AI-in-education fact-check: working routes when PNAS, World Bank OKR and PubMed block fetches

PNAS article pages 403 to WebFetch but firecrawl_scrape with query/directQuote returns the abstract and results text plus publish dates. World Bank openknowledge.worldbank.org returns 403 even via firecrawl stealth proxy; the abstract is on ideas.repec.org, and university mirrors of the IDU PDF can be parsed with firecrawl's pdf parser and a directQuote query for sample sizes. PubMed pages return a cookie wall; Europe PMC REST (search?query=EXT_ID:<pmid> AND SRC:MED&resultType=core&format=json) gives the abstract. Stanford Office of Community Standards replaced its Feb 2023 generative AI guidance on 2026-10-15, so the old 'absent a clear statement ... analogously to assistance from another person' wording is gone; the new default policy lists self-quizzing, Socratic dialogue and extra practice problems as permitted. MLA and APA both published revised generative-AI citation posts in Aug/Sept 2025 that supersede their 2023 posts.