{
  "http": {
    "headers": {
      "Sec-Purpose": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/HTTP/Reference/Headers/Sec-Purpose",
          "spec_url": [
            "https://fetch.spec.whatwg.org/#sec-purpose-header",
            "https://wicg.github.io/nav-speculation/prefetch.html#sec-purpose-header"
          ],
          "tags": [
            "web-features:link-rel-prefetch"
          ],
          "support": {
            "chrome": {
              "version_added": "110"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "115"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": {
              "version_added": false
            },
            "safari": {
              "version_added": false
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "prefetch": {
          "__compat": {
            "description": "`Sec-Purpose` for `<link rel=\"prefetch\">` prefetch",
            "tags": [
              "web-features:link-rel-prefetch"
            ],
            "support": {
              "chrome": {
                "version_added": false,
                "notes": "Doesn't support `Sec-Purpose` for `<link rel=\"prefetch\">`. In Chrome, the legacy `Purpose: prefetch` header is used to indicate a `link` request is a prefetch. See [bug 40236973](https://crbug.com/40236973)."
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "115",
                "notes": [
                  "`Sec-Purpose: prefetch` replaces the non-standard `X-moz: prefetch` header that was used to indicate a `link` prefetch request in earlier versions.",
                  "Prefetch requests should also include the header `Accept` header string for navigations, but `Accept: */*` is sent instead."
                ]
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": {
                "version_added": false
              },
              "safari": {
                "version_added": false
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "speculationrules": {
          "__compat": {
            "description": "`Sec-Purpose` for `<script type=\"speculationrules\">` prefetch",
            "tags": [
              "web-features:speculation-rules"
            ],
            "support": {
              "chrome": {
                "version_added": "110"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": false
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": {
                "version_added": false
              },
              "safari": {
                "version_added": "26.2",
                "flags": [
                  {
                    "type": "preference",
                    "name": "SpeculationRules prefetch"
                  }
                ]
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": true,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      }
    }
  }
}