Discover / 402registry.com

402registry: AI Crawler Audit

■ Challenge detected

AI crawler visibility audit: is your website visible to AI crawlers (GPTBot, ClaudeBot, PerplexityBot, OAI-SearchBot) so ChatGPT, Claude and Perplexity can read and cite it? Fetched like an AI crawler, without JavaScript: robots.txt, llms.txt, sitemap, soft 404, JSON-LD, and which crawlers are blocked at the edge. $0.10 per check, one payment per check: every rule, a model verdict, a fix with evidence for every finding. Pass: a dated badge and a registry listing. No account, no human.

x402
Base
USDC

Listed price: $0.1
Challenge detected: 10 of the last 10 checks
Median response: 276 ms
Last checked: 17 Oct, 07:50 UTC
In our index since: 26 Sept 2026

Endpoint

curl -i https://402registry.com/buy/one
# 402 Payment Required: pay with an x402 client (USDC on Base),
# then send the same request again with the payment attached.

4 listed endpoints · on x402 Bazaar

Checks and payment terms on this page refer to the endpoint above. Other listed endpoints have not been checked individually.

Base URLhttps://402registry.com/buy

GET/catalog$0.05Catalog snapshot: every site in the 402registry catalog of sites verified visible to AI crawlers, as one JSON file rendered at purchase, every record dated. Basic fields are free at https://402registry.com/registry.json; this adds per site the findings by name and severity, the stack, the title and what the crawler saw without JavaScript (AI bot status codes, robots, sitemap, llms.txt). No input: one GET, one payment, $0.05.
GET/four$5Agent-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.
GET/quick$0.1Quick review: does an AI crawler (GPTBot, ClaudeBot, PerplexityBot, OAI-SearchBot) actually see your site? Every rule, no model: $0.1 for one check. Returns the score, findings by severity and the five that matter most (empty JS shell, soft 404, www/apex, robots vs AI bots, sitemap) with evidence. Fixes, a model verdict and a listing: the full check at https://402registry.com/buy/one. A passing review queues the site for the free catalog check. No account, no card, no human.
GET/one$0.1AI crawler visibility audit: is your website visible to AI crawlers (GPTBot, ClaudeBot, PerplexityBot, OAI-SearchBot) so ChatGPT, Claude and Perplexity can read and cite it? Fetched like an AI crawler, without JavaScript: robots.txt, llms.txt, sitemap, soft 404, JSON-LD, and which crawlers are blocked at the edge. $0.10 per check, one payment per check: every rule, a model verdict, a fix with evidence for every finding. Pass: a dated badge and a registry listing. No account, no human.

A dash means the listing gives no price or method. Copy buttons copy the full URL.

Showing 4 of 4 listed endpoints.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/402registry.com

Recent checks

29 Sept 2026One bar per check, showing up to 20 recent checks. Coloured bars show relative response time, with a minimum visible height; full-height grey bars mean no challenge was detected. “Challenge detected” means HTTP 402 or another detected payment-challenge signal.17 Oct 2026

All 10 checks

When (UTC)	Result	HTTP	Response
17 Oct, 07:50 UTC	Challenge detected	402	245ms
15 Oct, 23:42 UTC	Challenge detected	402	305ms
14 Oct, 19:26 UTC	Challenge detected	402	324ms
13 Oct, 00:46 UTC	Challenge detected	402	245ms
11 Oct, 06:02 UTC	Challenge detected	402	207ms
9 Oct, 21:31 UTC	Challenge detected	402	271ms
8 Oct, 18:39 UTC	Challenge detected	402	498ms
7 Oct, 15:42 UTC	Challenge detected	402	281ms
6 Oct, 15:31 UTC	Challenge detected	402	262ms
29 Sept, 05:02 UTC	Challenge detected	402	347ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 17 Oct, 07:50 UTC, it returned HTTP 402 or another detected payment-challenge signal. This check did not test payment, delivery or compatibility with the Superstables client.

What price is recorded for 402registry: AI Crawler Audit?

Its listed price is $0.1.

What payment terms does 402registry: AI Crawler Audit advertise?

The listing advertises x402, Base and USDC. It names cdp as its facilitator. Check the seller's current payment challenge and authentication requirements before paying.

Where is 402registry: AI Crawler Audit listed?

In x402 Bazaar. Superstables first indexed it on 26 Sept 2026.

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