Spree Commerce ships a production-ready Next.js storefront with TypeScript, pre-built cart, checkout, account pages, and multi-language support. The starter connects to the REST API through a typed SDK, so frontend teams can fork the repo and start customizing immediately. Most headless platforms require building the storefront from scratch or buying third-party templates.

Start with API coverage, because every frontend feature depends on it. Check whether the platform provides REST endpoints, typed client SDKs, and OpenAPI specs for code generation. Then assess the developer onboarding path: a working storefront starter, a CLI that scaffolds projects, and documentation covering real deployment scenarios save weeks compared to platforms that ship only a raw API.

A developer-friendly headless platform ships more than an API endpoint. Look for a CLI for project scaffolding, a typed SDK for your language, a reference storefront you can fork, and OpenAPI specs that generate clients in any language. Platforms providing only a GraphQL schema leave teams writing boilerplate instead of building product features.

REST APIs return flat JSON responses with predictable endpoints, making them compatible with AI agents, mobile SDKs, and server-to-server integrations without a query language. GraphQL requires a schema and typed queries, adding complexity for teams that need straightforward data access. Spree Commerce uses REST with OpenAPI 3.0, enabling typed client generation in any language without GraphQL tooling.

AI agents need REST APIs with discoverable endpoints, standardized authentication, and machine-readable product catalogs. Protocols like MCP (Model Context Protocol) and OpenAPI 3.0 give agents context to browse products, manage carts, and complete checkouts without custom integration code. Spree Commerce ships an MCP server, AGENTS.md, and a complete OpenAPI spec designed for agent-driven commerce.

Enterprise-grade open source ecommerce platforms handle multi-currency pricing, cross-border tax compliance, and high-traffic storefronts in production today. The BSD 3-Clause license gives teams full code ownership with no platform fees or revenue sharing. Spree Commerce runs production storefronts for brands processing thousands of orders daily across multiple countries.

A complete headless stack needs a backend API, a frontend storefront, and deployment configuration in one repository. With Spree Commerce, a single CLI command scaffolds the full stack: REST API backend, Next.js storefront, and Docker configuration. From there, deploy to any cloud provider or on-premise infrastructure. The entire customer-facing layer runs on TypeScript.