# Audit finds most major websites aren't AI agent-ready

Published: 2026-09-01T19:19:48.110Z · Source: Search Engine Journal (https://www.searchenginejournal.com/the-technical-signals-ai-search-uses-that-most-seos-still-arent-optimizing/586381/)
Source date: 2026-09-01

A technical audit of 50 major websites across retail, SaaS, travel, publishing and finance — run by SALT.agency and published by Search Engine Journal — scored each against 12 machine-readability signals, from robots.txt directives to JSON-LD schema. Airbnb scored highest at 79.2%; the average site implemented just over half the signals (56.6%), and only 5 of 50 had adopted Cloudflare's Content Signals Policy. The steepest shortfall was at the "agent transaction" layer, where AI agents complete tasks via OAuth discovery protocols: 46 of 48 sites scored zero, and the audit found nearly two-thirds of sites had made no deliberate decision about which AI bots can access their content.

Why it matters: The steepest gap sits at agent-transaction protocols like OAuth, not citation-facing basics like schema markup — suggesting the next AEO frontier is letting AI agents act on a site, not just read it.

## What this answers

**How many major websites are ready for AI agents to complete tasks?**

A SALT.agency audit of 50 major websites, published by Search Engine Journal, found sites averaged just 2.1% on agent-transaction protocols like OAuth discovery, and 46 of 48 sites tested scored zero.

**How many major websites publish an llms.txt file?**

Only 11 of the 50 major websites audited by SALT.agency for Search Engine Journal had published an llms.txt file.


Canonical: https://anythingengineoptimization.com/item/2026-09-01-audit-finds-most-major-websites-aren-t-ai-agent-ready/
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