Agent-friendly documentation: a Markdown index for AI agents is at /llms.txt. Every page is also available as clean Markdown by appending .md to its URL (e.g. /pricing.md), or by requesting it with an Accept: text/markdown header.

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AFDocs Checker

Score any docs site against the Agent-Friendly Documentation spec — 23 checks, one grade.

How it works

Enter any documentation URL and the checker runs the open afdocs engine against it: 23 checks across 7 categories — content discoverability, markdown availability, page size, content structure, URL stability, observability, and authentication.

You get an overall 0-100 score with an A+ to F grade, a score per category, and the full check list with a concrete remediation for everything that failed.

The whole scorecard downloads as PDF or CSV the moment it finishes — no email, no account, no gate. Any URL works: a page that isn't documentation simply earns the score it deserves.

Frequently asked questions

What does the AFDocs score measure?

How well AI agents can discover, navigate, and consume your documentation: whether llms.txt exists and validates, whether pages are available as markdown, whether page sizes fit agent truncation limits, whether URLs are stable, and whether content stays healthy over time.

Do I need the URL to be a docs site?

No. The check runs against any http(s) URL and returns a real score. A marketing homepage will usually score low — that is the honest answer, not an error.

Is the result really free to download?

Yes. The PDF and CSV scorecards generate in your browser from the result you are already looking at. There is no email gate anywhere on these tools.

How long does a check take?

Usually 10-40 seconds. The engine makes a series of polite, rate-limited requests to the target site; very slow targets time out with a clear message rather than hanging.

Agent-ready docs get discovered. Agent-ready sites get linked.

BuildSEO AI builds the backlinks that put your site in front of both crawlers and AI agents — discovered, qualified, submitted, and verified with evidence.

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