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Cloudflare’s AI Crawl Control is the main place to decide whether identified AI crawlers may access content, should be blocked, or can be charged through Pay Per Crawl. Payment configuration is in AI Crawl Control → Payments → Pay Per Crawl. A 402 response can mean either a block configured to return “Payment Required” or the first step in Pay Per Crawl’s signed payment exchange; those are different outcomes. WAF custom rules and bot settings can also stop a crawler before the payment flow runs.

Which settings decide whether a crawler can access your site?

In AI Crawl Control, review crawler activity and choose an action for each crawler:

  • Allow: permits access under this crawler policy, but does not override other controls. WAF custom rules and robots.txt enforcement may still affect the request.
  • Block: refuses access. The response can be configured as 403 Forbidden or 402 Payment Required, with a custom plain-text body.
  • Charge: routes eligible crawlers through Pay Per Crawl when that feature is enabled. It is not simply an instruction to return a 402: the crawler must follow the payment handshake for a successful paid retrieval.

Cloudflare documents monitoring robots.txt compliance as part of AI Crawl Control. An Allow choice should therefore not be treated as a blanket bypass of robots.txt or the zone’s other security policies. See Cloudflare’s AI Crawl Control documentation and Pay Per Crawl pricing and configuration.

How do I enable bot payments with Pay Per Crawl?

  1. Open AI Crawl Control → Payments → Pay Per Crawl.
  2. Select Enable, set the default price, and save.
  3. Choose Charge for the crawlers that should be offered the paid-access flow.

Cloudflare labels Pay Per Crawl as a private beta; availability depends on account eligibility. The documented minimum is USD $0.001 per crawl. Cloudflare says this configured amount is charged for each successful content retrieval returning HTTP 200, not merely for sending a 402 challenge. Check the current account and documentation for current availability and settings.

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What happens in the Pay Per Crawl 402 exchange?

  1. The crawler requests content set to Charge and receives HTTP/2 402 Payment Required with a crawler-price response header.
  2. To retry, the crawler sends either crawler-exact-price matching the quoted amount or crawler-max-price covering it.
  3. The payment header must be included among the Web Bot Auth signature-input components. If it is not signed as required, payment processing can fail.
  4. After successful payment and content retrieval, the response is HTTP 200 and includes crawler-charged. A failed paid request can return 402 with crawler-error.

Cloudflare’s crawler-flow documentation describes this handshake. A 402 by itself does not confirm that a payment was collected. Cloudflare says repeat crawls incur the configured cost again, while /robots.txt, /sitemap.xml, /security.txt, /.well-known/security.txt, and /crawlers.json are always free.

How is a 402 block response different from a payment challenge?

A Block action can be configured to return either 403 or 402 and a custom plain-text message. That 402 communicates a refusal or payment/licensing condition; it is not, on its own, the Pay Per Crawl exchange described above. In the paid flow, the crawler receives a price header and must submit the appropriate signed payment header before successful access can return HTTP 200.

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Cloudflare limits the AI Crawl Control response-code selector to 403 and 402. Its documentation warns that manually changing the associated WAF rule to a different response code can prevent AI Crawl Control from enforcing the selected code. See Cloudflare’s AI Crawl Control documentation.

Why might a crawler be blocked instead of charged?

Cloudflare documents this processing order: AI Crawl Control crawler-block WAF rules, then Cloudflare bot solutions, then Pay Per Crawl. A request blocked by an earlier control never reaches the charge step. In particular, Cloudflare says to turn off the Block AI Bots bot configuration when the intention is to use Pay Per Crawl. WAF custom rules can also affect crawlers marked Allow. See Cloudflare’s advanced AI Crawl Control guide and WAF integration guidance.

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  • Review WAF custom rules that match the crawler’s request.
  • Check Cloudflare bot settings, including Block AI Bots, for an earlier denial.
  • Confirm that the crawler has the intended Allow, Block, or Charge policy.
  • Check robots.txt handling separately; an Allow action is not a universal override.

How can I exempt routes or set different prices?

Keep selected routes free

Create a Configuration Rule under Rules, use a URI Full condition for the routes to exempt (such as an exact homepage match or a public-directory wildcard), and enable Disable Pay Per Crawl. Cloudflare’s advanced guidance suggests leaving navigation and discovery pages available and excluding functional routes such as login, search, or APIs. The five paths listed above remain free regardless.

Use dynamic pricing

The zone price is the default. With dynamic pricing enabled, the origin can return a crawler-price response header—for example, crawler-price: USD 3.14—to replace the default for that request. Cloudflare says the price header is forwarded to the client when it is being asked to pay. This option is documented in the advanced configuration guide.

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When does the x402 Worker template make sense?

Cloudflare also offers an x402 Payment-Gated Proxy Worker template using the x402 protocol and HTTP 402. It is an implementation option for gating selected routes or charging bots while leaving human visits free, rather than another toggle for AI Crawl Control’s Pay Per Crawl. Use it when route-level payment logic is needed and you are prepared to deploy and configure a Worker-based flow. The template is covered in Cloudflare’s advanced AI Crawl Control documentation.

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