E-commerce AI engineering studio
We wire Seller Central into Claude. MCP servers, SP-API integrations and ads automation for marketplace brands — built by the studio behind seven of them.
What's my real margin on B08XVJ2LHR after fees?
→ get_order_true_profit ✓ 287ms
31.4% — $8.92 per unit after FBA, referral fees and ad spend. Down 2.1pp from last month.
Which campaigns are eating it?
→ get_tacos_by_asin ✓ 341ms
Two Sponsored Display campaigns running 19% over your ACOS target. Want bids reduced?
We ship to sellers on
The productized offer
The Base MCP Server connects Amazon Ads and SP-API to any MCP client — Claude, Claude Code, Cursor. Ask in plain language, get answers from your real account data.
> Where did we waste ad spend last week?
> Which ASINs are about to run out of FBA stock?
> Negate every keyword with zero orders this month.
Base MCP Server
$789 one-time
Ads + SP-API, deployed and handed over. Fixed price, fixed scope — yours to keep. No monthly platform fee, no data tax.
Onboarded through Amazon's official authorization flow as an Amazon-approved third-party developer. You can revoke access anytime from Seller Central.
Need automation rules, daily audits, Google Ads, Shopify or Mercado Libre connectors? That's custom work we scope on a call.
How it works
A 30-minute onboarding call. You authorize SP-API and Ads access through Amazon's standard consent flow — no passwords, no scraping.
We stand up your MCP server — on your VPS or hosted by us — wired to your account, secured with token auth and a full call log.
"Which keywords wasted spend last week?" "What's my real margin on this ASIN?" Claude answers with your live data — not a stale export.
What we build
Your account data behind Claude — from the $789 base server to 130-tool production deployments with automation rules.
Amazon SP-API, Amazon Ads, Google Ads, Shopify, Mercado Libre, eBay, Walmart — synced into the systems you already run.
Internal tools, pipelines and bots that replace the spreadsheet and the copy-paste ritual behind it.
From spec to paying subscribers — we've shipped full products like RepriceLab on this exact playbook.
Campaign operations backed by software — search-term negation, dayparting, bid rules, daily audits.
Listing, PPC and store audits; SP-API fee checks; a technical second opinion before you commit to a build.
Selected work
7 engagements · 5 live today
Andy Anand Chocolates · RepriceLab · HeadBlade · SellAnalytix · Gun Planet · Florin · Dubstream
MCP · Live
130-tool MCP server for a DTC chocolatier — SP-API, Amazon Ads, Google Ads and ShipStation behind one Claude interface, with daily audit reports and automation rules.
→ Whole ad account managed by prompt — 177k keywords under watch.
SaaS · Live
Buy Box monitoring and automated repricing across 12+ Amazon marketplaces — three strategies, competitor intelligence, real-time SP-API notifications.
→ Live at repricelab.com with paying subscriptions.
MCP · Live
OAuth 2.1 MCP server and BigQuery warehouse for the DTC grooming brand — orders, listings, finances and returns ingested from SP-API, queryable from Claude.
→ Live at mcp.headblade.com — 4 marketplaces ingesting daily.
Unified SP-API + Marketing Stream + warehouse into a real-time analytics layer.
→ Removed ~6 hours of weekly manual reconciliation per analyst.
Two-way inventory and order sync between Shopify and a regulated marketplace.
→ Eliminated CSV uploads; error rate under 0.5%.
Amazon Ads operations with a consulting partner — Sponsored Products campaigns for a German consumer brand, run through our warehouse MCP tooling on amazon.de.
→ Newest engagement — campaigns under management now.
Our own SP-API scaffold — the foundation the Base MCP Server ships on.
→ Cut client onboarding from ~5 days to ~1.
Spreadsheets are not a system. Your ops deserve software.
Aggregate impact
15k+
Hours saved / month
Across the client portfolio
130
MCP tools in production
On a single live client server
99.9%
Sync accuracy
Marketplace ↔ system of record
7
Marketplaces shipped
Amazon, eBay, Walmart, Target, ML, Kaufland, Allegro
Verified clients
"Leo is a remarkable PHP Amazon SP-API developer. He balances coding precision with key business objectives. His delivery, especially in AWS server and database intricacies, was exceptional."
"Leopoldo provided expert guidance on the Amazon Selling Partner API. His professionalism, responsiveness, and deep knowledge were greatly appreciated. A five-star service."
Beyond the base
Custom integrations, automation, internal tools and embedded engineering — the same team that ships the base server.
from $12k
Fixed scope, fixed price. An integration, a pipeline, an internal tool — specified, shipped, handed over.
$6k/mo
Ongoing engineering capacity. We run, extend and improve your stack — audits, automations, new tools each month.
$20k/mo
A senior pod inside your team — your roadmap, your standups, our marketplace depth. US/EU timezone aligned from Montevideo.
FAQ
Access is granted through Amazon's official third-party authorization flow — we never see your password, and you can revoke it from Seller Central anytime. The base server ships read-focused; anything that writes to your account is opt-in, and every single call is logged to an audit ledger.
An active Seller Central account and 30 minutes. On the onboarding call you authorize SP-API and Amazon Ads access; we handle everything else, including the MCP client setup on your side (Claude, Claude Code or Cursor).
Your choice: we deploy to a VPS you own, or we host it for you. Either way it's secured with bearer-token auth over HTTPS and only your MCP clients can reach it.
That's the point. The base ships on the same platform as our 130-tool production server — automation rules, daily audit reports, Google Ads, ShipStation, Shopify and multi-marketplace support are all custom extensions we scope as project or retainer work.
Let's talk
One email. Tell us what eats your team's hours — we reply within a business day with a diagnosis and, if it makes sense, a call slot.
hello@dubstream.co