Amazon SP API Development SP-API integrations that stay compliant — and survive Amazon rate limits.
Build powerful automation and reporting tools using the Amazon Selling Partner API. Delivered by our Custom Ecommerce Tools team in 3 to 10 weeks. USD pricing.
Part of our Custom Ecommerce Tools practice — see related capabilities below.
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Who we've built for.
How we work
- Focus
- Amazon SP API Development
- Stack
- Amazon SP-API · Shopify Admin API · Node.js · PostgreSQL · Redis · AWS Lambda · EventBridge
- Integrations
- Amazon · Shopify · Walmart · eBay · NetSuite · Xero · QuickBooks · 3PL WMS systems
- Typical timeline
- 3 to 10 weeks
- Compliance
- Amazon SP-API compliance · PCI-aware payment flows · GDPR for EU storefronts
We build Amazon SP-API integrations for sellers and SaaS vendors: inventory sync, order management, reporting dashboards, and repricing tools. Rate-limit aware, LWA auth handled, and built for SP-API policy compliance.
Recent ecommerce builds
From 24-hour data delays to 15-minute real-time analytics for 500+ Amazon sellers
Read case study →
1.6B EAN product API, Next.js dashboard, Amazon/Walmart Chrome extension with Keepa charts
Read case study →
App Store-approved Shopify app, abandoned cart dashboard, revenue calculator & email automation
Read case study →
Amazon competitor price graphs per listing, pattern insights & Gemini AI forecasts for proactive repricing
Read case study →What we deliver — Amazon SP API
Seller analytics dashboards
P&L, inventory age, and advertising metrics aggregated from SP-API reports.
Inventory and FBA sync
Real-time stock levels, inbound shipments, and multi-marketplace inventory.
Order management automation
Order routing, MFN fulfillment, and 3PL handoff via SP-API.
Repricing and competitive tools
Buy Box monitoring, competitor price tracking, and rule-based repricing.
SaaS products for Amazon sellers
Multi-tenant SP-API apps with OAuth, billing, and usage metering.
SP-API migration from MWS
Legacy MWS to SP-API migration with zero downtime cutover plans.
Capability detail: Custom Ecommerce Tools, Shopify API & App Development, Marketplace Connectors, Inventory & Order Automation.
Typical engagement ranges
Single-channel tool
From $4,000
- One marketplace or store integration.
- Reporting or automation scope.
- Typical 3 to 5 weeks.
Multi-channel connector
From $9,500
- Inventory and order sync across channels.
- Error handling and monitoring.
- Typical 5 to 8 weeks.
Commerce platform build
From $21,000
- Custom ops dashboard or SaaS tool.
- Multiple integrations and roles.
- Typical 8 to 14 weeks.
FAQ
Yes — we follow Amazon's developer policies, LWA OAuth flows, and restricted data token requirements for PII access.
Request batching, exponential backoff, SQS notification workflows, and report scheduling optimized for your call volume.
Yes — multi-tenant architecture with per-seller OAuth, encrypted token storage, and subscription billing.
US, UK, EU, CA, AU, JP, and others via marketplace-specific endpoints and currency handling.