--- title: "Pantheon: vendor profile | Agent Ready Checklist" description: "Pantheon, a host or CDN: 0 of 3 checklist rows read are met by default, with 6 sourced facts, dated plans and what it does not do." canonical: https://agentreadychecklist.com/vendors/pantheon site: "Agent Ready Checklist" last_updated: 2026-11-05 section: "Vendors" --- # Pantheon: vendor profile | Agent Ready Checklist > Pantheon, a host or CDN: 0 of 3 checklist rows read are met by default, with 6 sourced facts, dated plans and what it does not do. Source: https://agentreadychecklist.com/vendors/pantheon Site: Agent Ready Checklist Last reviewed: 2026-11-05 Agent endpoints: https://agentreadychecklist.com/llms.txt (index), https://agentreadychecklist.com/openapi.json (API), https://agentreadychecklist.com/mcp (MCP server), https://agentreadychecklist.com/ask (search) Access: https://agentreadychecklist.com/auth.md (no key). Pricing: https://agentreadychecklist.com/pricing.md (free). # Pantheon Pantheon hosts WordPress and Drupal sites and serves its own crawler-blocking robots.txt and an X-Robots-Tag noindex header on pantheonsite.io platform domains. A site's own robots.txt appears only on the Live environment with a custom domain, so Dev and Test stay closed to agents apart from listed SEO testing bots. The pages read describe no markdown conversion. ## At a glance Type [Host or CDN](https://agentreadychecklist.com/vendors/by-type/host/) Homepage [pantheon.io](https://pantheon.io), answered HTTP 200 on 2026-11-05 Checklist rows 3 of 31 read: **0** supported, 2 partial, 1 no statement Last read 2026-11-05 ## What it does for this layer - Pantheon docs state that a custom or CMS-standard robots.txt "will only work in Live environments of a paid site with a custom domain". primary source: [docs.pantheon.io/bots-and-indexing](https://docs.pantheon.io/bots-and-indexing), read 2026-11-05 - Every Pantheon environment has a Pantheon-controlled robots.txt on its platform domain, such as dev-site-name.pantheonsite.io. primary source: [docs.pantheon.io/bots-and-indexing](https://docs.pantheon.io/bots-and-indexing), read 2026-11-05 - Pantheon's edge layer adds the X-Robots-Tag: noindex header to requests served from platform domains such as live-site-name.pantheonsite.io. primary source: [docs.pantheon.io/bots-and-indexing](https://docs.pantheon.io/bots-and-indexing), read 2026-11-05 - Pantheon says pantheonsite.io domains are intended for development use and cannot be used for production. primary source: [docs.pantheon.io/bots-and-indexing](https://docs.pantheon.io/bots-and-indexing), read 2026-11-05 - For pre-launch SEO testing, Pantheon lets a short list of bots, including Site Auditor by Raven, SEMrush and RogerBot by Moz, access platform domains. primary source: [docs.pantheon.io/bots-and-indexing](https://docs.pantheon.io/bots-and-indexing), read 2026-11-05 - Pantheon notes that Drupal and WordPress both generate their own robots.txt by default, which Pantheon serves only on a paid Live environment with a custom domain. primary source: [docs.pantheon.io/bots-and-indexing](https://docs.pantheon.io/bots-and-indexing), read 2026-11-05 ## Products and plans | Product | What it is | Price | As of | | --- | --- | --- | --- | | Pantheon WebOps platform | Managed hosting for WordPress and Drupal with Dev, Test and Live environments. | No price read | not read | ## Standards | Row | What it asks | Status | What the vendor's pages say | Source | | --- | --- | --- | --- | --- | | AR-FIND-01 | Do not block agents | partial | Platform domains block crawlers; a Live site on a custom domain serves the CMS robots.txt. | docs.pantheon.io/bots-and-indexing | | CF-MARKDOWN-NEGOTIATION | Markdown by Accept | no statement | No markdown conversion was found. | none | | VERCEL-ROBOTS-EXCLUSIONS | Robots exclusions | partial | Exclusions are applied by the platform on non-production domains. | docs.pantheon.io/bots-and-indexing | ## Checks on its own site | Reading | Result | Date | Source | | --- | --- | --- | --- | | Cloudflare scan of pantheon.io | 20 of 100, band L1 Basic Web Presence | 2026-11-05 | isitagentready.com | ## What it does not do - Pantheon does not let agents index or read pantheonsite.io platform domains, apart from listed SEO testing bots. - Pantheon does not serve a site's own robots.txt on Dev or Test environments. ## Related pages on this site Recipes [WordPress, Elementor](https://agentreadychecklist.com/platforms/wordpress-elementor/) ([checklist view](https://agentreadychecklist.com/platform/wordpress-elementor/checklist/)) Same recipe page [Elementor](https://agentreadychecklist.com/vendors/elementor/), [WooCommerce](https://agentreadychecklist.com/vendors/woocommerce/), [WordPress](https://agentreadychecklist.com/vendors/wordpress/), [WordPress.com](https://agentreadychecklist.com/vendors/wordpress-com/) Same type [Hosts and CDNs](https://agentreadychecklist.com/vendors/by-type/host/), [all vendors](https://agentreadychecklist.com/vendors/) ## Sources - [pantheon.io](https://pantheon.io)read 2026-11-05 - [docs.pantheon.io/bots-and-indexing](https://docs.pantheon.io/bots-and-indexing)read 2026-11-05 - [isitagentready.com](https://isitagentready.com/)read 2026-11-05 Edition Data 2026-11-04 Reviewed 2026-11-05 Spec AgentReady v2.0, 273d2d7 Crawl 13,071 rows, 2026-11-04 Ora 132 checks, contract 1.38.0, 2026-11-05 Verify with Ora The scanner this site recommends for the whole checklist. 132 checks, a score out of 100, no account. `npx ax@0.10 audit --min-score ` [Why Ora, and its limits](https://agentreadychecklist.com/verify-with-ora/) Method - [How rows, commands and rates are made](https://agentreadychecklist.com/method/) - [How an Ora check is matched to a row](https://agentreadychecklist.com/checklist/ora-checks/) - [Pass rates by rank band](https://agentreadychecklist.com/data/by-rank/) Sources and read dates sit at the foot of the page. Last reviewed 2026-11-05. AgentReady v2.0, read 2026-11-04.