www.costco.com

85/100

AI agent readiness for https://www.costco.com/, checked 2026-10-01 05:17 UTC.

Pass AI assistants may open this page (20/20)

robots.txt allows ChatGPT-User, Claude-User, Perplexity-User.

Pass AI search engines may index this page (15/15)

robots.txt allows OAI-SearchBot, Claude-SearchBot, PerplexityBot.

Pass The firewall lets AI agents in (20/20)

Requests that identify as ChatGPT-User, Claude-User, Perplexity-User, OAI-SearchBot, PerplexityBot all got the page.

Pass Content is readable without JavaScript (15/15)

The raw page has about 3244 words of text before any JavaScript runs.

Fail Structured data (JSON-LD) (0/10)

No JSON-LD found.

How to fix

Add JSON-LD from schema.org: Organization and WebSite on the home page, Product with an Offer (price and availability) on product pages.

Pass Title, description and language (5/5)

Title: "Welcome to Costco Wholesale".

Fail Sitemap (0/5)

No sitemap at /sitemap.xml or in robots.txt.

How to fix

Publish /sitemap.xml and list it in robots.txt with "Sitemap: https://.../sitemap.xml".

Pass Fast first response (5/5)

The page took 37 ms to load.

Pass Uses HTTPS (5/5)

The page is served over HTTPS.

Info llms.txt

No /llms.txt. Major AI agents do not rely on it yet, but it is cheap to add.

Info AI training crawlers

robots.txt allows the AI training crawlers we check.

Each AI agent

Agent	Type	robots.txt	Live request
ChatGPT-User (OpenAI)	Assistant (fetches pages for a user)	Allowed	ok (200)
Claude-User (Anthropic)	Assistant (fetches pages for a user)	Allowed	ok (200)
Perplexity-User (Perplexity)	Assistant (fetches pages for a user)	Allowed	ok (200)
OAI-SearchBot (OpenAI)	AI search index	Allowed	ok (200)
Claude-SearchBot (Anthropic)	AI search index	Allowed	not tested
PerplexityBot (Perplexity)	AI search index	Allowed	ok (200)
GPTBot (OpenAI)	AI training	Allowed	not tested
ClaudeBot (Anthropic)	AI training	Allowed	not tested
Google-Extended (Google)	AI training	Allowed	not tested
Applebot-Extended (Apple)	AI training	Allowed	not tested
CCBot (Common Crawl)	AI training	Allowed	not tested
meta-externalagent (Meta)	AI training	Allowed	not tested

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