AISO is a free AI-search visibility scanner that grades any URL from 0 to 100 across 10 dimensions covering crawler access, content structure, citation density, schema quality, freshness, entity clarity, and live AI-engine visibility.

How does AI search visibility work?

AI search engines (ChatGPT, Claude, Perplexity, Google AI Overviews) read pages through their own crawlers, then synthesize answers that cite the sources they trust. AISO measures whether your pages are crawlable, parseable, and citation-friendly.

llms.txt is an emerging discovery standard, spec'd at llmstxt.org, that exposes a site's primary surfaces to AI agents in plain markdown. AISO validates llms.txt as part of the AI Discovery dimension.

How is AISO different from traditional SEO tools?

Traditional SEO tools optimize for keyword rank in Google's blue links. AISO optimizes for citation in generative answers across multiple AI engines.

Is the AISO scanner free?

Yes, the deterministic scanner is permanently free with no credit card. Paid tiers (Page $1, Crawl $5, Full $10-15, Deep $50) unlock multi-page crawls and live AI-engine probes.

Which AI bots does AISO check for?

AISO checks robots.txt for OAI-SearchBot, GPTBot, ChatGPT-User, ClaudeBot, Claude-Web, anthropic-ai, PerplexityBot, Googlebot, Google-Extended, Bingbot, Applebot, Applebot-Extended, CCBot, Bytespider, and others.

Can I run AISO from Claude Code or another MCP client?

Yes. AISO ships an MCP server at /mcp exposing seven tools. See /docs/mcp for setup.

Can autonomous agents pay for scans?

Yes. AISO accepts x402 payments (USDC on Base) at POST /api/scan for tiers as low as $0.10. The endpoint replies HTTP 402 with payment instructions when payment is missing.

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