For agents: JSON · MCP

402registry

x402Grade CLast checked 4 hours ago

GET https://402registry.com/buy/four

Agent-visibility check: does an AI crawler (GPTBot, ClaudeBot, PerplexityBot, OAI-SearchBot) actually see your site? BEST-RATE pack: 4 checks for $5 ($1.25/check). Same service, smallest entry $2 at https://402registry.com/buy/one. Ladder: 1/$2, 2/$3, 4/$5. All packs: https://402registry.com/.well-known/402registry.json. A passing check earns a dated badge and a registry listing. No account, no card, no human.

Price$5per page fetched · paid in USD on Base

Uptime100%

4/4 probes · 508.5 ms

Score58Grade C

Paid usage, 30 days1payers · 1 calls

Warnings

Price mismatch The live price differs from the catalogue listing.

How to buy

This endpoint takes pay-per-call payments over x402. Call it once without paying to see its live price; any x402 client then pays and retries automatically.

curl -i -X GET "https://402registry.com/buy/four"
# HTTP/1.1 402 Payment Required: price, asset and payTo are in the response

Recent checks

Checked (UTC)	Result	Status	Time	Live price
2026-10-11 09:30	Valid 402	402	464 ms	$0.1
2026-10-11 05:00	Valid 402	402	499 ms	$0.1
2026-10-11 00:30	Valid 402	402	556 ms	$0.1
2026-10-10 20:15	Valid 402	402	518 ms	$0.1

Receipts

No test purchases yet. Graded test purchases are next on our list; until then every number here comes from unpaid checks.

What a check proves