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diff --git a/docs/libcurl/opts/CURLOPT_USERAGENT.md b/docs/libcurl/opts/CURLOPT_USERAGENT.md
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+---
+c: Copyright (C) Daniel Stenberg, <daniel.se>, et al.
+SPDX-License-Identifier: curl
+Title: CURLOPT_USERAGENT
+Section: 3
+Source: libcurl
+See-also:
+  - CURLOPT_CUSTOMREQUEST (3)
+  - CURLOPT_HTTPHEADER (3)
+  - CURLOPT_REFERER (3)
+  - CURLOPT_REQUEST_TARGET (3)
+---
+
+# NAME
+
+CURLOPT_USERAGENT - HTTP user-agent header
+
+# SYNOPSIS
+
+~~~c
+#include <curl/curl.h>
+
+CURLcode curl_easy_setopt(CURL *handle, CURLOPT_USERAGENT, char *ua);
+~~~
+
+# DESCRIPTION
+
+Pass a pointer to a null-terminated string as parameter. It is used to set the
+User-Agent: header field in the HTTP request sent to the remote server. You
+can also set any custom header with CURLOPT_HTTPHEADER(3).
+
+The application does not have to keep the string around after setting this
+option.
+
+# DEFAULT
+
+NULL, no User-Agent: header is used by default.
+
+# PROTOCOLS
+
+HTTP, HTTPS
+
+# EXAMPLE
+
+~~~c
+int main(void)
+{
+  CURL *curl = curl_easy_init();
+  if(curl) {
+    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
+
+    curl_easy_setopt(curl, CURLOPT_USERAGENT, "Dark Secret Ninja/1.0");
+
+    curl_easy_perform(curl);
+  }
+}
+~~~
+
+# AVAILABILITY
+
+As long as HTTP is supported
+
+# RETURN VALUE
+
+Returns CURLE_OK if HTTP is supported, CURLE_UNKNOWN_OPTION if not, or
+CURLE_OUT_OF_MEMORY if there was insufficient heap space.