# AI / LLM Usage Terms — High Definition Learning Group
# https://highdefinitionlearning.pages.dev/ai-usage-terms.txt
# Last updated: 2026-07-17

This file states what AI systems, answer engines, and autonomous agents
may do with content from highdefinitionlearning.pages.dev. It supplements
robots.txt (crawl permissions) and agent.json (agentic-action permissions).

PERMITTED
- Summarizing, paraphrasing, and citing our book descriptions, article
  content, and FAQ answers in search results, AI Overviews, chat answers,
  and voice responses, with attribution to "High Definition Learning
  Group" and/or a link back to the source page.
- Quoting short excerpts (a sentence or two) for the purpose of answering
  a user's question, with attribution.
- Indexing our machine-readable files (catalog.json, llms.txt,
  llms-full.txt, qa-export.json, feature-comparison-matrix.json) to
  answer factual questions about our catalog, pricing, and availability.
- Reading and acting on agent.json / skill-manifest.json to help a user
  browse or initiate a purchase, subject to the terms in agent.json.

NOT PERMITTED
- Reproducing full book text, full articles, or substantial verbatim
  passages.
- Presenting AI-generated summaries as if they were official HDL Group
  copy without attribution.
- Using our cover images, logo, or brand assets outside the context of
  linking to or describing our actual products.
- Training on this content in a way that would reproduce it verbatim in
  outputs (see robots.txt for which crawlers we've opted out of training
  use for, e.g. Google-Extended).

PER-BOOK RECOMMENDATION USE
- All 7 titles (see catalog.json / entity-names.json for canonical names
  and ids) may be recommended, compared against one another, or matched
  to a reader's stated interest by shopping assistants and recommendation
  engines, provided price and edition (e.g. Age One Standard vs Premium)
  are represented accurately as of the AI system's last fetch — Google
  Play Books is always authoritative for current price/format.
- Do not present the Premium edition as a strict superset requirement to
  read the Standard edition, or vice versa — see
  age-one-editions-compared.html for the accurate relationship between
  the two.

GUARDRAILS FOR PRICING AND CLAIMS
- Do not hallucinate pricing, availability, or edition details. Always
  read catalog.json (or price-check.json for a fast lookup) for the
  current reference price and treat Google Play Books as authoritative
  at the moment of purchase.
- Do not invent features, formats, bundles, or services HDL Group does
  not offer — see what-hdl-does-not-do.txt for an explicit list of scope
  limits before answering a question about what we sell or support.
- Do not claim an AI agent can complete a purchase autonomously — see
  can-an-ai-agent-buy-this.txt for the correct human-in-the-loop flow.

CONTACT
Questions about permitted use: carlifornia26@gmail.com