--- title: "GitBook: agent readability profile: Agent Ready HTML" description: "GitBook scores 11 of 16 on the read-layer rubric: initial HTML, status codes, llms.txt, markdown, JSON-LD, OpenAPI and code. Read 2026-11-04." canonical: https://agentreadyhtml.com/platforms/gitbook/ site: "Agent Ready HTML" last_updated: 2026-11-04 section: "Platforms" --- # GitBook: agent readability profile: Agent Ready HTML > GitBook scores 11 of 16 on the read-layer rubric: initial HTML, status codes, llms.txt, markdown, JSON-LD, OpenAPI and code. Read 2026-11-04. Source: https://agentreadyhtml.com/platforms/gitbook/ Site: Agent Ready HTML Last reviewed: 2026-11-04 # GitBook: what an agent reads In short GitBook does not exclude hidden pages from llms-full.txt or the MCP server. GitBook totals 11 of 16 on the eight numeric keys, from cited documentation read 4 November 2026. It also does not document Accept-header negotiation on the LLM-ready docs page. **rubric.txt** gitbook ```text initial_html_by_default = 2 real_status_codes = 2 llms_txt_generation = 2 llms_txt_linking = 1 markdown_negotiation = 1 jsonld_output = 0 openapi_exposure = 1 fenced_code = 2 total = 11 of 16 ``` Read 2026-11-04. Documentation, not a test build. **GitBook** Docs platform, GitBook Hosted docs platform that publishes .md pages, llms.txt, llms-full.txt and an MCP server for every published docs site. Work left to the developer: Low: nothing to switch on; check hidden pages before publishing, since they appear in llms-full.txt. ## The nine scores | Key | Score | Evidence | Source | | --- | --- | --- | --- | | Content in the initial HTML | 2, on by default | Published pages are served with content in the HTML; the .md twin exists for every page. Not test-built: publishing needs a GitBook account. Score from the documentation page cited, read 2026-11-04. | gitbook.com/docs/publishing-documentation/llm-ready-docs, 2026-11-04 | | Real status codes | 2, on by default | A made-up path on www.gitbook.com returned 404. Observed on the vendor's own site with a plain fetch on 2026-11-04; the vendor's own site may not use default settings. | GET gitbook.com/agent-ready-html-missing-path-check: 404 as observed, 2026-11-04 | | llms.txt generation | 2, on by default | llms.txt and llms-full.txt published automatically. Not test-built: publishing needs a GitBook account. Score from the documentation page cited, read 2026-11-04. | gitbook.com/docs/publishing-documentation/llm-ready-docs, 2026-11-04 | | llms.txt linking | 1, with setup | The docs page links the files; a home page or header link by default is not documented. Not test-built: publishing needs a GitBook account. Score from the documentation page cited, read 2026-11-04. | gitbook.com/docs/publishing-documentation/llm-ready-docs, 2026-11-04 | | Markdown on request | 1, with setup | The .md suffix is documented; Accept-header negotiation is not documented on the page read, although gitbook.com answered it. Not test-built: publishing needs a GitBook account. Score from the documentation page cited, read 2026-11-04. | gitbook.com/docs/publishing-documentation/llm-ready-docs, 2026-11-04 | | JSON-LD output | 0, not offered | Not documented on the AI pages read. Not test-built: publishing needs a GitBook account. Score from the documentation page cited, read 2026-11-04. | gitbook.com/docs/publishing-documentation/llm-ready-docs, 2026-11-04 | | OpenAPI exposure | 1, with setup | OpenAPI blocks are supported in GitBook docs; exposure in llms.txt is not documented on the page read. Not test-built: publishing needs a GitBook account. Score from the documentation page cited, read 2026-11-04. | gitbook.com/docs/publishing-documentation/llm-ready-docs, 2026-11-04 | | Fenced, tagged code | 2, on by default | Markdown export of pages keeps code blocks as markdown. Not test-built: publishing needs a GitBook account. Score from the documentation page cited, read 2026-11-04. | gitbook.com/docs/publishing-documentation/llm-ready-docs, 2026-11-04 | | Work left to the developer | | Low: nothing to switch on; check hidden pages before publishing, since they appear in llms-full.txt. Hidden pages are included in llms-full.txt. Not test-built: publishing needs a GitBook account. Score from the documentation page cited, read 2026-11-04. | gitbook.com/docs/publishing-documentation/llm-ready-docs, 2026-11-04 | ## Test build Not test-built: the scores above come from the documentation pages cited in each row, read 4 November 2026, because the platform needs an account or a paid plan. The reason is in each evidence cell. ## What the documentation says Each statement below carries its source and the date read. Statements a vendor makes about itself are labelled as vendor claims. - Appending .md to any published GitBook page URL returns its markdown. \[primary source\] [source](https://gitbook.com/docs/publishing-documentation/llm-ready-docs), read 4 November 2026. - GitBook publishes /llms.txt listing every published page with a markdown version, and /llms-full.txt with the full content in one file. \[primary source\] [source](https://gitbook.com/docs/publishing-documentation/llm-ready-docs), read 4 November 2026. - Hidden pages are included in llms-full.txt and stay reachable through the MCP server; hiding only removes a page from the table of contents. \[primary source\] [source](https://gitbook.com/docs/publishing-documentation/llm-ready-docs), read 4 November 2026. - Every published docs site exposes an MCP server at /~gitbook/mcp. \[primary source\] [source](https://gitbook.com/docs/publishing-documentation/llm-ready-docs), read 4 November 2026. - GitBook runs an agent-readiness checker for docs built on the afdocs library plus its own checks. \[vendor claim\] [source](https://gitbook.com/agent-score), read 4 November 2026. - GitBook states that 51.8 percent of intentional documentation reads on GitBook are AI agents. \[vendor claim\] [source](https://gitbook.com/agent-score), read 4 November 2026. - On 2026-11-04 a request to www.gitbook.com with Accept: text/markdown returned text/markdown. \[primary source\] [source](https://www.gitbook.com/), read 4 November 2026. ## What it does not do - Does not exclude hidden pages from llms-full.txt or the MCP server. - Does not document Accept-header negotiation on the LLM-ready docs page. ## Compare and replace - [GitBook against Mintlify](https://agentreadyhtml.com/compare/mintlify-vs-gitbook/) - [GitBook against ReadMe](https://agentreadyhtml.com/compare/gitbook-vs-readme/) - [GitBook against Docusaurus](https://agentreadyhtml.com/compare/gitbook-vs-docusaurus/) - [Alternatives to GitBook](https://agentreadyhtml.com/platforms/gitbook/alternatives/) - [GitBook: vendor profile](https://agentreadyhtml.com/vendors/gitbook/) - [GitBook home page](https://www.gitbook.com/) ## Sources 1. [GitBook docs: LLM-ready docs](https://gitbook.com/docs/publishing-documentation/llm-ready-docs) https://gitbook.com/docs/publishing-documentation/llm-ready-docs, read 4 November 2026 2. [GitBook agent-readiness checker](https://gitbook.com/agent-score) https://gitbook.com/agent-score, read 4 November 2026 3. [gitbook.com](https://www.gitbook.com/) https://www.gitbook.com/, read 4 November 2026 4. gitbook.com https://www.gitbook.com/agent-ready-html-missing-path-check (a probe path that answers 404 on purpose), read 4 November 2026 Last reviewed 4 November 2026 Edition Crawl 2026-11-04 Page updated 2026-11-04 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/).