AWS WAF own-proxy task validation: a production runbook

AWS WAF own-proxy task validation starts before createTask. For an authorized integration, AntiAwsWafTask is the documented web task when your service must supply its own proxy. The fastest operational decision is simple: do not submit the task until the protected URL, the proxy route, and the AWS WAF evidence all describe the same request path.

Start with the task boundary

CapBypass documents AntiAwsWafTask as the web challenge task that requires a caller-supplied proxy. That is different from AntiAwsWafTaskProxyLess, which uses CapBypass proxy infrastructure, and from AntiAwsWafMobileTask, which is for mobile tokens. Select the own-proxy task only when the authorized workflow requires the proxy you provide.

The minimum documented task fields are type, websiteURL, and proxy. The API endpoint is POST https://api.capbypass.pro/createTask. Keep the client key server-side. Treat proxy credentials and returned token material as secrets in logs, traces, and incident tickets.

Before task creation, record the URL that produced the WAF evidence, the proxy identifier used for that request, and the time the evidence was collected. A later failure is much easier to diagnose when the input bundle is tied to one controlled request path.

Diagnose the symptom from evidence

A task that cannot use the supplied proxy is not a script-parameter problem. Verify the proxy independently in the same authorized environment, then check its exact format against the API reference. The AWS WAF documentation says proxy is required for AntiAwsWafTask; a missing or unreachable route can produce proxy errors before the WAF fields matter.

If the page loads but a protected action still fails, capture the network evidence from that authorized flow. challenge.js appears on the token or SDK WAF domains and maps to awsChallengeJS. jsapi.js appears on the CAPTCHA WAF domains and maps to awsApiJs. The documentation associates challenge.js with page access and jsapi.js with CAPTCHA-level validation for protected actions such as sign-up, checkout, or form submission.

Do not guess at a script URL from its filename. Save the full URL observed for the exact protected page. A copied value from another host, region, account, or environment is not evidence for the request you are operating.

Validate the documented field set

Use the smallest input set that matches observed evidence. The following matrix is a request review aid, not a reason to invent values.

Observed authorized flow	Documented task input	Review rule
Protected web page and own proxy	websiteURL, proxy	Confirm the URL and proxy refer to the same controlled route.
challenge.js in network traffic	awsChallengeJS	Copy the complete observed script URL.
jsapi.js in network traffic	awsApiJs	Use the complete observed URL for CAPTCHA-level validation.
window.gokuProps values captured from the page	awsKey, awsIv, awsContext	Include all three only when they were captured together.
Visual CAPTCHA problem request	awsProblemUrl	Preserve the full observed problem endpoint URL.
Existing token needs refresh	awsExistingToken plus awsApiJs or awsChallengeJS	Do not refresh without the documented companion script field.

For a visual CAPTCHA flow, the documentation says captchaVoucher is returned only for that flow and is submitted to the Amazon CVF endpoint. For a proof-of-work challenge.js flow, the documented ready response contains cookie and token. Your post-ready handler should branch on the fields actually returned instead of assuming every response has a voucher.

Run a bounded task lifecycle

Create the task only after the input review passes. Store the returned taskId as the correlation identifier for the run, not as proof that a usable token exists. Poll POST https://api.capbypass.pro/getTaskResult with the documented clientKey and taskId until the result is ready, an API error is returned, or your service-level deadline expires.

Use a bounded retry policy. Record the task ID, attempt count, result status, error code, proxy identifier, and a redacted hash or reference for the request evidence. Do not log the full proxy credential, API key, cookie, token, or voucher. A bounded policy prevents a single failing route from creating an unbounded queue and makes an error such as a proxy connection failure distinguishable from invalid AWS WAF input.

When the result is ready, use the documented solution.cookie or solution.token only in the authorized request flow that produced the evidence. Preserve the returned solution.userAgent with the result record so your integration can review the response as one unit. Do not reuse stale output after the original route, request context, or security boundary has changed.

---

Bonus: +5% credits on every top-up

New to CapBypass? Apply code WELCOME_2026 at checkout for an extra 5% in credits on every top-up, with no minimum and no expiry. Redeem it on the top-up page.

---

Prevention checks for production releases

Make task validation a release gate. First, verify that AntiAwsWafTask is still active in current pricing and that the own-proxy schema remains documented. Next, test the supplied proxy against the authorized target route before enabling task creation. Finally, require one of these evidence states in the deployment record: automatic detection with the page URL, a captured challenge.js URL, a captured jsapi.js URL, a complete manual set of awsKey, awsIv, awsContext, and awsChallengeJS, a visual awsProblemUrl, or a documented token-refresh pair.

Alert on changes in error-code distribution rather than exposing sensitive payloads. A rise in proxy errors points to routing or credentials. A rise in invalid task data points to a field-validation regression. A rise in post-ready rejections points to a mismatch between the observed WAF flow and the returned result handling. Each signal should link to a redacted correlation record and an owner for the authorized integration.

FAQ

When should I use AntiAwsWafTask instead of AntiAwsWafTaskProxyLess?

Use AntiAwsWafTask when the authorized integration must provide its own proxy. The proxyless task uses CapBypass proxy infrastructure. Confirm the required boundary before building the request.

Do I need both awsChallengeJS and awsApiJs?

No. Provide the fields supported by the observed flow. The documentation permits both when both URLs are available, but a field should come from the exact authorized request you are validating.

What does a ready AWS WAF result contain?

The documented ready response includes cookie, token, and userAgent; captchaVoucher is present for the visual CAPTCHA flow. Handle only the fields returned for the flow you submitted.

How should I investigate a failure?

Start with the correlation record: task type, target URL, proxy identifier, captured evidence type, task ID, status, and error code. This separates proxy reachability, task-data validation, and post-ready handling without exposing credentials or tokens.

Source

The field names, task boundary, endpoints, and response shapes in this runbook are based on the current CapBypass AWS WAF documentation.