The CRO9 API
Sell the answer nobody else can give
Every SEO API sells you Google’s view of a page. This one tells you whether GPTBot, ClaudeBot and PerplexityBot can read it — and what is refusing them when they cannot. Put it in your onboarding, your audit deck, or your own product.
Free
$0
100 scans / month
10 a day, 1 a minute. No card.
Pay as you go
$0.02
per scan
Metered. No minimum, no commitment.
Growth
$99
/mo · 10,000 scans
Works out at $0.0099 a scan.
Scale
$499
/mo · 100,000 scans
Works out at $0.005 a scan.
Billed on successful calls only. A 5xx from us is never charged, and a retry with the same request id cannot bill twice.
Endpoints
POST/v1/scan
The 33-point CRO and AI-readiness scan. Score, category breakdown, itemised findings with fixes.
POST/v1/ai-visibility
Six live crawler probes against a browser control. Per-crawler verdict, and the CAUSE when one is refused.
GET/v1/usage
Calls used this period, your limit, and when it resets. Never a surprise invoice.
A cold scan — nothing cached — completes in 0.28 to 0.47 seconds, measured against live production. Eight outbound requests run in parallel: six crawler identities, a browser control, and robots.txt.
Before you write a line of code
Run the scan the API returns
The public scan and the API run the same engine. Try it on a client domain, read the response, and decide whether it belongs in your product.