diff --git a/scripts/count-ethereum-core/src/main.rs b/scripts/count-ethereum-core/src/main.rs
index 30b851d..6162966 100644
--- a/scripts/count-ethereum-core/src/main.rs
+++ b/scripts/count-ethereum-core/src/main.rs
@@ -72,9 +72,9 @@ async fn main() {
     dotenv::dotenv().unwrap();
 
     let client = Arc::new(SxTClient::new(
-        env::var("PROVER_ROOT_URL").unwrap_or("api.spaceandtime.dev".to_string()),
-        env::var("AUTH_ROOT_URL").unwrap_or("api.spaceandtime.dev".to_string()),
-        env::var("SUBSTRATE_NODE_URL").unwrap_or("foo.bar.spaceandtime.dev".to_string()),
+        env::var("PROVER_ROOT_URL").unwrap_or("https://api.spaceandtime.dev".to_string()),
+        env::var("AUTH_ROOT_URL").unwrap_or("https://proxy.api.spaceandtime.dev".to_string()),
+        env::var("SUBSTRATE_NODE_URL").unwrap_or("https://rpc.testnet.sxt.network".to_string()),
         env::var("SXT_API_KEY").expect("SXT_API_KEY is required"),
         env::var("VERIFIER_SETUP").unwrap_or("verifier_setup.bin".to_string()),
     ));
diff --git a/sdk/src/args.rs b/sdk/src/args.rs
index f8da3aa..be02423 100644
--- a/sdk/src/args.rs
+++ b/sdk/src/args.rs
@@ -20,19 +20,19 @@ pub struct SdkArgs {
     #[arg(
         long,
         value_name = "PROVER_ROOT_URL",
-        default_value = "api.spaceandtime.dev",
+        default_value = "https://api.spaceandtime.dev",
         env = "PROVER_ROOT_URL"
     )]
     pub prover_root_url: String,
 
     /// Root URL for the Auth service
     ///
-    /// Used for authentication requests. Generally the same as the Prover Root URL.
+    /// Used for authentication requests.
     /// Can be set via AUTH_ROOT_URL environment variable.
     #[arg(
         long,
         value_name = "AUTH_ROOT_URL",
-        default_value = "api.spaceandtime.dev",
+        default_value = "https://proxy.api.spaceandtime.dev",
         env = "AUTH_ROOT_URL"
     )]
     pub auth_root_url: String,
@@ -44,7 +44,7 @@ pub struct SdkArgs {
     #[arg(
         long,
         value_name = "SUBSTRATE_NODE_URL",
-        default_value = "foo.bar.spaceandtime.dev",
+        default_value = "https://rpc.testnet.sxt.network",
         env = "SUBSTRATE_NODE_URL"
     )]
     pub substrate_node_url: String,
diff --git a/sdk/src/auth.rs b/sdk/src/auth.rs
index 5421968..bfc8dd5 100644
--- a/sdk/src/auth.rs
+++ b/sdk/src/auth.rs
@@ -9,7 +9,7 @@ pub async fn get_access_token(
     url: &str,
 ) -> Result<String, Box<dyn core::error::Error>> {
     let client = Client::new();
-    let auth_url = format!("https://proxy.{}/auth/apikey", url);
+    let auth_url = format!("{}/auth/apikey", url);
     let response = client
         .post(auth_url)
         .header("apikey", apikey)
diff --git a/sdk/src/client.rs b/sdk/src/client.rs
index c93920e..8415fd8 100644
--- a/sdk/src/client.rs
+++ b/sdk/src/client.rs
@@ -18,28 +18,21 @@ mod prover {
 #[derive(Debug, Clone)]
 pub struct SxTClient {
     /// Root URL for the Prover service
-    ///
-    /// This URL is used for interacting with the prover service.
     pub prover_root_url: String,
 
     /// Root URL for the Auth service
-    ///
-    /// Used for authentication requests. Generally the same as the Prover Root URL.
     pub auth_root_url: String,
 
     /// URL for the Substrate node service
-    ///
-    /// Specifies the Substrate node endpoint used for accessing commitment data.
     pub substrate_node_url: String,
 
     /// API Key for Space and Time (SxT) services
     ///
-    /// The API key required for authorization with Space and Time services.
+    /// Please visit [Space and Time Studio](https://app.spaceandtime.ai/) to obtain an API key
+    /// if you do not have one.
     pub sxt_api_key: String,
 
     /// Path to the verifier setup binary file
-    ///
-    /// Specifies the path to the `verifier_setup.bin` file required for verification.
     pub verifier_setup: String,
 }
 
@@ -101,7 +94,7 @@ impl SxTClient {
         let client = Client::new();
         let access_token = get_access_token(&self.sxt_api_key, &self.auth_root_url).await?;
         let response = client
-            .post(format!("https://{}/v1/prove", &self.prover_root_url))
+            .post(format!("{}/v1/prove", &self.prover_root_url))
             .bearer_auth(&access_token)
             .json(&prover_query)
             .send()