diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1c5b2d99227..e880622c6e8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@
 
 ## Unversioned
 
+- Major: Added the ability to autocomplete Fossabot & Streamelements commands. (#3209)
 - Minor: Remove TwitchEmotes.com attribution and the open/copy options when right-clicking a Twitch Emote. (#2214, #3136)
 - Minor: Strip leading @ and trailing , from username in /user and /usercard commands. (#3143)
 - Minor: Display a system message when reloading subscription emotes to match BTTV/FFZ behavior (#3135)
diff --git a/chatterino.pro b/chatterino.pro
index 2586ac790b6..cfbd005f5c0 100644
--- a/chatterino.pro
+++ b/chatterino.pro
@@ -191,6 +191,7 @@ SOURCES += \
     src/messages/SharedMessageBuilder.cpp \
     src/providers/bttv/BttvEmotes.cpp \
     src/providers/bttv/LoadBttvChannelEmote.cpp \
+    src/providers/chatterino/ChatCommands.cpp \
     src/providers/chatterino/ChatterinoBadges.cpp \
     src/providers/colors/ColorProvider.cpp \
     src/providers/emoji/Emojis.cpp \
@@ -431,6 +432,7 @@ HEADERS += \
     src/PrecompiledHeader.hpp \
     src/providers/bttv/BttvEmotes.hpp \
     src/providers/bttv/LoadBttvChannelEmote.hpp \
+    src/providers/chatterino/ChatCommands.hpp \
     src/providers/chatterino/ChatterinoBadges.hpp \
     src/providers/colors/ColorProvider.hpp \
     src/providers/emoji/Emojis.hpp \
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 78015123f46..0e5d35426e6 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -169,6 +169,8 @@ set(SOURCE_FILES
 
         providers/chatterino/ChatterinoBadges.cpp
         providers/chatterino/ChatterinoBadges.hpp
+        providers/chatterino/ChatCommands.hpp
+        providers/chatterino/ChatCommands.cpp
 
         providers/colors/ColorProvider.cpp
         providers/colors/ColorProvider.hpp
diff --git a/src/common/CompletionModel.cpp b/src/common/CompletionModel.cpp
index ac96b85b4d0..9d36eb416ef 100644
--- a/src/common/CompletionModel.cpp
+++ b/src/common/CompletionModel.cpp
@@ -121,6 +121,14 @@ void CompletionModel::refresh(const QString &prefix, bool isFirstWord)
         }
     }
 
+    if (auto cmds = tc->chatCommands())
+    {
+        for (auto &&cmd : *cmds)
+        {
+            addString(cmd.prefix, TaggedString::Type::Command);
+        }
+    }
+
     // Bttv Global
     for (auto &emote : *getApp()->twitch2->getBttvEmotes().emotes())
     {
diff --git a/src/providers/chatterino/ChatCommands.cpp b/src/providers/chatterino/ChatCommands.cpp
new file mode 100644
index 00000000000..e8b46204160
--- /dev/null
+++ b/src/providers/chatterino/ChatCommands.cpp
@@ -0,0 +1,47 @@
+#include "ChatCommands.hpp"
+
+#include <QJsonArray>
+#include <QJsonDocument>
+#include <QJsonObject>
+#include "common/NetworkRequest.hpp"
+#include "common/Outcome.hpp"
+#include "common/QLogging.hpp"
+
+namespace chatterino {
+
+void loadChatCommands(
+    const QString &channelId,
+    std::function<void(std::vector<ExternalChatCommand> &&)> cb)
+{
+    NetworkRequest("https://api.chatterino.com/chat-commands/twitch/" +
+                   channelId)
+        .timeout(20000)
+        .onSuccess([cb = std::move(cb), channelId](auto result) -> Outcome {
+            auto json = result.parseJsonArray();
+            auto out = std::vector<ExternalChatCommand>();
+
+            for (auto &&cmdValue : json)
+            {
+                auto cmd = cmdValue.toObject();
+
+                ExternalChatCommand ex;
+                ex.prefix = cmd.value("prefix").toString();
+                ex.description = cmd.value("description").toString();
+                ex.source = cmd.value("source").toString();
+
+                out.push_back(std::move(ex));
+            }
+
+            cb(std::move(out));
+
+            return Success;
+        })
+        .onError([channelId](NetworkResult result) {
+            qCWarning(chatterinoFfzemotes)
+                << "Error loading chat commands" << channelId << ", error"
+                << result.status();
+        })
+        .execute();
+}
+
+}  // namespace chatterino
diff --git a/src/providers/chatterino/ChatCommands.hpp b/src/providers/chatterino/ChatCommands.hpp
new file mode 100644
index 00000000000..7c0e80ff872
--- /dev/null
+++ b/src/providers/chatterino/ChatCommands.hpp
@@ -0,0 +1,20 @@
+#pragma once
+
+#include <functional>
+#include <memory>
+
+namespace chatterino {
+
+class Channel;
+
+struct ExternalChatCommand {
+    QString prefix;
+    QString description;
+    QString source;
+};
+
+void loadChatCommands(
+    const QString &channelId,
+    std::function<void(std::vector<ExternalChatCommand> &&)> cb);
+
+}  // namespace chatterino
diff --git a/src/providers/twitch/TwitchChannel.cpp b/src/providers/twitch/TwitchChannel.cpp
index db35de7b259..30e91c24d9f 100644
--- a/src/providers/twitch/TwitchChannel.cpp
+++ b/src/providers/twitch/TwitchChannel.cpp
@@ -180,6 +180,7 @@ TwitchChannel::TwitchChannel(const QString &name)
         this->refreshCheerEmotes();
         this->refreshFFZChannelEmotes(false);
         this->refreshBTTVChannelEmotes(false);
+        this->refreshChatCommands();
     });
 
     // timers
@@ -321,6 +322,29 @@ boost::optional<ChannelPointReward> TwitchChannel::channelPointReward(
     return it->second;
 }
 
+std::shared_ptr<const std::vector<ExternalChatCommand>>
+    TwitchChannel::chatCommands() const
+{
+    return this->chatCommands_;
+}
+
+void TwitchChannel::refreshChatCommands()
+{
+    if (this->roomID_.access()->isEmpty())
+    {
+        qCDebug(chatterinoTwitch) << "[TwitchChannel" << this->getName()
+                                  << "] Refreshing chat commands (Missing ID)";
+        return;
+    }
+
+    loadChatCommands(*this->roomID_.access(),
+                     [this](std::vector<ExternalChatCommand> &&cmds) {
+                         this->chatCommands_ =
+                             std::make_shared<std::vector<ExternalChatCommand>>(
+                                 std::move(cmds));
+                     });
+}
+
 void TwitchChannel::sendMessage(const QString &message)
 {
     auto app = getApp();
diff --git a/src/providers/twitch/TwitchChannel.hpp b/src/providers/twitch/TwitchChannel.hpp
index 84d4adaf214..74b2fdec577 100644
--- a/src/providers/twitch/TwitchChannel.hpp
+++ b/src/providers/twitch/TwitchChannel.hpp
@@ -7,6 +7,7 @@
 #include "common/ChatterSet.hpp"
 #include "common/Outcome.hpp"
 #include "common/UniqueAccess.hpp"
+#include "providers/chatterino/ChatCommands.hpp"
 #include "providers/twitch/ChannelPointReward.hpp"
 #include "providers/twitch/TwitchEmotes.hpp"
 #include "providers/twitch/api/Helix.hpp"
@@ -117,6 +118,11 @@ class TwitchChannel : public Channel,
     boost::optional<ChannelPointReward> channelPointReward(
         const QString &rewardId) const;
 
+    // Chat commands
+    std::shared_ptr<const std::vector<ExternalChatCommand>> chatCommands()
+        const;
+    void refreshChatCommands();
+
 private:
     struct NameOptions {
         QString displayName;
@@ -169,6 +175,7 @@ class TwitchChannel : public Channel,
         badgeSets_;  // "subscribers": { "0": ... "3": ... "6": ...
     UniqueAccess<std::vector<CheerEmoteSet>> cheerEmoteSets_;
     UniqueAccess<std::map<QString, ChannelPointReward>> channelPointRewards_;
+    std::shared_ptr<const std::vector<ExternalChatCommand>> chatCommands_;
 
     bool mod_ = false;
     bool vip_ = false;