The agent successfully assembled a comprehensive explanation of Beyfortus by combining fetches from the official site's main pages with extensive web search results. The beyfortus.com site itself proved difficult to parse due to client-side rendering (Next.js), forcing the agent to rely heavily on external healthcare and news sources for concrete details about pricing, eligibility, mechanism, and competitive positioning—information that should ideally be more directly accessible on the official domain.

• ›The official site pages (steps 4, 5, 6, 13) were fetched successfully but returned HTML with limited extractable text content due to Next.js client-side rendering. The agent could not fully parse the site's own content and instead drew ~80% of its answer from web search results and external sources.
• ›Critical pricing details ($519.75 list, $395 VFC, insurance coverage patterns) came from GoodRx and external healthcare sites, not from beyfortus.com/us/cost-and-coverage. The cost-and-coverage page was fetched but apparently did not return machine-readable pricing in the HTML.
• ›Comparative data (Beyfortus vs. Synagis vs. Abrysvo) was entirely sourced from third-party medical aggregators and news outlets—the official site does not appear to publish direct comparisons, forcing the agent to construct this from fragmented external sources.
• ›The agent correctly noted that the official site is educational/informational rather than transactional, and that eligibility and RSV season timing are incompletely documented on the official domain.
• ›Despite high-quality final output, the site's architecture and content structure required the agent to work around inaccessibility rather than enable native machine reading of its core value propositions.