Does BigCommerce support llms.txt?

Not natively as of mid-2026. Serve llms.txt via a redirect to a WebDAV-hosted file or an edge worker in front of your store, and keep it plain text at yourdomain.com/llms.txt.

How do I improve BigCommerce structured data for AI agents?

Stencil themes emit base Product JSON-LD. Extend it with GTIN, shippingDetails and MerchantReturnPolicy via theme edits or Script Manager, then verify with a scanner rather than assuming the theme covers it.

SellToAgents

Platform guide · BigCommerce · Updated July 2026

BigCommerce AI visibility: the pragmatic setup

Direct answer: BigCommerce sits between Shopify (everything native) and WooCommerce (everything manual). Stencil themes give you base Product schema; you add the agent-grade extras — GTIN, shipping/returns markup, llms.txt via WebDAV or edge, FAQ schema — and verify with a free scan.

Five jobs for BigCommerce merchants

robots.txt: check Settings → Store setup — confirm GPTBot, OAI-SearchBot, ClaudeBot, PerplexityBot and Google-Extended aren't blocked by a bot-management preset.
Schema: extend Stencil's Product JSON-LD with GTIN, shippingDetails, MerchantReturnPolicy (theme file or Script Manager).
llms.txt: no native route — host the file via WebDAV and 301 /llms.txt to it, or serve it from an edge worker. Generate one free here.
Feed: keep your Google feed clean (GTINs, availability); it doubles as your agent-facing catalog.
FAQ: publish shipping/returns/sizing FAQs with FAQPage schema — the most-quoted structure in AI answers.

Verify in one pass

All 19 signals, free, 10 seconds.

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