diff --git a/src/provider.h b/src/provider.h
--- a/src/provider.h
+++ b/src/provider.h
@@ -127,6 +127,33 @@
     bool isEnabled() const;
     void setEnabled(bool enabled);
 
+    /**
+     * Set a custom identifier for your application (sent along with the requests as
+     * the http agent header in addition to the applicaiton name and version).
+     *
+     * For example, you might have an application named SomeApplication, version 23,
+     * and wish to send along the data "lookandfeel.knsrc". Call this function, and
+     * the resulting agent header would be:
+     *
+     * SomeApplication/23 (+lookandfeel.knsrc)
+     *
+     * If you do not set this (or set it to an empty string), the agent string becomes
+     *
+     * SomeApplication/23
+     *
+     * @param additionalAgentInformation The extra string
+     * @since 5.65
+     */
+    void setAdditionalAgentInformation(const QString& additionalInformation);
+    /**
+     * The custom identifier sent along with requests
+     *
+     * @return The custom identifier
+     * @see setAdditionalAgentInformation(const QString&)
+     * @since 5.65
+     */
+    QString additionalAgentInformation() const;
+
     /**
     A url that identifies this provider.
     This should be used as identifier when referring to this provider but you don't want to use the full provider object.
@@ -706,6 +733,12 @@
              const QString &person, const QString &friendV, const QString &message, const QString &achievements,
              const QString &activity, const QString &content, const QString &fan, const QString &forum,
              const QString &knowledgebase, const QString &event, const QString &comment, const QString &registerUrl);
+    // TODO KF6: merge with the constructor above (i.e. remove the above one - and actually do it this time :P )
+    Provider(PlatformDependent *internals, const QUrl &baseUrl, const QString &name, const QUrl &icon,
+             const QString &person, const QString &friendV, const QString &message, const QString &achievements,
+             const QString &activity, const QString &content, const QString &fan, const QString &forum,
+             const QString &knowledgebase, const QString &event, const QString &comment, const QString &registerUrl,
+             const QString &additionalAgentInformation);
 
     friend class ProviderManager;
 };
diff --git a/src/provider.cpp b/src/provider.cpp
--- a/src/provider.cpp
+++ b/src/provider.cpp
@@ -89,6 +89,7 @@
 #include <QUrlQuery>
 #include <QNetworkReply>
 #include <QFile>
+#include <QCoreApplication>
 
 using namespace Attica;
 
@@ -122,6 +123,7 @@
     QString m_commentVersion;
     QString m_registerUrl;
     PlatformDependent *m_internals;
+    QString m_additionalAgentInformation;
 
     Private()
         : m_internals(nullptr)
@@ -144,13 +146,15 @@
         , m_commentVersion(other.m_commentVersion)
         , m_registerUrl(other.m_registerUrl)
         , m_internals(other.m_internals)
+        , m_additionalAgentInformation(other.m_additionalAgentInformation)
     {
     }
 
     Private(PlatformDependent *internals, const QUrl &baseUrl, const QString &name, const QUrl &icon,
             const QString &person, const QString &friendV, const QString &message, const QString &achievement,
             const QString &activity, const QString &content, const QString &fan, const QString &forum,
-            const QString &knowledgebase, const QString &event, const QString &comment, const QString &registerUrl)
+            const QString &knowledgebase, const QString &event, const QString &comment, const QString &registerUrl,
+            const QString &additionalAgentInformation)
         : m_baseUrl(baseUrl), m_icon(icon), m_name(name)
         , m_personVersion(person)
         , m_friendVersion(friendV)
@@ -165,6 +169,7 @@
         , m_commentVersion(comment)
         , m_registerUrl(registerUrl)
         , m_internals(internals)
+        , m_additionalAgentInformation(additionalAgentInformation)
     {
         if (m_baseUrl.isEmpty()) {
             return;
@@ -197,16 +202,26 @@
                    const QString &activity, const QString &content, const QString &fan, const QString &forum,
                    const QString &knowledgebase, const QString &event, const QString &comment)
     : d(new Private(internals, baseUrl, name, icon, person, friendV, message, achievement, activity, content,
-                    fan, forum, knowledgebase, event, comment, QString()))
+                    fan, forum, knowledgebase, event, comment, QString(), QString()))
 {
 }
 
 Provider::Provider(PlatformDependent *internals, const QUrl &baseUrl, const QString &name, const QUrl &icon,
                    const QString &person, const QString &friendV, const QString &message, const QString &achievement,
                    const QString &activity, const QString &content, const QString &fan, const QString &forum,
                    const QString &knowledgebase, const QString &event, const QString &comment, const QString &registerUrl)
     : d(new Private(internals, baseUrl, name, icon, person, friendV, message, achievement, activity, content,
-                    fan, forum, knowledgebase, event, comment, registerUrl))
+                    fan, forum, knowledgebase, event, comment, registerUrl, QString()))
+{
+}
+
+Provider::Provider(PlatformDependent *internals, const QUrl &baseUrl, const QString &name, const QUrl &icon,
+                   const QString &person, const QString &friendV, const QString &message, const QString &achievement,
+                   const QString &activity, const QString &content, const QString &fan, const QString &forum,
+                   const QString &knowledgebase, const QString &event, const QString &comment, const QString &registerUrl,
+                   const QString &additionalAgentInformation)
+    : d(new Private(internals, baseUrl, name, icon, person, friendV, message, achievement, activity, content,
+                    fan, forum, knowledgebase, event, comment, registerUrl, additionalAgentInformation))
 {
 }
 
@@ -248,6 +263,14 @@
     d->m_internals->enableProvider(d->m_baseUrl, enabled);
 }
 
+void Provider::setAdditionalAgentInformation(const QString& additionalInformation) {
+    d->m_additionalAgentInformation = additionalInformation;
+}
+
+QString Provider::additionalAgentInformation() const {
+    return d->m_additionalAgentInformation;
+}
+
 QString Provider::name() const
 {
     return d->m_name;
@@ -1603,6 +1626,18 @@
 {
     QNetworkRequest request(url);
     request.setHeader(QNetworkRequest::ContentTypeHeader,QStringLiteral("application/x-www-form-urlencoded"));
+
+    QString agentHeader;
+    if (QCoreApplication::instance()) {
+        agentHeader = QString::fromLocal8Bit("%1/%2").arg(QCoreApplication::instance()->applicationName(), QCoreApplication::instance()->applicationVersion());
+    } else {
+        agentHeader = QString::fromLocal8Bit("Attica/%1").arg(QCoreApplication::instance()->applicationVersion());
+    }
+    if (!d->m_additionalAgentInformation.isEmpty()) {
+        agentHeader = QString::fromLocal8Bit("%1 (+%2)").arg(agentHeader, d->m_additionalAgentInformation);
+    }
+    request.setHeader(QNetworkRequest::UserAgentHeader, agentHeader);
+
     if (!d->m_credentialsUserName.isEmpty()) {
         request.setAttribute((QNetworkRequest::Attribute) BaseJob::UserAttribute, QVariant(d->m_credentialsUserName));
         request.setAttribute((QNetworkRequest::Attribute) BaseJob::PasswordAttribute, QVariant(d->m_credentialsPassword));