diff --git a/config.json b/config.json
index 4971775..172b4c6 100644
--- a/config.json
+++ b/config.json
@@ -1,16 +1,16 @@
 {
     "address": "",
-    "description": "The default GaiaNet node config with a Llama-3.2-3B-Instruct model and a Paris tour guide knowledge base.",
+    "description": "The default GaiaNet node config with a Qwen3-4B model and a Paris tour guide knowledge base.",
     "domain": "gaia.domains",
     "llamaedge_chat_port": "9068",
     "llamaedge_embedding_port": "9069",
     "llamaedge_port": "8080",
-    "chat": "https://huggingface.co/second-state/Llama-3.2-3B-Instruct-GGUF/resolve/main/Llama-3.2-3B-Instruct-Q5_K_M.gguf",
-    "chat_name": "Llama-3.2-3B-Instruct",
-    "chat_ctx_size": "16384",
+    "chat": "https://huggingface.co/second-state/Llama-3-Groq-8B-Tool-Use-GGUF/resolve/main/Llama-3-Groq-8B-Tool-Use-Q5_K_M.gguf",
+    "chat_name": "Llama-3-Groq-8B",
+    "chat_ctx_size": "8192",
     "chat_batch_size": "128",
     "chat_ubatch_size": "128",
-    "prompt_template": "llama-3-chat",
+    "prompt_template": "groq-llama3-tool",
     "reverse_prompt": "",
     "system_prompt": "You are a tour guide in Paris, France. Please answer the question from a Paris visitor accurately.",
     "context_window": "1",
diff --git a/gaianet b/gaianet
index d2f1111..72a0eca 100755
--- a/gaianet
+++ b/gaianet
@@ -9,6 +9,15 @@ version="0.5.0"
 # path to the default gaianet base directory. It could be changed by the --base option
 gaianet_base_dir="$HOME/gaianet"
 
+# port of kw-search-server
+kwsearch_server_port=12306
+
+# port of qdrant mcp server
+qdrant_mcp_server_port=8003
+
+# port of kw-search mcp server
+kwsearch_mcp_server_port=8005
+
 # We will make sure that the path is setup in case the user runs gaianet immediately after init
 source $HOME/.wasmedge/env
 
@@ -27,6 +36,88 @@ if [ "$(uname)" == "Darwin" ] || [ "$(expr substr $(uname -s) 1 5)" == "Linux" ]
     ulimit -n 10000
 fi
 
+# Preset all service corresponding variables, initially set to false
+gaia_calculator=false
+gaia_weather=false
+gaia_qdrant=false
+gaia_keyword_search=false
+
+# Check MCP servers
+check_mcp_servers() {
+    # Usage hint
+    if [ $# -ne 1 ]; then
+        echo "Usage: $0 <config_file>"
+        exit 1
+    fi
+
+    # Define configuration file path
+    # CONFIG_FILE="$gaianet_base_dir/mcp_config.toml"
+    CONFIG_FILE="$1"
+
+    # Parse configuration file
+    current_name=""
+    while IFS= read -r line; do
+        # Match name field
+        if [[ $line =~ name\ *=\ *\"([^\"]+)\" ]]; then
+            # Replace "-" in name with "_" to use as variable name
+            current_name=$(echo "${BASH_REMATCH[1]}" | sed 's/-/_/g')
+        fi
+
+        # Match enable field
+        if [[ $line =~ enable\ *=\ *(true|false) ]]; then
+            enable_value="${BASH_REMATCH[1]}"
+            if [[ "$enable_value" == "true" ]]; then
+                eval "${current_name}=true"
+            fi
+        fi
+    done < "$CONFIG_FILE"
+}
+
+# Enable/disable specified mcp-server in `gaianet/mcp_config.toml`
+toggle_mcp_server() {
+    # Usage hint
+    if [ $# -ne 2 ]; then
+        echo "Usage: $0 <config_file> <service_name>"
+        exit 1
+    fi
+
+    CONFIG_FILE="$1"
+    TARGET_SERVICE="$2"
+    TMP_FILE="${CONFIG_FILE}.tmp"
+
+    found_service=false
+
+    # Process file
+    while IFS= read -r line; do
+        # Check if this is the name line for the target service
+        if [[ $line =~ name\ *=\ *\"${TARGET_SERVICE}\" ]]; then
+            found_service=true
+            echo "$line" >> "$TMP_FILE"
+            continue
+        fi
+
+        # If in target service block and encountered enable field
+        if $found_service && [[ $line =~ enable\ *=\ *(true|false) ]]; then
+            current_status="${BASH_REMATCH[1]}"
+            if [[ "$current_status" == "true" ]]; then
+                new_status="false"
+            else
+                new_status="true"
+            fi
+            echo "enable = ${new_status}" >> "$TMP_FILE"
+            found_service=false
+            # echo "Toggled ${TARGET_SERVICE} to ${new_status}"
+            continue
+        fi
+
+        # Write other lines directly
+        echo "$line" >> "$TMP_FILE"
+    done < "$CONFIG_FILE"
+
+    # Replace original file
+    mv "$TMP_FILE" "$CONFIG_FILE"
+}
+
 info() {
     printf "${GREEN}$1${NC}\n\n"
 }
@@ -770,6 +861,130 @@ start_qdrant_instance() {
 
 }
 
+start_qdrant_mcp_server() {
+    qdrant_mcp_server_running=false
+    if [ "$(uname)" == "Darwin" ] || [ "$(expr substr $(uname -s) 1 5)" == "Linux" ]; then
+        if lsof -Pi :$qdrant_mcp_server_port -sTCP:LISTEN -t >/dev/null ; then
+            qdrant_mcp_server_running=true
+        fi
+    elif [ "$(expr substr $(uname -s) 1 10)" == "MINGW32_NT" ]; then
+        printf "For Windows users, please run this script in WSL.\n"
+
+        # stop
+        stop_force
+
+        exit 1
+    else
+        printf "Only support Linux, MacOS and Windows.\n"
+
+        # stop
+        stop_force
+
+        exit 1
+    fi
+
+    if [ "$qdrant_mcp_server_running" = false ]; then
+        qdrant_mcp_server_executable="$gaianet_base_dir/bin/gaia-qdrant-mcp-server"
+        if [ -f "$qdrant_mcp_server_executable" ]; then
+            nohup $qdrant_mcp_server_executable > $log_dir/start-qdrant-mcp-server.log 2>&1 &
+            sleep 5
+            qdrant_mcp_server_pid=$!
+            echo $qdrant_mcp_server_pid > $gaianet_base_dir/qdrant-mcp-server.pid
+            info "\n      👍 Done! Qdrant MCP server started with pid: $qdrant_mcp_server_pid"
+        else
+            error "      ❌ Qdrant MCP server binary not found at $qdrant_mcp_server_executable\n\n"
+
+            # stop
+            stop_force
+
+            exit 1
+        fi
+    fi
+
+}
+
+start_kw_search_server() {
+    kwsearch_server_running=false
+    if [ "$(uname)" == "Darwin" ] || [ "$(expr substr $(uname -s) 1 5)" == "Linux" ]; then
+        if lsof -Pi :$kwsearch_server_port -sTCP:LISTEN -t >/dev/null ; then
+            kwsearch_server_running=true
+        fi
+    elif [ "$(expr substr $(uname -s) 1 10)" == "MINGW32_NT" ]; then
+        printf "For Windows users, please run this script in WSL.\n"
+
+        # stop
+        stop_force
+
+        exit 1
+    else
+        printf "Only support Linux, MacOS and Windows.\n"
+
+        # stop
+        stop_force
+
+        exit 1
+    fi
+
+    if [ "$kwsearch_server_running" = false ]; then
+        kwsearch_server_executable="$gaianet_base_dir/bin/kw-search-server"
+        if [ -f "$kwsearch_server_executable" ]; then
+            nohup $kwsearch_server_executable > $log_dir/start-kw-search-server.log 2>&1 &
+            sleep 2
+            kwsearch_server_pid=$!
+            echo $kwsearch_server_pid > $gaianet_base_dir/kw-search-server.pid
+            info "\n      👍 Done! kw-search-server started with pid: $kwsearch_server_pid"
+        else
+            error "      ❌ kw-search-server binary not found at $kwsearch_server_executable\n\n"
+
+            # stop
+            stop_force
+
+            exit 1
+        fi
+    fi
+}
+
+start_kw_search_mcp_server() {
+    kwsearch_mcp_server_running=false
+    if [ "$(uname)" == "Darwin" ] || [ "$(expr substr $(uname -s) 1 5)" == "Linux" ]; then
+        if lsof -Pi :$kwsearch_mcp_server_port -sTCP:LISTEN -t >/dev/null ; then
+            kwsearch_mcp_server_running=true
+        fi
+    elif [ "$(expr substr $(uname -s) 1 10)" == "MINGW32_NT" ]; then
+        printf "For Windows users, please run this script in WSL.\n"
+
+        # stop
+        stop_force
+
+        exit 1
+    else
+        printf "Only support Linux, MacOS and Windows.\n"
+
+        # stop
+        stop_force
+
+        exit 1
+    fi
+
+    if [ "$kwsearch_mcp_server_running" = false ]; then
+        kwsearch_mcp_server_executable="$gaianet_base_dir/bin/gaia-kwsearch-mcp-server"
+        if [ -f "$kwsearch_mcp_server_executable" ]; then
+            nohup $kwsearch_mcp_server_executable > $log_dir/start-kwsearch-mcp-server.log 2>&1 &
+            sleep 5
+            kwsearch_mcp_server_pid=$!
+            echo $kwsearch_mcp_server_pid > $gaianet_base_dir/kwsearch-mcp-server.pid
+            info "\n      👍 Done! kwsearch-mcp-server started with pid: $kwsearch_mcp_server_pid"
+        else
+            error "      ❌ kw-search-mcp-server binary not found at $kwsearch_mcp_server_executable\n\n"
+
+            # stop
+            stop_force
+
+            exit 1
+        fi
+    fi
+}
+
 start_gaia_nexus() {
 
     # parse domain for gaia-nexus
@@ -824,6 +1039,7 @@ start_gaia_nexus() {
     cd $gaianet_base_dir
     if [ "$rag_mode" = true ]; then
         nohup $gaianet_base_dir/bin/gaia-nexus \
+        --mcp \
         --rag \
         --check-health \
         --check-health-interval 60 \
@@ -835,12 +1051,13 @@ start_gaia_nexus() {
         --vdb-collection-name $qdrant_collection_name \
         --vdb-limit $qdrant_limit \
         --vdb-score-threshold $qdrant_score_threshold \
-        --rag-prompt "'$rag_prompt'" \
+        --rag-prompt "$rag_prompt" \
         --rag-context-window $context_window \
         --rag-policy $rag_policy \
         --port $llamaedge_port > $log_dir/start-gaia-nexus.log 2>&1 &
     else
         nohup $gaianet_base_dir/bin/gaia-nexus \
+        --mcp \
         --check-health \
         --check-health-interval 60 \
         --web-ui $gaianet_base_dir/dashboard \
@@ -995,9 +1212,13 @@ start() {
     cd $gaianet_base_dir
     wasmedge --dir .:. registry.wasm
 
+    # 2. check mcp servers
+    printf "[2/4] Checking the mcp servers ...\n"
+    check_mcp_servers $gaianet_base_dir/mcp_config.toml
+    info "\n    👍 Done!"
 
-    # 2. start downstream servers
-    printf "[2/4] Starting downstream servers ...\n\n"
+    # 3. start downstream servers
+    printf "[3/4] Starting downstream servers ...\n\n"
 
     # start chat server
     printf "    * Start chat server ...⏳\n\n"
@@ -1011,12 +1232,42 @@ start() {
     if [ "$rag_mode" = true ]; then
         printf "    * Starting Qdrant instance ...⏳\n"
         start_qdrant_instance
+
+        if [ "$gaia_qdrant" = false ]; then
+            # enable gaia_qdrant in mcp_config.toml
+            toggle_mcp_server $gaianet_base_dir/mcp_config.toml "gaia-qdrant"
+        fi
+
+        printf "    * Starting Qdrant MCP server ...⏳\n"
+        start_qdrant_mcp_server
+
+    else
+        if [ "$gaia_qdrant" = true ]; then
+            # disable gaia_qdrant in mcp_config.toml
+            toggle_mcp_server $gaianet_base_dir/mcp_config.toml "gaia-qdrant"
+        fi
+    fi
+
+    # start kw-search-mcp-server
+    if [ "$rag_mode" = true ]; then
+        if [ "$gaia_keyword_search" = true ]; then
+            printf "    * Starting kw-search-server ...⏳\n"
+            start_kw_search_server
+
+            printf "    * Starting kw-search-mcp-server ...⏳\n"
+            start_kw_search_mcp_server
+        fi
+    else
+        if [ "$gaia_keyword_search" = true ]; then
+            # disable gaia_keyword_search in mcp_config.toml
+            toggle_mcp_server $gaianet_base_dir/mcp_config.toml "gaia-keyword-search"
+        fi
     fi
 
-    # 3. start gaia-frp
+    # 4. start gaia-frp
     if [ "$local_only" -eq 0 ]; then
         # start gaia-frp
-        printf "[3/4] Starting gaia-frp ...\n\n"
+        printf "[4/4] Starting gaia-frp ...\n\n"
 
         nohup $gaianet_base_dir/bin/frpc -c $gaianet_base_dir/gaia-frp/frpc.toml > $log_dir/start-gaia-frp.log 2>&1 &
         sleep 2
@@ -1029,16 +1280,18 @@ start() {
     fi
 
 
-    # 4. start gaia-nexus
-    printf "[4/4] Starting gaia-nexus ...\n\n"
+    # 5. start gaia-nexus
+    printf "[5/5] Starting gaia-nexus ...\n\n"
+    printf "      ❗ The process may take a few seconds. Please wait ...\n\n"
     start_gaia_nexus
 
     # register downstream servers
     printf "    * Register embedding server ...⏳\n\n"
     register_embedding_server
+    sleep 3
     printf "    * Registering chat server ...⏳\n\n"
     register_chat_server
-
+    sleep 3
 
 
     if [ "$local_only" -eq 0 ]; then
@@ -1065,15 +1318,34 @@ stop_force() {
     printf "[+] Stopping WasmEdge, Qdrant and frpc ...\n"
 
     pkill -9 qdrant || true
+    pkill -9 gaia-qdrant-mcp-server || true
+    pkill -9 kw-search-server || true
+    pkill -9 gaia-kwsearch-mcp-server || true
     pkill -9 gaia-nexus || true
     pkill -9 wasmedge || true
     pkill -9 frpc || true
 
+
     qdrant_pid=$gaianet_base_dir/qdrant.pid
     if [ -f $qdrant_pid ]; then
         rm $qdrant_pid
     fi
 
+    qdrant_mcp_server_pid=$gaianet_base_dir/qdrant-mcp-server.pid
+    if [ -f $qdrant_mcp_server_pid ]; then
+        rm $qdrant_mcp_server_pid
+    fi
+
+    kw_search_server_pid=$gaianet_base_dir/kw-search-server.pid
+    if [ -f $kw_search_server_pid ]; then
+        rm $kw_search_server_pid
+    fi
+
+    kw_search_mcp_server_pid=$gaianet_base_dir/kwsearch-mcp-server.pid
+    if [ -f $kw_search_mcp_server_pid ]; then
+        rm $kw_search_mcp_server_pid
+    fi
+
     chat_server_pid=$gaianet_base_dir/chat_server.pid
     if [ -f $chat_server_pid ]; then
         rm $chat_server_pid
diff --git a/install.sh b/install.sh
index d9be109..2533b2b 100644
--- a/install.sh
+++ b/install.sh
@@ -8,16 +8,18 @@ target=$(uname -m)
 # represents the directory where the script is located
 cwd=$(pwd)
 
-repo_branch="main"
+repo_branch="feat-nexus-mcp-groq"
 version="0.5.0"
-llama_api_server_version="0.17.0"
-gaia_nexus_version="0.1.0"
+llama_api_server_version="0.18.3"
+gaia_nexus_version="0.2.1"
 wasmedge_version="0.14.1"
 ggml_bn="b5201"
 vector_version="0.38.0"
 dashboard_version="v3.1"
-assistant_version="0.4.3"
+# assistant_version="0.4.3"
 qdrant_version="v1.13.4"
+mcp_version="0.1.1"
+kw_search_server_version="0.1.1"
 
 # 0: do not reinstall, 1: reinstall
 reinstall=0
@@ -589,9 +591,8 @@ fi
 # 7. Download LlamaEdge API server
 printf "[+] Downloading LlamaEdge API server ...\n"
 # download llama-api-server.wasm
-# check_curl https://github.com/LlamaEdge/LlamaEdge/releases/download/$llama_api_server_version/llama-api-server.wasm $gaianet_base_dir/llama-api-server.wasm
+check_curl https://github.com/LlamaEdge/LlamaEdge/releases/download/$llama_api_server_version/llama-api-server.wasm $gaianet_base_dir/llama-api-server.wasm
 # check_curl https://github.com/GaiaNet-AI/gaia-nexus-release/releases/download/$gaia_nexus_version/llama-api-server.wasm $gaianet_base_dir/llama-api-server.wasm
-check_curl https://github.com/GaiaNet-AI/gaianet-node/releases/download/$version/llama-api-server.wasm $gaianet_base_dir/llama-api-server.wasm
 
 info "    👍 Done! The llama-api-server.wasm is downloaded in $gaianet_base_dir"
 
@@ -630,12 +631,94 @@ else
 fi
 # extract the gaia-nexus binary
 tar -xzf $bin_dir/gaia-nexus.tar.gz -C $bin_dir gaia-nexus
+tar -xzf $bin_dir/gaia-nexus.tar.gz -C $gaianet_base_dir mcp_config.toml
+# mv $bin_dir/mcp_config.toml $gaianet_base_dir/mcp_config.toml
 rm $bin_dir/gaia-nexus.tar.gz
 
 info "    👍 Done! The gaia-nexus is downloaded in $bin_dir"
 
 
-# 9. Download dashboard to $gaianet_base_dir
+
+# 9 Download MCP Servers
+printf "[+] Downloading MCP Servers ...\n"
+if [ "$(uname)" == "Darwin" ]; then
+
+    if [ "$target" = "x86_64" ]; then
+        check_curl https://github.com/apepkuss/mcp-examples/releases/download/$mcp_version/gaia-mcp-servers-apple-darwin-x86_64.tar.gz $bin_dir/gaia-mcp-servers.tar.gz
+
+    elif [ "$target" = "arm64" ]; then
+        check_curl https://github.com/apepkuss/mcp-examples/releases/download/$mcp_version/gaia-mcp-servers-apple-darwin-aarch64.tar.gz $bin_dir/gaia-mcp-servers.tar.gz
+
+    else
+        error " * Unsupported architecture: $target, only support x86_64 and arm64 on MacOS"
+        exit 1
+    fi
+
+elif [ "$(expr substr $(uname -s) 1 5)" == "Linux" ]; then
+
+    if [ "$target" = "x86_64" ]; then
+        check_curl https://github.com/apepkuss/mcp-examples/releases/download/$mcp_version/gaia-mcp-servers-unknown-linux-gnu-x86_64.tar.gz $bin_dir/gaia-mcp-servers.tar.gz
+
+    # elif [ "$target" = "aarch64" ]; then
+    #     check_curl https://github.com/apepkuss/mcp-examples/releases/download/$mcp_version/gaia-mcp-servers-unknown-linux-gnu-aarch64.tar.gz $bin_dir/gaia-mcp-servers.tar.gz
+
+    else
+        error " * Unsupported architecture: $target, only support x86_64 on Linux"
+        exit 1
+    fi
+
+else
+    error "Only support Linux, MacOS and Windows(WSL)."
+    exit 1
+fi
+# extract the gaia-mcp-servers binary
+tar -xzvf $bin_dir/gaia-mcp-servers.tar.gz -C $bin_dir
+rm $bin_dir/gaia-mcp-servers.tar.gz
+
+info "    👍 Done! The MCP Servers are downloaded in $bin_dir"
+
+
+# 10. Download kw-search-server
+printf "[+] Downloading kw-search-server ...\n"
+if [ "$(uname)" == "Darwin" ]; then
+
+    if [ "$target" = "x86_64" ]; then
+        check_curl https://github.com/LlamaEdge/kw-search-server/releases/download/$kw_search_server_version/kw-search-server-x86_64-apple-darwin.tar.gz $bin_dir/kw-search-server.tar.gz
+
+    elif [ "$target" = "arm64" ]; then
+        check_curl https://github.com/LlamaEdge/kw-search-server/releases/download/$kw_search_server_version/kw-search-server-aarch64-apple-darwin.tar.gz $bin_dir/kw-search-server.tar.gz
+
+    else
+        error " * Unsupported architecture: $target, only support x86_64 and arm64 on MacOS"
+        exit 1
+    fi
+
+elif [ "$(expr substr $(uname -s) 1 5)" == "Linux" ]; then
+
+    if [ "$target" = "x86_64" ]; then
+        check_curl https://github.com/LlamaEdge/kw-search-server/releases/download/$kw_search_server_version/kw-search-server-x86_64-unknown-linux-gnu.tar.gz $bin_dir/kw-search-server.tar.gz
+
+    # elif [ "$target" = "aarch64" ]; then
+    #     check_curl https://github.com/LlamaEdge/kw-search-server/releases/download/$kw_search_server_version/kw-search-server-aarch64-unknown-linux-gnu.tar.gz $bin_dir/kw-search-server.tar.gz
+
+    else
+        error " * Unsupported architecture: $target, only support x86_64 on Linux"
+        exit 1
+    fi
+
+else
+    error "Only support Linux, MacOS and Windows(WSL)."
+    exit 1
+fi
+# extract the gaia-mcp-servers binary
+tar -xzvf $bin_dir/kw-search-server.tar.gz -C $bin_dir kw-search-server
+rm $bin_dir/kw-search-server.tar.gz
+
+info "    👍 Done! The kw-search-server is downloaded in $bin_dir"
+
+
+
+# 11. Download dashboard to $gaianet_base_dir
 if ! command -v tar &> /dev/null; then
     echo "tar could not be found, please install it."
     exit 1
@@ -655,7 +738,7 @@ else
     warning "    ❗ Use the cached dashboard in $gaianet_base_dir"
 fi
 
-# 10. Download registry.wasm
+# 12. Download registry.wasm
 if [ ! -f "$gaianet_base_dir/registry.wasm" ] || [ "$reinstall" -eq 1 ]; then
     printf "[+] Downloading registry.wasm ...\n"
     check_curl https://github.com/GaiaNet-AI/gaianet-node/raw/main/utils/registry/registry.wasm $gaianet_base_dir/registry.wasm
@@ -664,7 +747,7 @@ else
     warning "    ❗ Use the cached registry.wasm in $gaianet_base_dir"
 fi
 
-# 11. Generate node ID
+# 13. Generate node ID
 if [ "$upgrade" -eq 1 ]; then
     printf "[+] Recovering node ID ...\n"
 
@@ -715,7 +798,7 @@ else
     info "      👍 Done!"
 fi
 
-# 12. Install gaia-frp
+# 14. Install gaia-frp
 printf "[+] Installing gaia-frp...\n"
 # Check if the directory exists, if not, create it
 if [ ! -d "$gaianet_base_dir/gaia-frp" ]; then
@@ -778,7 +861,7 @@ printf "    * Install frpc binary\n"
 cp $gaianet_base_dir/gaia-frp/frpc $gaianet_base_dir/bin/
 info "      👍 Done! frpc binary is installed in $gaianet_base_dir/bin"
 
-# 13. Download frpc.toml, generate a subdomain and print it
+# 15. Download frpc.toml, generate a subdomain and print it
 if [ "$upgrade" -eq 1 ]; then
     # recover the frpc.toml
     if [ -f "$gaianet_base_dir/backup/frpc.toml" ]; then