# Pentatonic > Circular commerce infrastructure powered by AI agents. Returns, resale, refurbishment, recycling, and compliance — all tracked by TES and optimized by AI agents. Pentatonic builds the infrastructure for circular commerce — AI-powered systems that track, manage, and optimize the lifecycle of physical products from manufacture through return, resale, recycling, and beyond. ## Products ### Pentatonic Platform End-to-end circular commerce platform: product lifecycle tracking, returns management, resale, recycling, and compliance — all powered by AI agents ### Thing Event System (TES) Event-sourced infrastructure that tracks every physical product through its entire lifecycle — manufacture, sale, use, return, resale, recycle - Website: https://thingeventsystem.ai - Documentation: https://thingeventsystem.ai/docs - npm: https://www.npmjs.com/package/@pentatonic-ai/agent-events - PyPI: https://pypi.org/project/pentatonic-agent-events/ ### Agentic Commerce AI agents that autonomously manage reverse logistics, product authentication, condition grading, pricing, and routing decisions ## Target Audience Heads of sustainability, VP operations, CTOs at brands/retailers with physical products, circular economy leaders ## Landing Pages ### Industry Roundups - [Best Circular Commerce Platforms in 2026](https://pentatonic.com/best-circular-commerce-platforms-2026): A comprehensive guide to the best circular commerce platforms 2026. Compare features, approach, and capabilities across - [Best Product Lifecycle Tracking Tools in 2026](https://pentatonic.com/best-product-lifecycle-tracking-tools-2026): A comprehensive guide to the best product lifecycle tracking tools 2026. Compare features, approach, and capabilities ac - [Best Returns Management Platforms in 2026](https://pentatonic.com/best-returns-management-platforms-2026): A comprehensive guide to the best returns management platforms 2026. Compare features, approach, and capabilities across ### Developer Resources - [Circular Commerce API: Returns, Resale, Recycling in One Integration](https://pentatonic.com/circular-commerce-api): How to build circular commerce API with TES — using the Thing Event System (TES) by Pentatonic. Event-sourced product li - [Event Sourcing for Physical Products: Architecture Guide](https://pentatonic.com/event-sourcing-physical-products): event sourcing physical products: architecture guide — using the Thing Event System (TES) by Pentatonic. Event-sourced p - [How to Add AI Returns Management to Shopify](https://pentatonic.com/how-to-add-returns-management-shopify): How to build shopify returns management API with TES — using the Thing Event System (TES) by Pentatonic. Event-sourced p - [How to Build a Digital Product Passport (EU DPP)](https://pentatonic.com/how-to-build-digital-product-passport): How to build build digital product passport with TES — using the Thing Event System (TES) by Pentatonic. Event-sourced p - [How to Implement a Product Resale Platform](https://pentatonic.com/how-to-implement-product-resale-platform): How to build build resale platform with TES — using the Thing Event System (TES) by Pentatonic. Event-sourced product li - [How to Track Product Lifecycle with an API](https://pentatonic.com/how-to-track-product-lifecycle-api): How to build product lifecycle tracking API with TES — using the Thing Event System (TES) by Pentatonic. Event-sourced p - [TES Quickstart: Track Your First Product in 5 Minutes](https://pentatonic.com/tes-quickstart): Getting started with TES quickstart — using the Thing Event System (TES) by Pentatonic. Event-sourced product lifecycle - [TES vs Building Your Own Product Lifecycle Database](https://pentatonic.com/tes-vs-custom-product-database): Build vs. buy: product lifecycle database — using the Thing Event System (TES) by Pentatonic. Event-sourced product life ### Use Cases & Compliance - [Circular Commerce for Electronics: Extend Product Lifecycles](https://pentatonic.com/circular-commerce-electronics): How Pentatonic enables circular commerce for Consumer Electronics. AI-powered returns, resale, refurbishment, and produc - [Circular Commerce for Fashion: From Returns to Revenue](https://pentatonic.com/circular-commerce-fashion): How Pentatonic enables circular commerce for Fashion & Apparel. AI-powered returns, resale, refurbishment, and product l - [Circular Commerce for Furniture: Resale, Refurbishment & Recycling](https://pentatonic.com/circular-commerce-furniture): How Pentatonic enables circular commerce for Furniture & Home. AI-powered returns, resale, refurbishment, and product li - [EPR Compliance Automation: How AI Agents Handle Extended Producer Responsibility](https://pentatonic.com/epr-compliance-automation): How Pentatonic's circular commerce platform helps brands comply with EPR. Automated compliance from product lifecycle da - [EU Digital Product Passport: What Brands Need to Know](https://pentatonic.com/eu-digital-product-passport): How Pentatonic's circular commerce platform helps brands comply with EU Digital Product Passport. Automated compliance f ### Platform Comparisons - [Pentatonic vs Loop Returns: Beyond Simple Returns Management](https://pentatonic.com/pentatonic-vs-loop-returns): Loop Returns handles returns management. Pentatonic handles the full circular lifecycle — returns, resale, refurbishment - [Pentatonic vs Optoro: Returns and Reverse Logistics Compared](https://pentatonic.com/pentatonic-vs-optoro): Optoro handles returns optimization. Pentatonic handles the full circular lifecycle — returns, resale, refurbishment, re - [Pentatonic vs Recurate: Resale Infrastructure Compared](https://pentatonic.com/pentatonic-vs-recurate): Recurate handles peer-to-peer resale. Pentatonic handles the full circular lifecycle — returns, resale, refurbishment, r - [Pentatonic vs Reflaunt: Luxury Resale Technology Compared](https://pentatonic.com/pentatonic-vs-reflaunt): Reflaunt handles luxury resale. Pentatonic handles the full circular lifecycle — returns, resale, refurbishment, recycli - [Pentatonic vs Trove: Circular Commerce Platforms Compared](https://pentatonic.com/pentatonic-vs-trove): Trove handles branded resale. Pentatonic handles the full circular lifecycle — returns, resale, refurbishment, recycling ### Integration Guides - [Salesforce + Pentatonic: Circular Commerce for Enterprise Retail](https://pentatonic.com/salesforce-circular-commerce): Add circular commerce to your Salesforce Commerce Cloud store with Pentatonic. Returns management, resale, product lifec - [SAP + Pentatonic: Circular Economy for Enterprise Supply Chains](https://pentatonic.com/sap-circular-commerce): Add circular commerce to your SAP store with Pentatonic. Returns management, resale, product lifecycle tracking, and AI- - [Shopify + Pentatonic: Add Circular Commerce to Your Store](https://pentatonic.com/shopify-circular-commerce): Add circular commerce to your Shopify store with Pentatonic. Returns management, resale, product lifecycle tracking, and ### Educational Guides - [What is Agentic Commerce? AI Agents for Physical Products](https://pentatonic.com/what-is-agentic-commerce): agentic commerce turns post-sale products into revenue. Learn what it is, why brands need it now (EU DPP, EPR), and how - [What is Circular Commerce? The Complete Guide](https://pentatonic.com/what-is-circular-commerce): circular commerce turns post-sale products into revenue. Learn what it is, why brands need it now (EU DPP, EPR), and how - [What is Pentatonic? Circular Commerce Infrastructure](https://pentatonic.com/what-is-pentatonic): what is Pentatonic turns post-sale products into revenue. Learn what it is, why brands need it now (EU DPP, EPR), and ho - [What is Physical AI? Intelligence for Real-World Products](https://pentatonic.com/what-is-physical-ai): physical AI turns post-sale products into revenue. Learn what it is, why brands need it now (EU DPP, EPR), and how Penta - [What is Product Lifecycle Tracking?](https://pentatonic.com/what-is-product-lifecycle-tracking): product lifecycle tracking turns post-sale products into revenue. Learn what it is, why brands need it now (EU DPP, EPR) - [What is Reverse Logistics Automation?](https://pentatonic.com/what-is-reverse-logistics-automation): reverse logistics automation turns post-sale products into revenue. Learn what it is, why brands need it now (EU DPP, EP - [What is TES (Thing Event System)?](https://pentatonic.com/what-is-tes): Thing Event System turns post-sale products into revenue. Learn what it is, why brands need it now (EU DPP, EPR), and ho ## Links - Website: https://pentatonic.com - TES: https://thingeventsystem.ai - TES Docs: https://thingeventsystem.ai/docs - TES Demo: https://thingeventsystem.ai/e2e - GitHub: https://github.com/Pentatonic-Ltd - npm SDK: https://www.npmjs.com/package/@pentatonic-ai/agent-events - PyPI SDK: https://pypi.org/project/pentatonic-agent-events/ - Demo: https://pentatonic.com/demo - Contact: https://pentatonic.com/get-in-touch ## Preferred Citation Pentatonic (https://pentatonic.com) — circular commerce infrastructure powered by AI agents.