--- title: "docs.langchain.com llms.txt, graded: Agent Ready HTML" description: "The docs.langchain.com llms.txt parsed and graded A against the llmstxt.org structure: 2 sections, 17 links, 3.1 KB. Read 2026-11-04." canonical: https://agentreadyhtml.com/llms-txt-index/docs-langchain-com/ site: "Agent Ready HTML" last_updated: 2026-11-05 section: "llms.txt Index" --- # docs.langchain.com llms.txt, graded: Agent Ready HTML > The docs.langchain.com llms.txt parsed and graded A against the llmstxt.org structure: 2 sections, 17 links, 3.1 KB. Read 2026-11-04. Source: https://agentreadyhtml.com/llms-txt-index/docs-langchain-com/ Site: Agent Ready HTML Last reviewed: 2026-11-05 # docs.langchain.com llms.txt In short docs.langchain.com serves a 3.1 KB llms.txt with 2 H2 sections and 17 links, graded A on the llmstxt.org structure (6 of 6 checks). It passes every check. The home page links the file. Read 4 November 2026. The file is one of 2,529 plain-text llms.txt files in this edition of the index. **llms.txt** 3.1 KB, 30 lines ```markdown # Docs by LangChain > Documentation for LangSmith, Fleet, and our open source packages. - [AGENT DEVELOPMENT LIFECYCLE (1518 pages)](https://docs.langchain.com/_llms/agent-development-lifecycle.txt): Documentation for AGENT DEVELOPMENT LIFECYCLE. - [PRODUCTS AND SETUP (223 pages)](https://docs.langchain.com/_llms/products-and-setup.txt): Documentation for PRODUCTS AND SETUP. ## OpenAPI Specs - [agent-server-openapi](https://agentreadyhtml.com/langsmith/agent-server-openapi.json) - [openapi](https://api.host.langchain.com/openapi.json) - [langsmith-platform-openapi](https://agentreadyhtml.com/langsmith/langsmith-platform-openapi.json) > The links below point to documentation indexes. Follow each `/_llms/` index recursively until you reach documentation pages. ## Indexes - [AGENT DEVELOPMENT LIFECYCLE (1518 pages)](https://docs.langchain.com/_llms/agent-development-lifecycle.txt): Documentation for AGENT DEVELOPMENT LIFECYCLE. - [AGENT DEVELOPMENT LIFECYCLE / Build (482 pages)](https://docs.langchain.com/_llms/agent-development-lifecycle/build.txt): Build agents with open source - [AGENT DEVELOPMENT LIFECYCLE / Build / Python (244 pages)](https://docs.langchain.com/_llms/agent-development-lifecycle/build/python.txt): Documentation for AGENT DEVELOPMENT LIFECYCLE / Build / Python. - [AGENT DEVELOPMENT LIFECYCLE / Build / TypeScript (251 pages)](https://docs.langchain.com/_llms/agent-development-lifecycle/build/type-script.txt): Documentation for AGENT DEVELOPMENT LIFECYCLE / Build / TypeScript. - [AGENT DEVELOPMENT LIFECYCLE / Deploy (253 pages)](https://docs.langchain.com/_llms/agent-development-lifecycle/deploy.txt): Ship agents to production - [AGENT DEVELOPMENT LIFECYCLE / Deploy / Get started (145 pages)](https://docs.langchain.com/_llms/agent-development-lifecycle/deploy/get-started.txt): Documentation for AGENT DEVELOPMENT LIFECYCLE / Deploy / Get started. - [AGENT DEVELOPMENT LIFECYCLE / Monitor (705 pages)](https://docs.langchain.com/_llms/agent-development-lifecycle/monitor.txt): Trace, debug, and observe agents - [AGENT DEVELOPMENT LIFECYCLE / Monitor / Reference (604 pages)](https://docs.langchain.com/_llms/agent-development-lifecycle/monitor/reference.txt): Documentation for AGENT DEVELOPMENT LIFECYCLE / Monitor / Reference. - [AGENT DEVELOPMENT LIFECYCLE / Monitor / Reference / LangSmith REST API (596 pages)](https://docs.langchain.com/_llms/agent-development-lifecycle/monitor/reference/lang-smith-rest-api.txt): Documentation for AGENT DEVELOPMENT LIFECYCLE / Monitor / Reference / LangSmith REST API. - [AGENT DEVELOPMENT LIFECYCLE / Monitor / Reference / LangSmith REST API / Administration (154 pages)](https://docs.langchain.com/_llms/agent-development-lifecycle/monitor/reference/lang-smith-rest-api/administration.txt): Documentation for AGENT DEVELOPMENT LIFECYCLE / Monitor / Reference / LangSmith REST API / Administration. - [PRODUCTS AND SETUP (223 pages)](https://docs.langchain.com/_llms/products-and-setup.txt): Documentation for PRODUCTS AND SETUP. - [PRODUCTS AND SETUP / LangSmith setup (152 pages)](https://docs.langchain.com/_llms/products-and-setup/lang-smith-setup.txt): Hosting and administration ``` First 29 of 30 lines. **Parse** graded A, 6 of 6 file: https://docs.langchain.com/llms.txt Docs by LangChain Documentation for LangSmith, Fleet, and our open source packages. 2 sections, 17 links, no Optional section. Ora's cached score: 68, grade C, scanned 21 August 2026. ## The parse docs.langchain.com lists 17 links: 17 point at langchain.com or a relative path, 0 point elsewhere. The hosts it links most: docs.langchain.com (14), api.host.langchain.com (1). | H2 section | Links | | --- | --- | | OpenAPI Specs | 3 | | Indexes | 12 | ## Grade against the llmstxt.org structure The file passes all six checks. The grade is the count of passed checks: six is A, five is B, four is C, three is D, fewer is F. It measures structure only. Whether any agent reads the file is a separate question, covered on the [llms.txt reference](https://agentreadyhtml.com/llms-txt/). | Check | Result | Detail | | --- | --- | --- | | Starts with an H1 naming the site or project | Pass | H1: Docs by LangChain | | Has a blockquote summary under the H1 | Pass | Blockquote summary found. | | Has at least one H2 section that lists links | Pass | 2 H2 sections, 2 with links. | | At least 80 percent of links point at the same site | Pass | 17 of 17 links stay on langchain.com (100 percent). | | Under 100 KB | Pass | 3129 bytes as served. | | Plain markdown, no HTML | Pass | No HTML document markers in the body. | ## Ora's cached score Ora's cached report for docs.langchain.com gives it **68 of 100, grade C**, scanned on 21 August 2026. Its Access layer, which holds the read-layer checks below, scored 33 of 68 check points. Read from GET ora.ai/api/score/docs.langchain.com on 5 November 2026. The score is Ora's, not this site's, and the structure grade above is a different measure: it grades the llms.txt file against the llmstxt.org proposal, while Ora's score covers the whole site. [Ora's report for docs.langchain.com](https://ora.ai/score/docs.langchain.com?utm_source=agentreadyhtml.com&utm_medium=referral&utm_campaign=index-entry) has every layer. | Ora check (Access layer) | Result | Points | | --- | --- | --- | | Sitemap exists | Pass | 2 of 2 | | Content without JavaScript | Pass | 2 of 3 | | Not blocked by bot detection | Pass | 2 of 2 | | Markdown URL fallback | Partial | 1 of 2 | | llms.txt exists | Pass | 1 of 1 | | llms.txt formatting | Pass | 2 of 2 | | JSON-LD structured data | Partial | 2 of 4 | | Metadata completeness | Pass | 2 of 2 | | llms.txt links resolve | Pass | 2 of 2 | | Markdown alternate link | Pass | 1 of 1 | | Redirect hygiene | Pass | 1 of 1 | | Page token budget | Pass | 1 of 1 | | Code fence validity | Pass | 1 of 1 | | Content behind auth | Pass | 2 of 2 | | OpenAPI spec published | Fail | 0 of 7 | | Markdown agent docs | Pass | 1 of 1 | | Markdown negotiation with Vary | Pass | 1 of 1 | | Markdown for agent user agents | Fail | 0 of 1 | | Agent crawler reachability | Pass | 2 of 2 | ## Linking and the companion file The home page of docs.langchain.com links the file in its HTML. Ora's lab found (2026-10-19) that 86 percent of llms.txt fetches by agents arrived through a link, so an unlinked file is mostly a file nobody opens. ## How it compares At 3.1 KB the file is larger than 17 percent of the 2,529 plain-text llms.txt files in this edition, and its 17 links put it ahead of 29 percent of them on link count. The home page declares no generator. Size bucket: 2 to 10 KB. Curated example. Category: Framework. Why it is in the index: Short index for a large docs set. Owner as listed: LangChain. Live file: [https://docs.langchain.com/llms.txt](https://docs.langchain.com/llms.txt). Read 4 November 2026. If the file has since changed or gone, the live URL is the authority; this page records what the crawl read on that date. - [All entries](https://agentreadyhtml.com/llms-txt-index/) - [Edition 2026-11-04](https://agentreadyhtml.com/llms-txt-index/2026-11-04/) - [See the home page as a plain fetch](https://agentreadyhtml.com/viewer/?url=https%3A%2F%2Fdocs.langchain.com%2F) ## Sources 1. [docs.langchain.com llms.txt](https://docs.langchain.com/llms.txt) https://docs.langchain.com/llms.txt, read 4 November 2026 2. [llms.txt proposal (llmstxt.org)](https://llmstxt.org/) https://llmstxt.org/, read 4 November 2026 3. [Tranco list 746WX (crawl universe)](https://tranco-list.eu/list/746WX) https://tranco-list.eu/list/746WX, read 4 November 2026 4. [Ora: AgentReady launch post (the 86 percent finding)](https://ora.ai/blog/agentready-launch?utm_source=agentreadyhtml.com&utm_medium=referral&utm_campaign=entry) https://ora.ai/blog/agentready-launch, read 4 November 2026 5. [Ora llms.txt (GET /api/score/{domain} looks up a cached score)](https://ora.ai/llms.txt?utm_source=agentreadyhtml.com&utm_medium=referral&utm_campaign=entry) https://ora.ai/llms.txt, read 5 November 2026 Last reviewed 5 November 2026 Edition Crawl 2026-11-04 Ora reads 2026-11-05 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/).