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Cloudflare URL Scanner

Overview

Cloudflare URL Scanner is a public tool: enter any URL, get a detailed report covering HTTP response headers, TLS certificate chain, DNS records, detected technologies (CMS / framework / analytics), performance data, security signals (malicious classification, certificate transparency, etc.). A core primitive for security researchers and developers diagnosing what a URL is actually doing.

Exposed programmatically via the URL Scanner API (POST /accounts/$ID/urlscanner/v2/scan).

Agent Readiness integration (2026-04-17)

As part of Cloudflare's 2026 Agents Week, URL Scanner gains an Agent Readiness tab that surfaces the same four-dimension Agent Readiness Score analysis as isitagentready.com — which of the binary checks pass, what dimension-level the site reaches, and actionable guidance to improve the score.

Programmatic access via a new scan-request option:

curl -X POST https://api.cloudflare.com/client/v4/accounts/$ACCOUNT_ID/urlscanner/v2/scan \
    -H 'Content-Type: application/json' \
    -H "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \
    -d '{
          "url": "https://www.example.com",
          "options": {"agentReadiness": true}
        }'

Why this matters

  • URL Scanner had a pre-existing audience of security researchers + developers looking at existing sites — embedding Agent Readiness here brings the check in front of that audience rather than requiring them to seek out isitagentready.com.
  • Programmatic access is load-bearing for monitoring workflows — e.g. a CI check that runs on every docs deploy, a weekly sweep over a site portfolio, an observability pipeline that tracks Agent Readiness as a KPI alongside uptime + Web Vitals.
  • The same check at two entry points (isitagentready + URL Scanner) is a distribution play rather than a duplication — same scoring substrate, two audiences.

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