--- title: "Fastly: vendor profile: Agent Ready HTML" description: "Fastly, a host or CDN: 0 of 6 standards stated as supported, 8 sourced facts, dated plans and what it does not do. Read 2026-11-05." canonical: https://agentreadyhtml.com/vendors/fastly/ site: "Agent Ready HTML" last_updated: 2026-11-05 section: "Vendors" --- # Fastly: vendor profile: Agent Ready HTML > Fastly, a host or CDN: 0 of 6 standards stated as supported, 8 sourced facts, dated plans and what it does not do. Read 2026-11-05. Source: https://agentreadyhtml.com/vendors/fastly/ Site: Agent Ready HTML Last reviewed: 2026-11-05 # Fastly: vendor profile In short Fastly published a Compute walkthrough on 2026-05-28 that uses Defuddle, Turndown and linkedom to convert pages, and a cold conversion takes a few hundred milliseconds. There is no one-click conversion, and the pages read describe no rendering of client-side JavaScript apps. Compute includes 10 million requests a month free. ## At a glance **standards.txt** fastly ```text llms-txt = no statement markdown-negotiation = partial markdown-twin = partial initial-html = no statement real-404 = no statement vary-accept = no statement ``` 0 supports, 2 partial or announced, 4 no statement. **Fastly** Host, CDN or edge product Edge cloud and CDN with Fastly Compute, a WebAssembly runtime where a small service can answer Accept: text/markdown or known AI crawlers with a cached markdown copy of the origin page. Type [Host, CDN or edge product](https://agentreadyhtml.com/vendors/by-type/host-or-cdn/) Home page [www.fastly.com](https://www.fastly.com/), answered HTTP 200 on 2026-11-05 Last read 5 November 2026 ## What it does for this layer - Fastly published "Give AI Agents the Markdown They Actually Want" on 2026-05-28, a walkthrough of a Fastly Compute service that serves agents a markdown version of the same page while normal requests pass to the origin. \[primary source, 2026-05-28\] [source](https://www.fastly.com/blog/give-ai-agents-markdown-they-actually-want), read 5 November 2026. - The Fastly example converts a page to markdown when the user agent matches one of 17 AI crawler patterns or the request sends Accept: text/markdown. \[primary source\] [source](https://www.fastly.com/blog/give-ai-agents-markdown-they-actually-want), read 5 November 2026. - The Fastly example also answers an explicit /md/ prefix with markdown regardless of headers, for debugging and spot checks. \[primary source\] [source](https://www.fastly.com/blog/give-ai-agents-markdown-they-actually-want), read 5 November 2026. - Fastly's example uses Defuddle for content extraction and Turndown for markdown, with linkedom providing the DOM inside the Compute JavaScript runtime. \[primary source\] [source](https://www.fastly.com/blog/give-ai-agents-markdown-they-actually-want), read 5 November 2026. - Fastly says a markdown conversion takes a few hundred milliseconds on a cold request and uses SimpleCache to cache the result at the edge. \[primary source\] [source](https://www.fastly.com/blog/give-ai-agents-markdown-they-actually-want), read 5 November 2026. - Fastly says a typical article in markdown compresses to 20 to 30 percent of its HTML size. \[vendor claim\] [source](https://www.fastly.com/blog/give-ai-agents-markdown-they-actually-want), read 5 November 2026. - Fastly pricing lists 10 million Compute requests a month free and usage-based tiers beyond that. \[primary source, 2026-11-05\] [source](https://www.fastly.com/pricing), read 5 November 2026. - Fastly's pricing page lists an AI Runtime Control product for routing, governance and observability of AI and agentic traffic at the edge, with 100,000 requests a month free. \[primary source\] [source](https://www.fastly.com/pricing), read 5 November 2026. ## Products and plans | Product | What it is | Price | As of | Source | | --- | --- | --- | --- | --- | | Fastly Compute | WebAssembly edge runtime where request handlers can read headers such as Accept and transform origin responses. | Usage-based, with a free allowance; 10 million Compute requests a month free | 2026-11-05 | source | | Fastly CDN (Full Site Delivery) | Content delivery with caching and VCL or Compute configuration. | Usage-based, with a free allowance; Free tier, Growth usage-based and Enterprise quote | 2026-11-05 | source | ## Standards | Standard | Status | What the vendor's pages say | Source | | --- | --- | --- | --- | | llms-txt | no statement | No llms.txt feature in the pages read. | none | | markdown-negotiation | partial | A Fastly blog example builds Accept: text/markdown handling on Compute; it is sample code, not a switch. | source | | markdown-twin | partial | The same example serves /md/ as markdown. | source | | initial-html | no statement | Fastly caches and serves the origin HTML; rendering is the origin's job. | none | | real-404 | no statement | Status codes pass through from the origin in the pages read. | none | | vary-accept | no statement | The blog excerpt read does not state the Vary header it sends. | none | ## Checks on its own site | Reading | Result | Date | | --- | --- | --- | | Home page request | HTTP 200; H1 in the initial HTML: yes; 1,294 words; 2 JSON-LD blocks | 2026-11-05 | | Request with Accept: text/markdown | HTTP 200, text/html, Vary: Accept-Encoding | 2026-11-05 | | /llms.txt at the host root | HTTP 200, text/plain, 16 KB, starts with an H1 | 2026-11-05 | | A made-up path | HTTP 404 | 2026-11-05 | | Ora score, cached | 70, grade B | 2026-10-16 | | Cloudflare keyless scan | 20, L1 Basic Web Presence | 2026-11-05 | | Shared crawl row | Tranco rank 6,999; home page HTTP 200; H1 in the HTML: yes; 1,747 words; JSON-LD types: Organization, Corporation; answers markdown: no; made-up path HTTP 404; llms.txt valid: yes | 2026-11-04 | ## What it does not do - Fastly has no one-click markdown conversion; the May 2026 blog post is code a customer deploys on Compute. - Fastly does not render client-side JavaScript apps into HTML for agents in the pages read. ## Related pages on this site - [Hosts, CDNs and edge products in this section](https://agentreadyhtml.com/vendors/by-type/host-or-cdn/) - [The Plain Fetch viewer](https://agentreadyhtml.com/viewer/) ## Sources 1. [Fastly: home page](https://www.fastly.com/) https://www.fastly.com/, read 5 November 2026 2. [Give AI Agents the Markdown They Actually Want | Fastly](https://www.fastly.com/blog/give-ai-agents-markdown-they-actually-want) https://www.fastly.com/blog/give-ai-agents-markdown-they-actually-want, read 5 November 2026 3. [Explore Fastly Pricing Tiers and Package Options | Fastly](https://www.fastly.com/pricing) https://www.fastly.com/pricing, read 5 November 2026 Last reviewed 5 November 2026 Edition Crawl 2026-11-04 Page updated 2026-11-05 Method How the viewer reads a page, how a file is graded and how a platform is scored: [the method page](https://agentreadyhtml.com/method/).