Google and Vercel Enter Agentic Web Readiness Space a Developer Explored Twice

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A developer built two tools — Hermes Clew and Agentis Lux — to assess how well websites can be read by AI retrieval agents, submitting both to hackathons without placing. The core idea, surfaced at a March hackathon by a you.com representative, is that websites now serve two audiences: human visitors and AI crawlers that read raw HTML markup. On May 7, 2026, Google added an Agentic Browsing category to Lighthouse 13.3, checking for signals like llms.txt files and accessibility tree quality, though it deliberately avoids a single composite score given the still-emerging standards. On August 21, Vercel and Ora launched is-agentic.com, bringing the total to four tools addressing the same question of whether an AI agent can effectively use a given site. The developer notes a key philosophical difference in his second tool, Agentis Lux: it reports findings about what an agent cannot do but stops short of prescribing fixes, arguing that automated code recommendations made without knowledge of a codebase's constraints can be reckless.

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