--- title: "Redocly: vendor profile: Agent Ready HTML" description: "Redocly, a docs platform: 3 of 6 standards stated as supported, 15 sourced facts, dated plans and what it does not do. Read 2026-11-05." canonical: https://agentreadyhtml.com/vendors/redocly/ site: "Agent Ready HTML" last_updated: 2026-11-05 section: "Vendors" --- # Redocly: vendor profile: Agent Ready HTML > Redocly, a docs platform: 3 of 6 standards stated as supported, 15 sourced facts, dated plans and what it does not do. Read 2026-11-05. Source: https://agentreadyhtml.com/vendors/redocly/ Site: Agent Ready HTML Last reviewed: 2026-11-05 # Redocly: vendor profile In short Redocly writes llms.txt and clean .md copies by default, and one setting, llmstxt.hide, removes both. Sitemaps, canonical links and JSON-LD wait for the owner: no siteUrl in redocly.yaml means no sitemap, and no jsonLd object means no structured data. Annual billing puts Pro at $249 a month. ## At a glance **standards.txt** redocly ```text llms-txt = supports markdown-negotiation = no statement markdown-twin = supports initial-html = supports real-404 = no statement vary-accept = no statement ``` 3 supports, 0 partial or announced, 3 no statement. **Redocly** Docs platform Redocly is a docs-as-code platform for API docs whose sites ship llms.txt, clean .md copies, markdown on Accept: text/markdown, an MCP server and WebMCP tools, with sitemaps, canonical links and JSON-LD driven by redocly.yaml. Type [Docs platform](https://agentreadyhtml.com/vendors/by-type/docs-platform/) Home page [redocly.com](https://redocly.com/), answered HTTP 200 on 2026-11-05 Last read 5 November 2026 ## What it does for this layer - Redocly says Redoc began at Rebilly, a Texas payments company that wrote its own documentation tool after Swagger UI let it down, and that Redocly later launched as a paid SaaS. \[vendor claim\] [source](https://redocly.com/about), read 5 November 2026. - Redocly writes /sitemap.xml and adds rel=canonical links only once siteUrl is set in redocly.yaml, and on versioned projects only the default version is marked canonical. \[primary source\] [source](https://redocly.com/docs/platform/content/realm-seo), read 5 November 2026. - Redocly emits JSON-LD only when the owner writes a jsonLd object in redocly.yaml or page front matter and picks the Schema.org type. \[primary source\] [source](https://redocly.com/docs/platform/content/realm-seo), read 5 November 2026. - Redocly validates links and redirects while content is added, and its built-in CI/CD jobs stop a project with link errors from publishing. \[primary source\] [source](https://redocly.com/docs/platform/content/realm-seo), read 5 November 2026. - Redocly's llmstxt.hide option switches off both llms.txt and the clean Markdown copies of the pages it lists, and it defaults to false. \[primary source\] [source](https://redocly.com/docs/platform/config/seo), read 5 November 2026. - Redocly's llmstxt.excludeFiles setting takes file paths or glob patterns such as docs/\*\*/\*.md, including negated globs, to keep pages out of llms.txt. \[primary source\] [source](https://redocly.com/docs/platform/config/seo), read 5 November 2026. - Redocly marks WebMCP experimental and publishes tools such as search\_docs, read\_page and navigate\_page automatically; browser support is an origin trial in Chrome 149 and Edge 150. \[primary source\] [source](https://redocly.com/docs/platform/customization/webmcp), read 5 November 2026. - Redocly's Visibility tag targets a block at humans or at agents and decides what reaches the Markdown version of a page. \[primary source\] [source](https://redocly.com/docs/platform/ai-ready), read 5 November 2026. - Redocly's Realm changelog lists faster server-side rendering for OpenAPI reference pages with heavily reused schemas, confirming reference pages render on the server. \[primary source\] [source](https://redocly.com/docs/platform/changelog-realm), read 5 November 2026. - Redocly Pro costs $249 a month billed annually, $2,988 a year, with unlimited seats, readers and Git contributors and an MCP server for the docs. \[primary source, 2026-11-05\] [source](https://redocly.com/pricing), read 5 November 2026. - Redocly charges $390 a year for each project beyond the 3 in Pro or the 10 in Scale, the $729-a-month plan billed annually. \[primary source, 2026-11-05\] [source](https://redocly.com/pricing), read 5 November 2026. - On 2026-11-05 Redocly returned markdown for redocly.com/docs/platform/ai-ready when asked with Accept: text/markdown, yet the only Vary value it sent was Cookie. \[observed, 2026-11-05\] [source](https://redocly.com/docs/platform/ai-ready), read 5 November 2026. - Appending .md to redocly.com/docs/platform/content/realm-seo on 2026-11-05 returned HTTP 200 text/markdown of 5,184 bytes. \[observed, 2026-11-05\] [source](https://redocly.com/docs/platform/config/seo), read 5 November 2026. - A made-up path under redocly.com/docs returned HTTP 404 text/html on 2026-11-05 even when the request asked for text/markdown. \[observed, 2026-11-05\] [source](https://redocly.com/docs/platform/content/realm-seo), read 5 November 2026. - Redocly's own SEO docs page carried no application/ld+json block in its initial HTML on 2026-11-05, in line with JSON-LD being opt-in. \[observed, 2026-11-05\] [source](https://redocly.com/docs/platform/content/realm-seo), read 5 November 2026. ## Products and plans | Product | What it is | Price | As of | Source | | --- | --- | --- | --- | --- | | Redocly Pro | Docs platform with 3 projects, protected docs, interactive API docs, custom domain, MCP server and an AI assistant. | From USD 249; Pro, per month billed annually ($2,988 a year); 30-day free trial | 2026-11-05 | source | | Redocly Scale | Adds 10 projects, SSO, multi-product sites, API catalog and scorecards, remote content and project analytics. | From USD 729; Scale, per month billed annually ($8,748 a year) | 2026-11-05 | source | | Redocly Enterprise | Adds unlimited projects, project RBAC, SCIM, MCP analytics and API monitoring. | Quote on request; Contact sales | 2026-11-05 | source | | Redoc CE | Open source renderer that turns an API description into reference docs. | Free, open source; Community edition, free | 2026-11-05 | source | ## Standards | Standard | Status | What the vendor's pages say | Source | | --- | --- | --- | --- | | llms-txt | supports | The AI-ready docs page describes a generated llms.txt in the llmstxt.org shape. | source | | markdown-negotiation | no statement | Neither the AI-ready page nor the seo config reference mentions Accept-based negotiation, though redocly.com returned text/markdown to such a request on 2026-11-05. | source | | markdown-twin | supports | llmstxt options govern the clean Markdown versions of pages listed in llms.txt. | source | | initial-html | supports | The Realm changelog refers to server-side rendering of OpenAPI reference pages. | source | | real-404 | no statement | The SEO docs read do not cover status codes, and redocly.com/docs gave a made-up path a 404 status on 2026-11-05. | source | | vary-accept | no statement | Redocly docs never mention Vary, and both markdown and HTML responses on 2026-11-05 listed Cookie as the only varying header. | source | ## Checks on its own site | Reading | Result | Date | | --- | --- | --- | | Home page request | HTTP 200; H1 in the initial HTML: yes; 1,322 words; 0 JSON-LD blocks | 2026-11-05 | | Request with Accept: text/markdown | HTTP 200, text/markdown, Vary: Cookie, Accept-Encoding | 2026-11-05 | | /llms.txt at the host root | HTTP 200, text/plain, 125 KB, starts with an H1 | 2026-11-05 | | A made-up path | HTTP 404 | 2026-11-05 | | Ora score, cached | 69, grade C | 2026-08-22 | | Cloudflare keyless scan | 47, L1 Basic Web Presence | 2026-11-05 | | Shared crawl row | outside the ranked slice; home page HTTP 200; H1 in the HTML: yes; 1,474 words; JSON-LD types: none; answers markdown: yes; made-up path HTTP 404; llms.txt valid: yes | 2026-11-04 | ## What it does not do - Redocly serves markdown on Accept: text/markdown but did not list Accept in Vary on 2026-11-05, so shared caches are not told the body depends on that header. ## Related pages on this site - [Docs platforms in this section](https://agentreadyhtml.com/vendors/by-type/docs-platform/) - [Redocly: platform profile and rubric scores](https://agentreadyhtml.com/platforms/redocly/) - [The Plain Fetch viewer](https://agentreadyhtml.com/viewer/) ## Sources 1. [Redocly: home page](https://redocly.com/) https://redocly.com/, read 5 November 2026 2. [About Redocly](https://redocly.com/about) https://redocly.com/about, read 5 November 2026 3. [SEO in your project](https://redocly.com/docs/platform/content/realm-seo) https://redocly.com/docs/platform/content/realm-seo, read 5 November 2026 4. [Redocly seo configuration reference](https://redocly.com/docs/platform/config/seo) https://redocly.com/docs/platform/config/seo, read 5 November 2026 5. [WebMCP tools](https://redocly.com/docs/platform/customization/webmcp) https://redocly.com/docs/platform/customization/webmcp, read 5 November 2026 6. [Make docs AI ready](https://redocly.com/docs/platform/ai-ready) https://redocly.com/docs/platform/ai-ready, read 5 November 2026 7. [Realm, Redoc, Revel, and Reef changelog](https://redocly.com/docs/platform/changelog-realm) https://redocly.com/docs/platform/changelog-realm, read 5 November 2026 8. [Redocly pricing](https://redocly.com/pricing) https://redocly.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/).