Tool catalogue: more than 60 tools running in my businesses
A catalogue of the tools I built with Claude Code for my own e-commerce operation. Every one runs in production: from listing and repricing through warehouse and invoicing to the helpdesk and AI agents.
Marketplaces & listings 7 tools
Listing Builder: multi-variant listing creator
Builds ready-to-publish listings with variations for eBay and Amazon from product data and detects the variations by SKU.
Listing publishing to 4 marketplaces
Lists and updates offers, including multi-variant ones, on eBay, Amazon, Allegro and Kaufland in one go via the official APIs.
Bulk listing in batches
Publishes prepared drafts in batches while respecting daily API limits, so the range grows quickly without manual work.
Listing Fetcher: import a listing from a link
Pulls an existing listing from its URL, normalises the data and creates an editable import job for the in-house catalogue.
Listing diagnostics and optimiser
Scans listing health, GPSR compliance and sales drops, then optimises titles, images and SEO.
Cross-selling on eBay
Adds a section of matching accessories with links to listing descriptions, which raises the basket value.
EAN code pool / GS1 reservation
Draws free EAN codes from the company's GS1 pool at listing time and assigns them to new SKUs.
Margin & repricing 5 tools
Margin controller with auto-repricing
Reacts to competitor offers and reprices listings (eBay/Amazon), always protecting the minimum margin and the set ranges.
Threshold calculator
Calculates target values and ranges so that the planned margin always remains after VAT and commission. Never below cost.
Actual commission and fee sync
Pulls actual commissions from the Amazon and eBay finance APIs and replaces the estimates, giving an exact net margin per line item.
Net margin analytics with break-even
Margin dashboard per SKU, channel and owner: daily net margin vs. break-even point, with alerts for sales below cost.
Automated recurring promotions
Analyses slow movers and bestsellers and publishes promotions with an expiry date.
Advertising & ROAS 7 tools
Real ROAS measurement (profit after ads)
Calculates ROAS as net profit per unit of ad spend, plus the break-even budget, and recommends: scale up, hold, improve or pause.
SKU-level ROAS
Tracks ad spend per order line: ROAS and net margin down to the individual product.
Monthly ROAS dashboard
Brings monthly spend, sales and ROAS from Amazon, Google and eBay together in a single view.
AI advertising adviser
Scans campaigns and keywords for low ROAS and wasted budget and proposes changes.
Ad campaign sync
Pulls campaign and keyword performance daily from all accounts (Amazon/eBay/Google).
Promoted Listings audit
Classifies promoted listings (dead / clicks without sales / impressions without clicks) and pinpoints the budget drains.
Executor for approved ad changes
Once a person signs off, applies the changes (pauses, keywords, budgets) directly via the ad platforms’ APIs.
Orders & B2B 6 tools
B2B order coordination panel
Manages the order flow to the supplier (pending → shipped → invoiced) with intra-EU supply invoices and status tracking.
B2B fulfilment with shipment splitting
Matches line items to warehouse stock and the B2B catalogue and proposes the best split: ship from stock or dropship.
Daily order review
Order list with a time window, flags for items without a purchase cost and alerts for negative margins.
Automated multi-channel order import
Pulls newly paid orders (Allegro/Gambio) into the system every hour, with multipack handling.
B2B configurator for alu fences and gates
Assembles a project cost estimate with a bill of materials (BOM) and proposes a listing structure.
B2B returns logistics portal PL↔DE
Parcel registration, billing periods, invoicing and contract generation for cross-border returns.
Warehouse & logistics 9 tools
Central stock hub
One stock level, synced automatically to every channel (eBay, Amazon, Allegro, Gambio), with no overselling.
Stock sync queue
A queue of stock changes with request limits, duplicate removal and retries for failed operations.
Real-time stock updates
Deducts stock the moment a sale happens and restores it on return: no overselling and no manual corrections.
Separate rattan inventory (by the metre)
Matting tracked in running metres: delivery intake, cutting with best-roll selection and turnover alerts.
Stock replenishment adviser
Calculates stock levels, fragmentation and 30- and 60-day sales velocity and shows when to reorder material.
Virtual product bundles
Sells bundles: stock is the minimum across components, and each component is deducted on sale.
Stock transfers and adjustments
Panel for moving stock between warehouses and logging deliveries, with a full event log.
Cloud print queue (warehouse printers)
Central print queue for invoices, labels and pick lists on the warehouse printers, with retries and a log.
Pick list generator
Packing list PDF with an order QR code, sorted by shelf location and ready to print.
Invoicing & finance 5 tools
B2B invoicing and payments panel
Tracks invoices and payments by business partner, with separate views for outstanding and paid.
Intra-EU invoicing pipeline with archiving
Parses intra-EU supply invoice PDFs from tickets, archives them to the cloud and rebuilds the consolidated invoice register.
Invoice auto-printing with a safety net
Every invoice is queued for printing automatically, and a separate check adds any that were missed. No invoice gets lost.
Credit note control
Periodically scans settlements and flags cancelled or returned orders that have no correction issued.
Monthly P&L after advertising
Combines net margin with actual ad spend per platform, without double counting, and shows the real profit after ads.
Customer service 4 tools
Multichannel helpdesk
Requests from email and Messenger, categorisation, AI reply suggestions, response-time monitoring and spam detection.
Live-chat widget with autoresponder
Website chat that emails the customer when no agent is available, instead of losing the message.
Full customer history and knowledge base
Merges orders and requests into one customer history view and supports the team with an internal knowledge base.
Helpdesk data retention (GDPR)
Periodically anonymises old tickets and deletes attachments in line with GDPR.
Team & permissions 2 tools
Team task board (kanban)
IT, product and organisation tasks in a kanban layout, with comments for the team.
Roles and permissions system
Layered access that protects sensitive data such as purchase costs, with a role management panel.
Content & AI 5 tools
AI listing content generator
AI writes titles, descriptions, bullet points and keywords tailored to each platform, based on product data.
AI image and infographic generator
Creates product images and numbered infographics with AI image models for use in listings.
Amazon A+ Content generator
AI builds A+ modules (hero, comparisons, infographics) and publishes them via SP-API.
Video clip generator (image-to-video)
Turns product photos into short marketing clips while preserving the product's geometry.
Central AI task queue and agents
A queue for long-running AI tasks with a panel, agents that use tools, and usage tracking.
Analytics & dashboards 7 tools
Operations dashboard with daily targets
Daily AI briefing, day-by-day order target tracking, target streaks and inventory value on a single screen.
Daily anomaly detector
Flags daily deviations in sales, margin, channels and ads, with an assessment of the revenue impact.
Per-SKU sales advisers
Combines 12 months of sales, advertising, prices and margin into AI recommendations for Amazon and eBay listings.
YoY sales targets and forecast
Calculates monthly year-over-year revenue targets broken down by channel, feeding the dashboard.
Internal sales reports
Generates monthly inter-company sales reports with CSV export.
Returns and inventory value analytics
Tracks returns per SKU and channel, the sales mix by source, and inventory value and turnover.
Niche finder for eBay.de and Amazon.de
Checks demand and competition on eBay.de and Amazon.de every day, scores niches and emails the best candidates.
Integrations & infrastructure 9 tools
Marketplace developer integrations
Direct, authorised connection to the eBay, Amazon, Allegro and Kaufland APIs: listing, stock and settlements with no middleman.
Advertising developer integrations
Connects ad accounts for multiple brands (Amazon Ads/Google Ads) to read results and manage campaigns.
Platform and website integrations
Pulls orders, syncs stock and imports B2B catalogues from platforms and websites.
Internal API for agents
Internal, token-protected API for notifications and remote operations by AI agents.
Access protection and encryption
Renews authorisations before they expire and warns about problems; access credentials are encrypted with key rotation.
2FA / TOTP for the admin panel
Two-factor TOTP login with a QR code and backup codes for panel users.
Self-healing system supervisor
A service that monitors the system, fixes common failures on its own and keeps a change log.
Infrastructure monitoring
Scheduled tasks, error logs, server health and error triage (Sentry) in one panel.
Gambio → marketplace SKU mapping
Maps Gambio SKU aliases to marketplaces with quantity caps and lead times, alongside Magnalister.
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