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        <loc>https://cooldev.tools/reference/http-status-codes/423</loc>
        <lastmod>2026-06-14</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.7</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-status-codes/424</loc>
        <lastmod>2026-06-14</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.7</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-status-codes/425</loc>
        <lastmod>2026-06-14</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.7</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-status-codes/426</loc>
        <lastmod>2026-06-14</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.7</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-status-codes/428</loc>
        <lastmod>2026-06-14</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.7</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-status-codes/429</loc>
        <lastmod>2026-06-14</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.7</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-status-codes/431</loc>
        <lastmod>2026-06-14</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.7</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-status-codes/444</loc>
        <lastmod>2026-06-14</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.7</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-status-codes/451</loc>
        <lastmod>2026-06-14</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.7</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-status-codes/499</loc>
        <lastmod>2026-06-14</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.7</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-status-codes/500</loc>
        <lastmod>2026-06-14</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.7</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-status-codes/501</loc>
        <lastmod>2026-06-14</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.7</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-status-codes/502</loc>
        <lastmod>2026-06-14</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.7</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-status-codes/503</loc>
        <lastmod>2026-06-14</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.7</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-status-codes/504</loc>
        <lastmod>2026-06-14</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.7</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-status-codes/505</loc>
        <lastmod>2026-06-14</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.7</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-status-codes/506</loc>
        <lastmod>2026-06-14</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.7</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-status-codes/507</loc>
        <lastmod>2026-06-14</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.7</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-status-codes/508</loc>
        <lastmod>2026-06-14</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.7</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-status-codes/509</loc>
        <lastmod>2026-06-14</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.7</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-status-codes/510</loc>
        <lastmod>2026-06-14</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.7</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-status-codes/511</loc>
        <lastmod>2026-06-14</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.7</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-status-codes/599</loc>
        <lastmod>2026-06-14</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.7</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/cron-syntax</loc>
        <lastmod>2026-06-17</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <!-- HTTP Headers Reference — add these after your existing /reference/http-status-codes entries -->

    <url>
        <loc>https://cooldev.tools/reference/http-headers</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>weekly</changefreq>
        <priority>0.9</priority>
    </url>

    <!-- Content headers -->
    <url>
        <loc>https://cooldev.tools/reference/http-headers/content-type</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/content-length</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/content-encoding</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/content-disposition</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/content-language</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/content-location</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/content-range</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>

    <!-- Caching headers -->
    <url>
        <loc>https://cooldev.tools/reference/http-headers/cache-control</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/etag</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/expires</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/age</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/vary</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/last-modified</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>

    <!-- Auth headers -->
    <url>
        <loc>https://cooldev.tools/reference/http-headers/authorization</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/www-authenticate</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/cookie</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/set-cookie</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/proxy-authenticate</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/proxy-authorization</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/authentication-info</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/proxy-authentication-info</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>

    <!-- Security headers -->
    <url>
        <loc>https://cooldev.tools/reference/http-headers/content-security-policy</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/content-security-policy-report-only</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/strict-transport-security</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/x-frame-options</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/x-content-type-options</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/referrer-policy</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/cross-origin-resource-policy</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/cross-origin-opener-policy</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/cross-origin-embedder-policy</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>

    <!-- General headers -->
    <url>
        <loc>https://cooldev.tools/reference/http-headers/host</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/date</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/connection</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/server</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/allow</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/via</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/from</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/max-forwards</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/upgrade</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/expect</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/user-agent</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/referer</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/retry-after</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/location</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>

    <!-- Transfer headers -->
    <url>
        <loc>https://cooldev.tools/reference/http-headers/transfer-encoding</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/trailer</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/range</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/accept-ranges</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>

    <!-- Accept family headers -->
    <url>
        <loc>https://cooldev.tools/reference/http-headers/accept</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/accept-encoding</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/accept-language</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>

    <!-- Group pages -->
    <url>
        <loc>https://cooldev.tools/reference/http-headers/cors</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/conditional-requests</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/websocket-handshake</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/sec-fetch</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <!-- Tier 2 headers — add these after the existing /reference/http-headers entries -->

    <!-- Observability -->
    <url>
        <loc>https://cooldev.tools/reference/http-headers/server-timing</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/traceparent</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/tracestate</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/nel</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>

    <!-- Proxy -->
    <url>
        <loc>https://cooldev.tools/reference/http-headers/forwarded</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/alt-svc</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/alt-used</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/link</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/priority</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/cache-status</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/cdn-cache-control</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/cdn-loop</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
    <url>
        <loc>https://cooldev.tools/reference/http-headers/proxy-status</loc>
        <lastmod>2026-06-23</lastmod>
        <changefreq>monthly</changefreq>
        <priority>0.8</priority>
    </url>
</urlset>
