E-commerce Platforms arenaBuyer checklist

Every requirement we judge e-commerce platforms products against, as a ready-to-send RFP checklist — with each item's priority, why it matters, and how the top-ranked products score on it today.

54 requirements · 14 themes · verdicts for 5 products · updated 2026-09-16 · priorities mirror the story weights our scoring uses (methodology)

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# E-commerce Platforms — buyer checklist (RFP)

Derived from ProductArena's evidence-graded user-story taxonomy for E-commerce Platforms: 54 judged requirements. Priorities mirror story weights (3 = must-have, 2 = should-have, 1 = nice-to-have).

## Agenticness

- [ ] **[must-have]** Plug MCP servers into this product so it can use their tools
- [ ] **[must-have]** Connect an agent via an official MCP server
- [ ] **[must-have]** Drive the product through a documented public API
- [ ] **[must-have]** Delegate tasks to a built-in AI assistant inside the product
- [ ] **[should-have]** Point an agent at llms.txt or agent-oriented docs
- [ ] **[should-have]** Run the product headlessly / in CI for automation
- [ ] **[should-have]** Use an official CLI
- [ ] **[should-have]** Issue scoped/least-privilege API credentials for an agent
- [ ] **[should-have]** Build against official SDKs
- [ ] **[should-have]** Subscribe to events via webhooks
- [ ] **[should-have]** Get AI-generated insights and suggestions from my data inside the product
- [ ] **[should-have]** Set up automations that run autonomously in the background
- [ ] **[should-have]** Operate the product with natural-language commands
- [ ] **[should-have]** Explore an interactive API reference with runnable examples
- [ ] **[should-have]** Download a machine-readable API spec (OpenAPI or equivalent)
- [ ] **[should-have]** Rely on versioned APIs with a documented deprecation policy
- [ ] **[nice-to-have]** Test against a sandbox environment without touching production data

## Ai commerce

- [ ] **[must-have]** A shopping agent can discover my store's products and build carts through a documented agent-commerce endpoint on the store (MCP/UCP), not by scraping
- [ ] **[should-have]** My products are discoverable by AI agents and answer engines through a cross-merchant catalog or feed built for agents
- [ ] **[should-have]** An agent can take an order through its post-purchase lifecycle — status, fulfillment, returns — via documented APIs and webhooks without a human in the admin

## Automation depth

- [ ] **[must-have]** Define rules that trigger actions automatically on events
- [ ] **[should-have]** Perform bulk operations across many items at once
- [ ] **[should-have]** Schedule recurring jobs or workflows
- [ ] **[nice-to-have]** Version, review, and roll back my automations

## B2b wholesale

- [ ] **[should-have]** Sell B2B and wholesale — customer-specific price lists, volume pricing, quotes or net-terms invoicing — alongside DTC

## Catalog inventory

- [ ] **[must-have]** Model products with variants, options, and custom fields/metafields that fit my catalog, not a fixed template
- [ ] **[should-have]** Bulk import, export, and edit the catalog — CSV or API — without touching products one at a time
- [ ] **[should-have]** Inventory tracks across multiple locations with stock adjustments and fulfillment from the right warehouse

## Checkout conversion

- [ ] **[must-have]** Customize checkout — fields, branding, discounts, and validation logic — through supported extension points rather than forking checkout
- [ ] **[should-have]** Buyers can pay with accelerated wallets — Apple Pay, Google Pay, PayPal, platform one-click — without re-entering details
- [ ] **[nice-to-have]** Abandoned carts and checkouts trigger recovery emails or links so I can win the sale back

## Extensibility apps

- [ ] **[must-have]** Extend my store from a marketplace of vetted apps and extensions covering the long tail of features
- [ ] **[should-have]** Build custom apps and extensions with official SDKs, scaffolding tooling, and a documented review/distribution path
- [ ] **[should-have]** Inject custom backend logic — discounts, shipping rules, validation — as serverless functions or hooks that run inside the platform

## Headless apis

- [ ] **[must-have]** Manage the full commerce lifecycle programmatically — create products, edit orders, issue refunds, trigger fulfillments — through the admin API
- [ ] **[must-have]** Build a fully custom headless storefront on a documented storefront API or first-party frontend framework

## Multi channel

- [ ] **[should-have]** List and sync products to external channels — marketplaces, social commerce, shopping feeds — from one catalog
- [ ] **[should-have]** Sell internationally with localized storefronts, multi-currency pricing, translations, and duties handled
- [ ] **[should-have]** Sell in person with a point-of-sale that shares the same catalog, inventory, and customers as my online store

## Openness

- [ ] **[must-have]** Export all of my data in open formats and leave
- [ ] **[must-have]** Self-host the core product
- [ ] **[should-have]** Do everything through the API that I can do in the UI
- [ ] **[should-have]** Read the product's source under an open license

## Payments

- [ ] **[must-have]** Take payments with the platform's integrated processing — published card rates, payouts, and fraud tooling — without wiring a third-party gateway
- [ ] **[should-have]** Choose among third-party payment gateways and charge in multiple currencies when the built-in option doesn't fit

## Privacy posture

- [ ] **[must-have]** Prevent my data from being used to train AI models
- [ ] **[should-have]** Choose where my data is stored (region/residency)
- [ ] **[should-have]** Control data retention and deletion
- [ ] **[should-have]** Opt out of telemetry and usage tracking

## Storefront experience

- [ ] **[must-have]** Launch a polished storefront from professionally designed themes and customize layout, sections, and branding without code
- [ ] **[should-have]** Customize storefront code with a documented templating layer, local preview, and version-controlled theme deploys
- [ ] **[nice-to-have]** Manage content — pages, blogs, media — alongside my products from the same admin

## Taxes shipping

- [ ] **[should-have]** Checkout shows live carrier rates and I can buy labels and track shipments from the platform
- [ ] **[should-have]** Sales tax and VAT are calculated automatically per jurisdiction, with rates kept current and reports I can file from

---

Source: https://ultrametric.ai/productarena/arena/ecommerce-platforms (evidence-graded verdicts for 5 products) · methodology: https://ultrametric.ai/productarena/methodology

Chips show the top 5 ranked products' current verdict on each requirement — ✓ full · ~ partial · ! disputed · — none · n/a not applicable.

Agenticness — how well agents can access and operate the productAgenticness· 17 items

How well agents can access and operate the product

ai-native userPlug MCP servers into this product so it can use their tools
Core requirement — weighs 3× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
must-have
ai-native userConnect an agent via an official MCP server
Core requirement — weighs 3× in arena scoring · 3 of 5 products fully deliver this today
WooCommerce Shopify Medusa BigCommerce Swell
must-have
ai-native userDrive the product through a documented public API
Core requirement — weighs 3× in arena scoring · all 5 products fully deliver this today
WooCommerce Shopify Medusa BigCommerce Swell
must-have
ai-native userDelegate tasks to a built-in AI assistant inside the product
Core requirement — weighs 3× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
must-have
ai-native userPoint an agent at llms.txt or agent-oriented docs
Important, not disqualifying — weighs 2× in arena scoring · 3 of 5 products fully deliver this today
WooCommerce Shopify Medusa BigCommerce Swell
should-have
ai-native userRun the product headlessly / in CI for automation
Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
should-have
ai-native userUse an official CLI
Important, not disqualifying — weighs 2× in arena scoring · 4 of 5 products fully deliver this today
WooCommerce Shopify Medusa BigCommerce Swell
should-have
ai-native userIssue scoped/least-privilege API credentials for an agent
Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
should-have
ai-native userBuild against official SDKs
Important, not disqualifying — weighs 2× in arena scoring · 3 of 5 products fully deliver this today
WooCommerce Shopify Medusa BigCommerce Swell
should-have
ai-native userSubscribe to events via webhooks
Important, not disqualifying — weighs 2× in arena scoring · 4 of 5 products fully deliver this today
WooCommerce Shopify Medusa BigCommerce Swell
should-have
ai-native userGet AI-generated insights and suggestions from my data inside the product
Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
should-have
ai-native userSet up automations that run autonomously in the background
Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
should-have
ai-native userOperate the product with natural-language commands
Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
should-have
ai-native userExplore an interactive API reference with runnable examples
Important, not disqualifying — weighs 2× in arena scoring · 2 of 5 products fully deliver this today
WooCommerce Shopify Medusa BigCommerce Swell
should-have
ai-native userDownload a machine-readable API spec (OpenAPI or equivalent)
Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
should-have
ai-native userRely on versioned APIs with a documented deprecation policy
Important, not disqualifying — weighs 2× in arena scoring · 1 of 5 products fully deliver this today
WooCommerce Shopify Medusa BigCommerce Swell
should-have
ai-native userTest against a sandbox environment without touching production data
Differentiator, not a dealbreaker — weighs 1× in arena scoring · 2 of 5 products fully deliver this today
WooCommerce Shopify Medusa BigCommerce Swell
nice-to-have

Ai commerce — stories about ai commerce in this arenaAi commerce· 3 items

Stories about ai commerce in this arena

ai-native userA shopping agent can discover my store's products and build carts through a documented agent-commerce endpoint on the store (MCP/UCP), not by scraping
Core requirement — weighs 3× in arena scoring · 2 of 5 products fully deliver this today
WooCommerce Shopify Medusa BigCommerce Swell
must-have
ai-native userMy products are discoverable by AI agents and answer engines through a cross-merchant catalog or feed built for agents
Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
should-have
ai-native userAn agent can take an order through its post-purchase lifecycle — status, fulfillment, returns — via documented APIs and webhooks without a human in the admin
Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
should-have

Automation depth — how much of the product can run unattendedAutomation depth· 4 items

How much of the product can run unattended

ai-native userDefine rules that trigger actions automatically on events
Core requirement — weighs 3× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
must-have
ai-native userPerform bulk operations across many items at once
Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
should-have
ai-native userSchedule recurring jobs or workflows
Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
should-have
ai-native userVersion, review, and roll back my automations
Differentiator, not a dealbreaker — weighs 1× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
nice-to-have

B2b wholesale — stories about b2b wholesale in this arenaB2b wholesale· 1 item

Stories about b2b wholesale in this arena

merchantSell B2B and wholesale — customer-specific price lists, volume pricing, quotes or net-terms invoicing — alongside DTC
Important, not disqualifying — weighs 2× in arena scoring · 1 of 5 products fully deliver this today
WooCommerce Shopify Medusa BigCommerce Swell
should-have

Catalog inventory — stories about catalog inventory in this arenaCatalog inventory· 3 items

Stories about catalog inventory in this arena

merchantModel products with variants, options, and custom fields/metafields that fit my catalog, not a fixed template
Core requirement — weighs 3× in arena scoring · 1 of 5 products fully deliver this today
WooCommerce Shopify Medusa BigCommerce Swell
must-have
operations leadBulk import, export, and edit the catalog — CSV or API — without touching products one at a time
Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
should-have
operations leadInventory tracks across multiple locations with stock adjustments and fulfillment from the right warehouse
Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
should-have

Checkout conversion — stories about checkout conversion in this arenaCheckout conversion· 3 items

Stories about checkout conversion in this arena

developerCustomize checkout — fields, branding, discounts, and validation logic — through supported extension points rather than forking checkout
Core requirement — weighs 3× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
must-have
merchantBuyers can pay with accelerated wallets — Apple Pay, Google Pay, PayPal, platform one-click — without re-entering details
Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
should-have
merchantAbandoned carts and checkouts trigger recovery emails or links so I can win the sale back
Differentiator, not a dealbreaker — weighs 1× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
nice-to-have

Extensibility apps — stories about extensibility apps in this arenaExtensibility apps· 3 items

Stories about extensibility apps in this arena

merchantExtend my store from a marketplace of vetted apps and extensions covering the long tail of features
Core requirement — weighs 3× in arena scoring · 1 of 5 products fully deliver this today
WooCommerce Shopify Medusa BigCommerce Swell
must-have
developerBuild custom apps and extensions with official SDKs, scaffolding tooling, and a documented review/distribution path
Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
should-have
developerInject custom backend logic — discounts, shipping rules, validation — as serverless functions or hooks that run inside the platform
Important, not disqualifying — weighs 2× in arena scoring · 1 of 5 products fully deliver this today
WooCommerce Shopify Medusa BigCommerce Swell
should-have

Headless apis — stories about headless apis in this arenaHeadless apis· 2 items

Stories about headless apis in this arena

developerManage the full commerce lifecycle programmatically — create products, edit orders, issue refunds, trigger fulfillments — through the admin API
Core requirement — weighs 3× in arena scoring · 3 of 5 products fully deliver this today
WooCommerce Shopify Medusa BigCommerce Swell
must-have
developerBuild a fully custom headless storefront on a documented storefront API or first-party frontend framework
Core requirement — weighs 3× in arena scoring · all 5 products fully deliver this today
WooCommerce Shopify Medusa BigCommerce Swell
must-have

Multi channel — stories about multi channel in this arenaMulti channel· 3 items

Stories about multi channel in this arena

merchantList and sync products to external channels — marketplaces, social commerce, shopping feeds — from one catalog
Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
should-have
merchantSell internationally with localized storefronts, multi-currency pricing, translations, and duties handled
Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
should-have
merchantSell in person with a point-of-sale that shares the same catalog, inventory, and customers as my online store
Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
should-have

Openness — open source, data portability, and self-hosting storiesOpenness· 4 items

Open source, data portability, and self-hosting stories

ai-native userExport all of my data in open formats and leave
Core requirement — weighs 3× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
must-have
ai-native userSelf-host the core product
Core requirement — weighs 3× in arena scoring · 2 of 3 products fully deliver this today
WooCommerce Shopify Medusa BigCommerce Swell
must-have
ai-native userDo everything through the API that I can do in the UI
Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
should-have
ai-native userRead the product's source under an open license
Important, not disqualifying — weighs 2× in arena scoring · 2 of 4 products fully deliver this today
WooCommerce Shopify Medusa BigCommerce Swell
should-have

Payments — stories about payments in this arenaPayments· 2 items

Stories about payments in this arena

merchantTake payments with the platform's integrated processing — published card rates, payouts, and fraud tooling — without wiring a third-party gateway
Core requirement — weighs 3× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
must-have
merchantChoose among third-party payment gateways and charge in multiple currencies when the built-in option doesn't fit
Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
should-have

Privacy posture — data-handling and privacy storiesPrivacy posture· 4 items

Data-handling and privacy stories

ai-native userPrevent my data from being used to train AI models
Core requirement — weighs 3× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
must-have
ai-native userChoose where my data is stored (region/residency)
Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
should-have
ai-native userControl data retention and deletion
Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
should-have
ai-native userOpt out of telemetry and usage tracking
Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
should-have

Storefront experience — stories about storefront experience in this arenaStorefront experience· 3 items

Stories about storefront experience in this arena

merchantLaunch a polished storefront from professionally designed themes and customize layout, sections, and branding without code
Core requirement — weighs 3× in arena scoring · 1 of 5 products fully deliver this today
WooCommerce Shopify Medusa BigCommerce Swell
must-have
developerCustomize storefront code with a documented templating layer, local preview, and version-controlled theme deploys
Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
should-have
merchantManage content — pages, blogs, media — alongside my products from the same admin
Differentiator, not a dealbreaker — weighs 1× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
nice-to-have

Taxes shipping — stories about taxes shipping in this arenaTaxes shipping· 2 items

Stories about taxes shipping in this arena

operations leadCheckout shows live carrier rates and I can buy labels and track shipments from the platform
Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
should-have
merchantSales tax and VAT are calculated automatically per jurisdiction, with rates kept current and reports I can file from
Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet
WooCommerce Shopify Medusa BigCommerce Swell
should-have

Full evidence behind every verdict lives on the arena page and each product page — chips above deep-link straight to the judged story.

🛒E-commerce Platforms arenaBuyer checklist

🤖Agenticness — how well agents can access and operate the productAgenticness· 17 items

✨Ai commerce — stories about ai commerce in this arenaAi commerce· 3 items

⚙️Automation depth — how much of the product can run unattendedAutomation depth· 4 items

🛒B2b wholesale — stories about b2b wholesale in this arenaB2b wholesale· 1 item

🛒Catalog inventory — stories about catalog inventory in this arenaCatalog inventory· 3 items

💳Checkout conversion — stories about checkout conversion in this arenaCheckout conversion· 3 items

🔌Extensibility apps — stories about extensibility apps in this arenaExtensibility apps· 3 items

🔌Headless apis — stories about headless apis in this arenaHeadless apis· 2 items

💬Multi channel — stories about multi channel in this arenaMulti channel· 3 items

🔓Openness — open source, data portability, and self-hosting storiesOpenness· 4 items

💳Payments — stories about payments in this arenaPayments· 2 items

🔒Privacy posture — data-handling and privacy storiesPrivacy posture· 4 items

🛒Storefront experience — stories about storefront experience in this arenaStorefront experience· 3 items

🌐Taxes shipping — stories about taxes shipping in this arenaTaxes shipping· 2 items