--- title: "llms-txt: vendor profile: Agent Ready HTML" description: "llms-txt, markdown tooling: 2 of 6 standards stated as supported, 9 sourced facts, dated plans and what it does not do. Read 2026-11-05." canonical: https://agentreadyhtml.com/vendors/llms-txt-python/ site: "Agent Ready HTML" last_updated: 2026-11-05 section: "Vendors" --- # llms-txt: vendor profile: Agent Ready HTML > llms-txt, markdown tooling: 2 of 6 standards stated as supported, 9 sourced facts, dated plans and what it does not do. Read 2026-11-05. Source: https://agentreadyhtml.com/vendors/llms-txt-python/ Site: Agent Ready HTML Last reviewed: 2026-11-05 # llms-txt (Answer.AI reference tooling): vendor profile In short The llms-txt Python module reads an llms.txt someone else wrote: it parses the sections, can skip the Optional one, and offers XML output because some models prefer it. Proposal v2 adds rel=alternate and rel=describedby links and accepts page.html.md or page.md as copy URLs. The code is Apache-2.0 licensed. ## At a glance **standards.txt** llms-txt-python ```text llms-txt = supports markdown-negotiation = no statement markdown-twin = supports initial-html = no statement real-404 = no statement vary-accept = no statement ``` 2 supports, 0 partial or announced, 4 no statement. **llms-txt** Markdown or llms.txt tool The Python module published with the llms.txt proposal: it parses an llms.txt file into sections and expands the linked files into an XML context, alongside the proposal text that defines the file and the .md page copies. Type [Markdown or llms.txt tool](https://agentreadyhtml.com/vendors/by-type/markdown-tooling/) Operator, as the facts below state it Answer.AI Home page [llmstxt.org](https://llmstxt.org/), answered HTTP 200 on 2026-11-05 Last read 5 November 2026 ## What it does for this layer - The llmstxt.org core module implements parse\_llms\_file, which pulls the sections of an llms.txt into a simple data structure. \[primary source\] [source](https://llmstxt.org/core.html), read 5 November 2026. - The llms-txt module builds a Project with one Section per H2 part of the file and can skip the section named Optional. \[primary source\] [source](https://llmstxt.org/core.html), read 5 November 2026. - The llms-txt module offers an XML output because, its docs say, some LLMs such as Claude prefer XML. \[primary source\] [source](https://llmstxt.org/core.html), read 5 November 2026. - The v2 changes page says the llms\_txt2ctx context-expansion tool is no longer part of the proposal; agents are expected to read llms.txt and follow its links. \[primary source\] [source](https://llmstxt.org/changes.html), read 5 November 2026. - Proposal v2 adds rel="alternate" type="text/markdown" for a page's markdown copy and rel="describedby" for the llms.txt that covers it, as HTML link elements or an HTTP Link header. \[primary source\] [source](https://llmstxt.org/changes.html), read 5 November 2026. - Proposal v2 accepts both page.html.md and page.md as markdown copy URLs and says the most specific llms.txt in a subpath applies. \[primary source\] [source](https://llmstxt.org/changes.html), read 5 November 2026. - The llmstxt.org page lists August 10, 2026 as its modified date. \[primary source, 2026-08-10\] [source](https://llmstxt.org/), read 5 November 2026. - llmstxt.org says all nbdev projects now create .md versions of every page by default. \[primary source\] [source](https://llmstxt.org/), read 5 November 2026. - The AnswerDotAI/llms-txt repository on GitHub is published under the Apache-2.0 licence. \[primary source\] [source](https://github.com/AnswerDotAI/llms-txt), read 5 November 2026. ## Products and plans | Product | What it is | Price | As of | Source | | --- | --- | --- | --- | --- | | llms-txt Python module | Parser and context builder for llms.txt files, documented on llmstxt.org. | Free, open source; Apache-2.0 | 2026-11-05 | source | ## Standards | Standard | Status | What the vendor's pages say | Source | | --- | --- | --- | --- | | llms-txt | supports | Reference parser and the proposal text itself. | source | | markdown-negotiation | no statement | The proposal pages read define link relations, not Accept-header negotiation. | none | | markdown-twin | supports | v2 defines page.html.md and page.md copies. | source | | initial-html | no statement | Out of scope for the module. | none | | real-404 | no statement | Out of scope for the module. | none | | vary-accept | no statement | Out of scope for the module. | none | ## Checks on its own site | Reading | Result | Date | | --- | --- | --- | | Home page request | HTTP 200; H1 in the initial HTML: yes; 1,801 words; 0 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, 637 B, starts with an H1 | 2026-11-05 | | A made-up path | HTTP 404 | 2026-11-05 | | Ora score, cached | 44, grade D | 2026-10-11 | | Cloudflare keyless scan | 7, L0 Not Ready | 2026-11-05 | | Shared crawl row | outside the ranked slice; home page HTTP 200; H1 in the HTML: yes; 1,896 words; JSON-LD types: none; answers markdown: no; made-up path HTTP 404; llms.txt valid: yes | 2026-11-04 | ## What it does not do - The llms-txt module does not generate an llms.txt from a website; it reads and expands a file someone has already written. ## Related pages on this site - [Markdown and llms.txt tooling in this section](https://agentreadyhtml.com/vendors/by-type/markdown-tooling/) - [The Plain Fetch viewer](https://agentreadyhtml.com/viewer/) ## Sources 1. [The /llms.txt file, v2: llms-txt](https://llmstxt.org/) https://llmstxt.org/, read 5 November 2026 2. [Python source: llms-txt](https://llmstxt.org/core.html) https://llmstxt.org/core.html, read 5 November 2026 3. [Changes: llms-txt](https://llmstxt.org/changes.html) https://llmstxt.org/changes.html, read 5 November 2026 4. [GitHub - AnswerDotAI/llms-txt: The /llms.txt file, helping language models use your website ยท GitHub](https://github.com/AnswerDotAI/llms-txt) https://github.com/AnswerDotAI/llms-txt, 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/).