automation & dayparting
Rules, guardrails, dry runs, approvals and an audit log. The same control room that runs hourly bidding for a multi-client PPC manager.
Ads API · Scheduler · Slack alerts
Vendor Central reporting
RRA and retail analytics pipelines for 1P vendors, refreshed on a schedule, reconciled, and backfilled when Amazon hiccups.
SP-API · BigQuery · Looker Studio
Dashboards & real P&L
Per-account, per-ASIN profit with your actual costs layered in, because Data Kiosk netProceeds is not profit. Real price ranges in the guide.
Data Kiosk · COGS · Looker / Metabase
Multi-marketplace & shipping
eBay, Etsy, Walmart and Shopify alongside Amazon, plus FedEx, DHL and USPS labels and tracking. Four auth models, one system.
OAuth · Carrier APIs · Sync workers
Recent builds
Case studies
What was built, why the off-the-shelf option didn't fit, and what changed.
Automation
Hourly dayparting control room for a multi-client PPC manager
Built a custom tool for hourly ad-ops across multiple clients (budgets, rules, guardrails, logs) — a one-time build that replaced expensive third-party tooling and turned “hourly babysitting” into …
✓ Rule-based hourly ops instead of manual checks
Read the case study →Data pipelines
Vendor reporting: AMS + RRA pipelines (Alclear, Germany)
Delivered two production pipelines: Amazon Marketing Stream (AMS) in AWS for near real-time advertising signals, plus vendor retail reporting (RRA) pulls via SP-API to BigQuery — unified in …
✓ One dashboard combining ads + retail signals
Read the case study →Ops
Data integrity watchdogs for a multi-account marketplace platform
A sync that silently stops looks exactly like a quiet sales day. Built a five-layer integrity system — prevention at write, daily self-heal, weekly marketplace reconciliation, alerting, and …
✓ Silent data failures surface in hours, not months
Read the case study →Build logs & lessons
Databaaba on YouTube
Short breakdowns of marketplace tooling, automations, and behind-the-scenes experiments.
Marketing Stream
Amazon Marketing Stream — full setup
Push hourly Sponsored Products data straight into AWS. Complete Firehose + IAM walkthrough.
Data pipelines
Store AMS data in BigQuery (S3 → GCP)
Move a year of hourly ad data from S3 into BigQuery, then out to Sheets for the PPC team.
SP-API
Unlock buyer PII with Restricted Tokens
Pull real buyer name + shipping address legally with the SP-API Restricted Data Token flow.
SP-API
Amazon SPP setup for developers (2026)
Verify, register and manage apps in the Solution Provider Portal, start to finish.
Ads API
Get Amazon Ads API access
LWA → approval → tokens → first Profiles call, step by step for direct advertisers.
SP-API
SP-API access on Seller Central
Create the app client, pick roles, and generate your refresh token.
Guides
Latest from the blog
Step-by-step guides on Amazon SP-API, the Ads API, and Marketing Stream — written from real builds.
Amazon Ads API
7 min readAmazon Ads API Rate Limits Explained (And How to Stop Hitting Them)
A 429 storm from the Amazon Ads API almost always means your retry logic is wrong, not that your limits are too low. Here's how the per-endpoint token buckets actually work, what the response headers tell you, and the request patterns that keep you comfortably under the limit.
Amazon SP-API
8 min readThe SP-API Reports Pattern Everyone Gets Wrong (Async, Step by Step)
The SP-API Reports API is asynchronous — request, poll, download, decompress — and most broken integrations either treat it like a synchronous call or poll it straight into a throttle. Here's the correct four-step flow, the status states that trip people up, and the gzip gotcha at the end.
Amazon Ads API
7 min readCustom PPC Automation vs Pacvue & Perpetua: an Honest Comparison
I build custom Amazon PPC automation for a living and I still tell most people to buy the SaaS. Here's a straight comparison of custom builds versus tools like Pacvue and Perpetua — what each does better, the real cost math, and how to tell which side of the line you're actually on.
Available for new builds
Tell me the one job you'd automate first.
Send a note about your Amazon stack and the workflow that eats the most hours. I'll reply personally within 12 hours with a plan: what to build, what to skip, and what it costs. The price is fixed before any work starts.