--- title: "TYPO3: vendor profile: Agent Ready HTML" description: "TYPO3, a CMS: 0 of 6 standards stated as supported, 10 sourced facts, dated plans and what it does not do. Read 2026-11-05." canonical: https://agentreadyhtml.com/vendors/typo3/ site: "Agent Ready HTML" last_updated: 2026-11-05 section: "Vendors" --- # TYPO3: vendor profile: Agent Ready HTML > TYPO3, a CMS: 0 of 6 standards stated as supported, 10 sourced facts, dated plans and what it does not do. Read 2026-11-05. Source: https://agentreadyhtml.com/vendors/typo3/ Site: Agent Ready HTML Last reviewed: 2026-11-05 # TYPO3: vendor profile In short TYPO3 core writes no llms.txt or markdown copies. The LLMS TXT Generator extension adds an index at /llms.txt and /.well-known/llms.txt and a .md page for each listed URL, and it needs TYPO3 13.4 LTS or 14.3 LTS. Hidden and no-index pages stay out. typo3.org itself served a 2,186-byte llms.txt on 2026-11-05. ## At a glance **standards.txt** typo3 ```text llms-txt = partial markdown-negotiation = no statement markdown-twin = partial initial-html = no statement real-404 = partial vary-accept = no statement ``` 0 supports, 3 partial or announced, 3 no statement. **TYPO3** Content management system Open-source PHP CMS that renders pages on the server, with site-level error handlers per status code; llms.txt and .md copies of pages come from extensions such as the LLMS TXT Generator documented on docs.typo3.org. Type [Content management system](https://agentreadyhtml.com/vendors/by-type/cms/) Home page [typo3.org](https://typo3.org/), answered HTTP 200 on 2026-11-05 Last read 5 November 2026 ## What it does for this layer - The LLMS TXT Generator extension for TYPO3 produces an llms.txt index of the site and a markdown version of every listed page at its URL plus .md, without navigation, header or footer. \[primary source\] [source](https://docs.typo3.org/permalink/web-vision/ai-llms-txt:introduction@main), read 5 November 2026. - The LLMS TXT Generator serves the index at both /llms.txt and /.well-known/llms.txt. \[primary source\] [source](https://docs.typo3.org/permalink/web-vision/ai-llms-txt:introduction@main), read 5 November 2026. - The extension builds the markdown pages through TYPO3's regular rendering, so every content element and column position is included. \[primary source\] [source](https://docs.typo3.org/permalink/web-vision/ai-llms-txt:introduction@main), read 5 November 2026. - Hidden, access-restricted, hide-in-menu and no-index pages are left out of the TYPO3 extension's llms.txt. \[primary source\] [source](https://docs.typo3.org/permalink/web-vision/ai-llms-txt:introduction@main), read 5 November 2026. - The LLMS TXT Generator requires TYPO3 13.4 LTS or 14.3 LTS, PHP 8.2 to 8.5 and the TYPO3 system extension seo. \[primary source\] [source](https://docs.typo3.org/permalink/web-vision/ai-llms-txt:introduction@main), read 5 November 2026. - The TYPO3 extension can cache the generated llms.txt and export pages as markdown files from the command line. \[primary source\] [source](https://docs.typo3.org/permalink/web-vision/ai-llms-txt:introduction@main), read 5 November 2026. - The extension's documentation states that llms.txt is not an access-control mechanism and points to robots.txt and server configuration for crawl permissions. \[primary source\] [source](https://docs.typo3.org/permalink/web-vision/ai-llms-txt:introduction@main), read 5 November 2026. - TYPO3's ErrorController looks up the error handler a site configures for a status code and falls back to TYPO3's own error page when the site configures none. \[primary source\] [source](https://docs.typo3.org/m/typo3/reference-coreapi/main/en-us/ApiOverview/SiteHandling/ErrorHandling/Index.html), read 5 November 2026. - TYPO3 14.2 added a generic error action to the ErrorController for HTTP status codes that the fixed error methods do not cover. \[primary source\] [source](https://docs.typo3.org/m/typo3/reference-coreapi/main/en-us/ApiOverview/SiteHandling/ErrorHandling/Index.html), read 5 November 2026. - TYPO3's system extension seo gives editors meta tag fields and renders the meta tags and an XML sitemap in the frontend. \[primary source\] [source](https://docs.typo3.org/c/typo3/cms-seo/main/en-us/Introduction/Index.html), read 5 November 2026. ## Products and plans | Product | What it is | Price | As of | Source | | --- | --- | --- | --- | --- | | TYPO3 CMS | Server-rendered PHP CMS with site configuration for error handling and a system extension for SEO. | No price on the pages read | | | | LLMS TXT Generator (web-vision/ai-llms-txt) | Extension that writes llms.txt and serves .md copies of pages. | No price on the pages read | | | ## Standards | Standard | Status | What the vendor's pages say | Source | | --- | --- | --- | --- | | llms-txt | partial | An extension writes llms.txt and /.well-known/llms.txt; core does not. | source | | markdown-negotiation | no statement | The extension page describes .md URLs, not Accept-header negotiation. | none | | markdown-twin | partial | With the extension, every listed page has a .md copy. | source | | initial-html | no statement | Server rendering is TYPO3's architecture; the pages read do not state it in these words. | none | | real-404 | partial | Sites configure an error handler per status code; without one TYPO3 shows its own error page. | source | | vary-accept | no statement | Not covered in the pages read. | none | ## Checks on its own site | Reading | Result | Date | | --- | --- | --- | | Home page request | HTTP 200; H1 in the initial HTML: yes; 504 words; 1 JSON-LD block | 2026-11-05 | | Request with Accept: text/markdown | HTTP 200, text/markdown, Vary: Accept | 2026-11-05 | | /llms.txt at the host root | HTTP 200, text/markdown, 2.1 KB, starts with an H1 | 2026-11-05 | | A made-up path | HTTP 404 | 2026-11-05 | | Ora score, cached | 59, grade C | 2026-10-30 | | Cloudflare keyless scan | 20, L1 Basic Web Presence | 2026-11-05 | ## What it does not do - TYPO3 core ships neither an llms.txt nor markdown copies of pages; an extension supplies both. ## Related pages on this site - [Content management systems in this section](https://agentreadyhtml.com/vendors/by-type/cms/) - [The Plain Fetch viewer](https://agentreadyhtml.com/viewer/) ## Sources 1. [TYPO3: home page](https://typo3.org/) https://typo3.org/, read 5 November 2026 2. [Introduction: LLMS TXT Generator main documentation](https://docs.typo3.org/permalink/web-vision/ai-llms-txt:introduction@main) https://docs.typo3.org/permalink/web-vision/ai-llms-txt:introduction@main, read 5 November 2026 3. [Error handling: TYPO3 Explained main documentation](https://docs.typo3.org/m/typo3/reference-coreapi/main/en-us/ApiOverview/SiteHandling/ErrorHandling/Index.html) https://docs.typo3.org/m/typo3/reference-coreapi/main/en-us/ApiOverview/SiteHandling/ErrorHandling/Index.html, read 5 November 2026 4. [Introduction: SEO main documentation](https://docs.typo3.org/c/typo3/cms-seo/main/en-us/Introduction/Index.html) https://docs.typo3.org/c/typo3/cms-seo/main/en-us/Introduction/Index.html, 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/).