Commerce Layer

API infrastructure for autonomous commerce and AI agents.

· for mid-market

Commerce Layer exposes cart, checkout, inventory, and order APIs that AI agents and composable storefronts can call directly, letting brands sell across any surface an LLM or custom frontend reaches. It targets engineering-led teams at mid-market and enterprise retailers rebuilding commerce on a headless stack, particularly those piloting agentic checkout flows where a shopping agent needs programmatic access to pricing, stock, and payment capture.

> pick this if

Pick this if you're an engineering-led mid-market or enterprise retailer rebuilding on a composable stack and want commerce primitives an AI agent can call as cleanly as your storefront does.

> look elsewhere if

Look elsewhere if you're a Shopify or BigCommerce merchant without a dedicated platform team — you'll pay for headless flexibility you won't use and inherit integration work the SaaS suites already solve.

> Commerce Layer is built for

platform-agnostic

> what it does for ecommerce

Exposes checkout and cart primitives consumable by autonomous shopping agents
Handles multi-market pricing, tax, and currency through a single API
Supports subscription billing alongside one-time transactional order flows
Tracks inventory across warehouses and stores in real time
Runs headless behind any storefront, kiosk, or conversational interface

> how you'd use it

Global apparel brand, $200M GMV, 30-engineer commerce platform team
Replatforming from SFCC to a composable stack where the storefront, mobile app, and a ChatGPT-based shopping agent all hit the same cart and checkout APIs across 14 markets
→ Single source of pricing, tax, and inventory across surfaces; agent-driven checkout pilot ships in one quarter without forking commerce logic per channel
DTC supplements brand, $40M GMV, 6 engineers and a fractional CTO
Running a Next.js storefront with subscription billing and adding an AI concierge that places reorders and modifies subscriptions on behalf of logged-in customers
→ Agent calls Commerce Layer's order and subscription endpoints directly, removing the custom middleware the team previously maintained between Stripe, the CMS, and their 3PL
Luxury marketplace operator, $80M GMV, 15-person product and engineering org
Building an agentic concierge that negotiates bundles and captures payment across a network of boutique inventory feeds
→ Multi-warehouse inventory and price list APIs let the agent quote and reserve stock in real time without batch syncs to a monolith

> Commerce Layer use cases

> how commerce layer compares

bidirectional editorial

StoryblokStoryblok handles content and now exposes it to agents; Commerce Layer handles transactions, so they solve different halves of a headless stack rather than compete.

> alternatives to Commerce Layer in our index

by shared use-case