LLMS-Explorer
The llms.txt standard, in practice
llms.txt tells AI agents what a site contains; LLMS-Explorer grades the files already published and maps every concept behind them in one browsable tree.
The concept tree is the map; llms files are the territory; the site keeps the two in agreement.
Get the skills and CLIBrowse the concept tree
499 concepts across 86 roots, mapped 2026-08-30· 92 of 144 scored llms files earn an A, linted 2026-09-08· 11 retrieval questions, recorded 2026-08-31
- Publishing your first llms.txtRead the rubric a file is graded against.
- Already publish oneSee how the scored files rank under the same lint.
- Here to search the corpusWatch keyword, vector and hybrid retrieval, recorded.
Explore the corpus
Tree
Every researched concept, with a 3D map of the same graph.
llms.txt and LLM-readable documentation — 5 of 5 children the same branch as mermaid
mindmap root((llms.txt and LLM-readable documentation)) llms.txt specification v2 llms-full.txt page grammars llms.txt generation tooling llms.txt ecosystem evidence llms.txt recreation and family aggregationDirectory
The mirrored
llms-full.txtfiles we can score, graded byllms_lint.Grade A, largest first — sites doing it well Demo
Keyword, vector and hybrid retrieval over one docset, recorded.
Hybrid, top hit “Install Claude Code on Windows with PowerShell”
`Claude Code on Windows requires either Git for Windows (for bash) or PowerShell`: [Install a shell](#claude-code-on-windows-requires-either-git-for-windows-for-bash-or-powershell)
Read the reference
Reference
The
/ldorubric: attributes, passes, and spokes.Opens with Formatting: the grammars side by side — The index, the three full-file grammars, the facts line, the small file, the vocabulary line, the split root and the manifest — on one page.
Examples
The decision table and copy-only recipes.
Opens with Which layer answers which question — The decision table for the cookbook: match the shape of your question to the cheapest llms layer that answers it, then open the recipe.
Blog
Launch posts with figures from the corpus.
Most recent Hub-and-spoke indexes — Why the 10 KB index rule is a split rule and not a truncation rule: the root keeps one line per section with page and token counts, every section becomes a spec-v2 index of its own, nothing is dropped, and /ldo refuses to improve the prose.
llms.txt
This site's own llms family — the index an agent reads, rendered for a person.
Five files, one family - llms.txt — the index
- llms-full.txt — every page, in order
- llms-small.txt — the reference layers, budgeted
- llms-facts.txt — one claim per line
- llms-vocabulary.txt — the terms
Apply it to your own files
- Skills — the skills the tree above is built with, one page each; also in the nav menu.
- Downloads — the skills via
npx, thellmsxlibrary and CLI, the npm package, and the terminal browser. - Playground — three skills you can run in the browser: notes → llms.txt, the concept library, and the llms.txt optimizer (needs an API key with
runscope). - Contribute — add a subject to the directory. Sign in to submit, view your proposals, and track their moderation status.
- Sign in — your account, its API keys and its usage; everything above is readable without one.