diff --git a/aiscript-runtime/src/config/mod.rs b/aiscript-runtime/src/config/mod.rs
index fd379b8..5cd7c47 100644
--- a/aiscript-runtime/src/config/mod.rs
+++ b/aiscript-runtime/src/config/mod.rs
@@ -27,6 +27,24 @@ pub struct Config {
     pub auth: AuthConfig,
     #[serde(default)]
     pub sso: SsoConfig,
+    #[serde(default)]
+    pub network: NetworkConfig,
+}
+
+#[derive(Debug, Deserialize, Default)]
+pub struct NetworkConfig {
+    #[serde(default = "default_host")]
+    pub host: String,
+    #[serde(default = "default_port")]
+    pub port: u16,
+}
+
+fn default_host() -> String {
+    "127.0.0.1".to_string()
+}
+
+fn default_port() -> u16 {
+    8080
 }
 
 #[derive(Debug, Deserialize, Default)]
diff --git a/aiscript-runtime/src/lib.rs b/aiscript-runtime/src/lib.rs
index 0c188db..25e0e80 100644
--- a/aiscript-runtime/src/lib.rs
+++ b/aiscript-runtime/src/lib.rs
@@ -269,7 +269,11 @@ async fn run_server(
     // Add the fallback handler to the router
     router = router.fallback(handle_404);
 
-    let addr = SocketAddr::from(([0, 0, 0, 0], port));
+    let addr = format!("{}:{}", config.network.host, port)
+        .parse::<SocketAddr>()
+        .unwrap();
+    println!("Server listening on http://{}", addr);
+
     let listener = TcpListener::bind(addr).await.unwrap();
 
     match reload_rx {
diff --git a/aiscript/src/main.rs b/aiscript/src/main.rs
index 1700ee3..c8a85e9 100644
--- a/aiscript/src/main.rs
+++ b/aiscript/src/main.rs
@@ -31,8 +31,8 @@ enum Commands {
         #[arg(value_name = "FILE")]
         file: Option<PathBuf>,
         /// The web server listening port.
-        #[arg(short, long, default_value_t = 8080)]
-        port: u16,
+        #[arg(short, long)]
+        port: Option<u16>,
         /// Reload the file on change
         #[arg(short, long, default_value_t = false)]
         reload: bool,
@@ -53,7 +53,7 @@ async fn main() {
     let cli = AIScriptCli::parse();
     match cli.command {
         Some(Commands::Serve { file, port, reload }) => {
-            println!("Server listening on port http://localhost:{}", port);
+            let port = port.unwrap_or(config.network.port);
             aiscript_runtime::run(file, port, reload).await;
         }
         Some(Commands::New { name }) => {
diff --git a/examples/project.toml b/examples/project.toml
index 8b90f8d..e656afe 100644
--- a/examples/project.toml
+++ b/examples/project.toml
@@ -1,3 +1,7 @@
+[network]
+host = "0.0.0.0"
+port = 5042
+
 [apidoc]
 enabled = true
 type = "swagger"
diff --git a/examples/routes/nested/gist.ai b/examples/routes/nested/gist.ai
index f41188f..11b668d 100644
--- a/examples/routes/nested/gist.ai
+++ b/examples/routes/nested/gist.ai
@@ -3,12 +3,18 @@ get /gists {
     return "gist";
 }
 
-get /gists/<id:int> {
+get /gists/:id {
     """Get gist by id"""
-    return "gist: " + id;
+    path {
+        id: str,
+    }
+    return "gist: " + path.id;
 }
 
-delete /gists/<id:int> {
+delete /gists/:id {
     """Delete gist by id"""
-    return "delete gist: " + id;
+    path {
+        id: str,
+    }
+    return "delete gist: " + path.id;
 }
\ No newline at end of file
diff --git a/examples/routes/poc.ai b/examples/routes/poc.ai
index 64fe639..046a434 100644
--- a/examples/routes/poc.ai
+++ b/examples/routes/poc.ai
@@ -5,9 +5,9 @@ route /poc {
         query {
             """hello content"""
             @string(min_len=3, max_len=30)
-            content: str
+            content: str,
             """hello age"""
-            age: int = 18
+            age: int = 18,
         }
 
         print(query);
@@ -25,24 +25,24 @@ route /poc {
         """Post and put hello API"""
         query {
             @string(min_len=3, max_len=30)
-            content: str
+            content: str,
             """age"""
-            age: int = 18
+            age: int = 18,
             @in(["ios", "android"])
-            platform: str = "ios" 
+            platform: str = "ios",
         }
 
         @json
         body {
             """test flag"""
-            test: bool = true
+            test: bool = true,
         }
 
         ai fn ask(question) {
-            return prompt content;
+            return prompt question;
         }
 
-        let answer = ask(content);
+        let answer = ask(query.content);
         return "AI answer: " + answer;
     }
 }
\ No newline at end of file
diff --git a/examples/routes/repo.ai b/examples/routes/repo.ai
index 3e7cf29..d7a487a 100644
--- a/examples/routes/repo.ai
+++ b/examples/routes/repo.ai
@@ -20,8 +20,11 @@ post /repo {
     return "create repo: " + name;
 }
 
-put /repo/<id:int> {
+put /repo/:id {
     """Update a repository API"""
+    path {
+        id: str
+    }
     body {
         """The repository name"""
         @string(min_len=3, max_len=30)