Arxos

Arxos for Amazon sellers

Arxos is an Account Managementservice for sellers operating on Amazon Seller Central. We take the daily, repetitive work that comes with running a Seller Central account — answering buyer messages, recovering customers who bounce before checkout, tracking inventory toward stockouts, reconciling Amazon's fee structure into a clean Net-of-Fees view — and run it through a suite of AI Operators that act in the seller's own brand voice.

Each Operator drafts its work for human approval first, then graduates to autonomous action one trust tier at a time as the seller's confidence in it grows. The goal is a Seller Central account that effectively runs itself, with the seller stepping in only when something genuinely needs judgment — a refund decision, a partnership request, an unusually angry customer.

What we offer

Arxos connects to a seller's Amazon Seller Central account via the Amazon Selling Partner API (SP-API) with View-only role access across the categories below. We do not need write access to anything that moves money or changes pricing; all actions that do are performed by the seller after human review.

Customer messages — Triage

Triage reads inbound buyer-seller messages on Amazon (as well as Gmail and the on-site help widget if the seller uses those), classifies each message into a clear category (order status, discount request, FSA/HSA inquiry, return, partnership, complaint, other), drafts a reply in the seller's brand voice, and either sends or escalates based on the seller's configured trust tier. Safe categories like order-status replies auto-send at T2+; anything involving money, refunds, or unresolved complaints always escalates regardless of tier.

Cart recovery — Closer

Closer surfaces buyers who showed clear purchase intent but didn't complete checkout (abandoned carts, multi-visit product-page hits, repeat questions about a specific SKU) and sends personalized recovery messages on the seller's behalf. Recovery campaigns are capped at three back-and-forth exchanges or seven days, whichever comes first, so no buyer is pursued past the point of usefulness.

Inventory + orders — Quartermaster

Quartermaster tracks FBA inventory levels per SKU, predicts the exact stockout date based on velocity, and drafts purchase orders sized to the supplier's MOQ with landed cost already filled in. When the seller ships in to FBA, Quartermaster prepares the shipment plan from the SP-API and reconciles received units against the plan.

Fees + margin — Bookkeeper

Amazon's fee structure (referral, FBA, storage, long-term storage, returns, advertising) is opaque by default. Bookkeeper pulls fee totals through the SP-API Finances endpoint, computes Net-of-Fees per SKU and per day, and shows the seller their real take-home margin instead of gross revenue. It also forecasts cash flow forward to give early warning on lean periods.

Listing + content — Maven

Maven monitors listing health (suppressed listings, missing attributes, Buy Box loss, search-rank drift) and drafts content updates for the seller to approve and push back to Amazon.

Account health watchdog — Sentinel

Sentinel monitors the seller's Amazon Seller Central account health continuously — Order Defect Rate, Late Shipment Rate, Valid Tracking Rate, Pre-fulfillment Cancel Rate, listing-policy violations, suppressed listings, and overall account standing. When any metric drifts toward an Amazon-enforced threshold, Sentinel surfaces the trend to the seller in advance of the official warning, alongside a suggested action drawn from Amazon's own policy documentation.

Sentinel reads account-health, performance, customer-service, and feedback data through View-only scopes (Account Health, Customer Services Reports, Customer Experience Metrics, Voice of the Customer, Feedback). Arxos does not modify any account-health setting, dispute any policy violation, or interact with Amazon's appeals process on the seller's behalf — those actions remain with the seller and the seller's designated representative. Sentinel's Amazon-side surface is in active development, with initial dashboards already in use by the founding-cohort sellers described in the case studies below.

Advertising and promotions analytics — Amplify

The Amplify operator family watches the marketing spend driving traffic to the seller's Amazon listings — Sponsored Products bids and budgets, coupon and promotion performance, Prime Exclusive Discount ROI, and price-discount conversion — alongside the seller's organic listing performance. Amplify surfaces which campaigns produce profitable orders versus which burn budget without conversion, and highlights promotions where the seller's discount depth is eroding margin faster than it is moving units.

Amplify draws on read-only access to the seller's bid, daily-budget, promotion, coupon, Prime Exclusive Discount, and price-discount data inside Seller Central to build the analytics view. Amplify does not modify any campaign, bid, budget, or discount on the seller's behalf — every recommendation is surfaced to the seller, who executes the change themselves directly in Seller Central or in Amazon Advertising. The Amplify Amazon-advertising surface is in active development and rolling out to the early-access cohort through the current development cycle.

How a seller benefits

  • Time recovered. A typical Arxos customer reports 5–15 hours per week of routine customer-message work removed from their plate inside the first month.
  • Faster reply time. Triage drafts a reply within seconds of a message arriving, so even on the human-approval tier, the seller is sending replies in minutes instead of hours or days.
  • Recovered sales. Closer brings back buyers who would otherwise be lost — recovered revenue typically pays for the Arxos subscription several times over within the first billing cycle.
  • Stockout prevention. Quartermaster catches dwindling FBA stock before the listing goes out-of-stock and loses its Best Seller Rank.
  • Real margin clarity.Bookkeeper's Net-of-Fees view eliminates the "I thought we made money this month" problem that plagues Amazon sellers reading gross revenue alone.
  • Brand voice preserved.Every Operator drafts in the seller's own brand voice, learned from their existing historical replies. The seller's customers don't feel like they're talking to a generic AI.

Credentials and expertise

Arxos is built by a small team of working ecommerce operators who run two active 7-figure ecommerce brands of their own — one a wellness brand on Amazon FBA + Shopify, the other a food and beverage brand on Shopify. The product was originally built to manage those brands' own Seller Central and Shopify operations, then opened up as a service for other sellers in the same position. Every feature in Arxos has been run in production against a real Amazon Seller Central account before being offered to outside customers.

Operational credentials

  • Founded: Midfluence LLC was formed in Delaware on January 25, 2022 (file number 6591206) specifically to operate the Arxos service.
  • Active seller experience: The team operating Arxos manages live FBA inventory, daily buyer-seller messages, and recurring Amazon fee reconciliation on their own brand — meaning the people who build Arxos are also full-time Amazon sellers using their own product.
  • Multi-channel coverage: Beyond Amazon, Arxos ships an active integration with Shopify (Custom App, App Store path in progress) so a single seller can run Amazon and Shopify side-by-side in one operations dashboard.

Technical credentials

  • SP-API integration:Active Login with Amazon (LWA) integration, OAuth 2.0 refresh-token flow, View-only granular permissions across Inventory & Order Tracking, Amazon Fulfillment, Selling Partner Insights, Finance & Accounting, and Advertising (read-only bid, budget, promotion, coupon, and discount data for Amplify analytics). Two specific financial reports — Sales Tax Report and Seller Fee Invoices — are accessed at the Edit tier because Amazon's permission model offers no View tier on these PII-restricted reports; Arxos performs read operations only on this data, with no tax filings, fee disputes, or write actions of any kind. AWD permission requested for forward roadmap.
  • No write access requested. Arxos does not need and does not request write permissions for refunds, pricing, or listing edits. Any action that moves money or changes a listing is performed by the seller after Arxos drafts it for human review.
  • Stack: Next.js 16 + Node.js + Postgres (Supabase) on Vercel. Authentication via Clerk. All seller credentials encrypted at rest using libsodium secretbox keyed per environment.
  • Tenant isolation:Every database query is scoped to the seller's tenant ID. Connection tokens, messages, orders, and inventory data never cross between customer accounts. See our Privacy Policy for the full data-handling specification.
  • Incident response: Security issues are routed to security@joinarxos.com and acknowledged within one business day. Verified incidents are scoped, contained, and disclosed to affected sellers per the timelines in the Privacy Policy.

The Shopify-to-Amazon complexity gap

Most Shopify-native ecommerce brands hit the same wall when they evaluate Amazon. The reach, storage, and fulfillment Amazon FBA offers is obviously valuable — but the daily operations cost of running both channels feels prohibitive. Two sets of buyer messages. Two sets of inventory. Two sets of fees. Two completely different reporting surfaces. The brand either stays Shopify-only and accepts the growth ceiling, hires a dedicated Amazon operations person they can't yet justify, or pushes the existing team into burnout trying to manage both channels by hand.

Arxos closes that gap. By unifying buyer messages, inventory, margin analytics, and brand-voice replies across Shopify and Amazon into a single operations dashboard run by AI Operators, Arxos makes Amazon FBA a viable second channel for a brand that couldn't otherwise afford a full-time Amazon hire. The two case studies below are exactly this story — both are brands that started Shopify-native, hit the Amazon-launch complexity wall, and used Arxos to bridge it.

Success stories

Case Study — Tundra Tribe (premium wellness, US)

Brand: Tundra Tribe (tundratribe.com) — a US premium wellness brand selling specialty hardware to end consumers and a small practitioner community. Founded Shopify-native; previously self-managed fulfillment from a leased US warehouse.

Challenge:Tundra Tribe wanted Amazon FBA distribution to expand reach beyond the brand's direct Shopify audience and to outsource the storage and shipping work the team was running in-house. The blocker was operational capacity: launching on Amazon meant a second buyer-message inbox, a second inventory system, a second fee structure to reconcile every month, and listing health to monitor — none of which the existing two-person operations team had bandwidth to absorb.

Solution:The brand onboarded to Arxos before the Amazon launch. Bookkeeper modeled per-SKU unit margin under Amazon's referral + FBA fee structure so the team could commit to the launch with a real margin floor in hand instead of a guess. Quartermaster took over FBA inventory tracking on day one of Amazon shipments, predicting stockout dates from velocity and triggering reorder alerts. Triage drafted replies to inbound Amazon buyer-seller messages in Tundra Tribe's established brand voice (learned from the team's prior Shopify customer-support history). Closer ran cross-channel cart recovery for both Shopify and Amazon-side abandoned buyers.

Result (illustrative metrics from active use):

  • Time from Arxos onboarding to first live FBA shipment: approximately 28 days.
  • 11-SKU FBA portfolio now managed end-to-end by the brand's existing two-person operations team, with zero additional ops headcount added for the Amazon launch.
  • Daily operations time required for the Amazon channel today: under 30 minutes (mostly Triage approvals).
  • Average buyer-message reply time on Amazon: under 15 minutes from arrival to send, down from an estimated 8+ hours under the previous manual workflow.
  • Unexpected stockouts in the first six months of FBA operations: zero, attributed to continuous velocity-based stockout prediction.
  • Amazon now contributes roughly a quarter of total brand monthly revenue with no incremental hiring.

“The Amazon channel was a black box for us until we onboarded to Arxos. Bookkeeper was the unlock — we could finally see what each SKU was actually netting after Amazon took its cut, which made the launch decision a math problem instead of a gamble. Day-to-day, Quartermaster watches FBA stock so we don't lose Best Seller Rank to a preventable stockout, and Triage drafts replies in our voice so the team isn't living in two inboxes. We added a full second channel without adding a single hire.”

— Tundra Tribe operations team

Case Study — Denali Canning (shelf-stable food & beverage, US)

Brand: Denali Canning (denalicanning.com) — a US shelf-stable food and beverage brand selling canned consumables direct-to-consumer through Shopify. Self-managed fulfillment, growing daily order volume, evaluating an Amazon FBA launch for category expansion.

Challenge:Denali Canning is in the position Arxos was built for. The brand wants Amazon's reach but is in the "is this worth the operational cost?" decision phase that paralyzes most Shopify-native sellers. Shelf-stable food has category-specific FBA prep requirements; ungated category entry takes time; per-unit margin under Amazon's fee structure is non-obvious without modeling. The brand needed a way to model the launch end-to-end before committing to FBA inbound, and a way to keep the existing Shopify channel running cleanly during the evaluation.

Solution:Denali Canning runs Arxos on its active Shopify channel as primary daily operations infrastructure — Triage drafts customer support, Quartermaster tracks warehouse inventory, Bookkeeper produces the unified margin view — while the team uses Arxos's analytics surface in parallel to pre-model the Amazon launch: projected unit margin across SKUs after referral + FBA fees, expected inbound shipment cadence, expected buyer-message volume by category, and Amazon category-eligibility status per SKU. The brand will flip the Amazon connection live once readiness metrics clear internal thresholds.

Result (illustrative metrics from active use):

  • Routine Shopify operations time recovered per week: approximately 8 hours, redirected to product development and brand growth work.
  • Inventory forecasting moved from a manual monthly spreadsheet to a continuous, velocity-aware live dashboard with stockout horizons surfaced per SKU.
  • Amazon launch readiness modeling completed inside two weeks of Arxos onboarding — Bookkeeper's fee-structure model surfaced two SKUs whose Amazon unit margin would have been underwater under current pricing. Those SKUs were repriced before launch instead of after.
  • Buyer-message reply time on the active Shopify channel: consistently under 15 minutes, with Triage handling category routing and brand-voice drafts.
  • Amazon FBA launch decision moved from gut-feel to a data-backed go/no-go gated on specific margin and inventory thresholds — exactly the pre-launch analytics work most Shopify-native brands skip and regret.

“Arxos is the analytics layer we didn't know we were missing on Shopify, and it's the reason we're finally confident enough to launch on Amazon. Bookkeeper caught two SKUs that would have lost money on FBA at our current price — we never would have spotted that ahead of time on our own. Quartermaster turned inventory from a spreadsheet into a live dashboard. For an ecommerce founder weighing the move to Amazon, Arxos closes the loop that stops most of us from making the jump.”

— Denali Canning team

Verifiable on request

Amazon Solution Provider Portal reviewers and prospective customers may request a verification reference for either case study above. Email support@joinarxos.com from a verifiable Amazon or Amazon-affiliated email address and we will arrange a confidential reference call with the seller operations team.

How to get started

New Amazon sellers can connect their Seller Central account from the Arxos commerce page using the "Connect Seller Central" OAuth flow once Amazon's public-app approval is in place. In the meantime, sellers interested in being part of the early Arxos cohort can email support@joinarxos.com to be added to the access list.

Legal entity

The Arxos service is provided by Midfluence LLC, a Delaware limited liability company (file number 6591206, registered office: 221 N. Broad St, Suite 3A, Middletown, DE 19709). See our About page for the full company information.