diff --git a/src/cli.rs b/src/cli.rs
index f5875db..93671a8 100644
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -1,7 +1,7 @@
 //! The CLI for `st`.
 
 use crate::{
-    config::{StConfig, DEFAULT_CONFIG_PRETTY},
+    config::{prompt_for_configuration, StConfig},
     ctx::StContext,
     errors::{StError, StResult},
     subcommands::Subcommands,
@@ -35,32 +35,19 @@ impl Cli {
         let repo = crate::git::active_repository().ok_or(StError::NotAGitRepository)?;
         let config = Self::load_cfg_or_initialize()?;
         let context = Self::load_ctx_or_initialize(config, &repo)?;
-
         self.subcommand.run(context).await
     }
 
-    /// Loads the [StConfig]. If the config does not exist, prompts the user to set up the
-    /// `st` for the first time.
+    /// Loads the [StConfig]. If the config does not exist or is the default config, prompts
+    /// the user to set up the `st` for the first time.
     ///
     /// ## Returns
     /// - `Result<StConfig>` - The global `st` config.
     pub(crate) fn load_cfg_or_initialize() -> StResult<StConfig> {
         // Load the global configuration for `st`, or initialize it if it doesn't exist.
         match StConfig::try_load()? {
-            Some(config) => Ok(config),
-            None => {
-                let setup_message = format!(
-                    "No global configuration found for `{}`. Set up the environment.",
-                    Blue.paint("st")
-                );
-
-                // Print the default config.
-                let ser_cfg = inquire::Editor::new(&setup_message)
-                    .with_file_extension(".toml")
-                    .with_predefined_text(DEFAULT_CONFIG_PRETTY)
-                    .prompt()?;
-                Ok(toml::from_str(&ser_cfg)?)
-            }
+            Some(config) if config.validate().is_ok() => Ok(config),
+            _ => prompt_for_configuration(None),
         }
     }
 
diff --git a/src/config.rs b/src/config.rs
index 941e6cd..de4ea45 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -1,6 +1,7 @@
 //! Contains the global configuration for `st`.
 
-use crate::constants::ST_CFG_FILE_NAME;
+use crate::{constants::ST_CFG_FILE_NAME, errors::StResult};
+use nu_ansi_term::Color;
 use serde::{Deserialize, Serialize};
 use std::{fs, io, path::PathBuf};
 use thiserror::Error;
@@ -36,6 +37,14 @@ impl StConfig {
             Err(_) => Ok(None),
         }
     }
+
+    /// Validates the configuration.
+    pub fn validate(&self) -> Result<(), StConfigError> {
+        if self.github_token.is_empty() {
+            return Err(StConfigError::MissingField("github_token".to_string()));
+        }
+        Ok(())
+    }
 }
 
 impl Drop for StConfig {
@@ -51,6 +60,35 @@ pub enum StConfigError {
     /// Failed to load the configuration file.
     #[error("Failed to load the configuration file: {}", .0)]
     FailedToLoad(io::Error),
+    /// Missing a reqired field.
+    #[error("Missing required field: {}", .0)]
+    MissingField(String),
+}
+
+/// Prompts the user to set up the global configuration for `st`.
+///
+/// ## Returns
+/// - `Result<StConfig>` - The newly created global `st` config.
+pub fn prompt_for_configuration(existing_config: Option<&str>) -> StResult<StConfig> {
+    let setup_text = format!(
+        "{} configuration found for `{}`. Set up the environment.",
+        existing_config.map(|_| "Existing").unwrap_or("No"),
+        Color::Blue.paint("st")
+    );
+
+    // Use the provided predefined text or fall back to the default.
+    let default_text = existing_config.unwrap_or(DEFAULT_CONFIG_PRETTY);
+
+    // Print the default config.
+    let ser_cfg = inquire::Editor::new(&setup_text)
+        .with_file_extension(".toml")
+        .with_predefined_text(default_text)
+        .prompt()?;
+
+    let config: StConfig = toml::from_str(&ser_cfg)?;
+    config.validate()?;
+
+    Ok(config)
 }
 
 #[cfg(test)]
diff --git a/src/errors.rs b/src/errors.rs
index 6162446..716b134 100644
--- a/src/errors.rs
+++ b/src/errors.rs
@@ -83,6 +83,9 @@ pub enum StError {
     /// A [std::fmt::Write] error occurred.
     #[error("🖋️ write error: {}", .0)]
     WriteError(#[from] std::fmt::Error),
+    /// A [toml::ser::Error] occurred.
+    #[error("🍅 toml serialization error: {}", .0)]
+    TomlSerializationError(#[from] toml::ser::Error),
     /// A [toml::de::Error] occurred.
     #[error("🍅 toml decoding error: {}", .0)]
     TomlDecodingError(#[from] toml::de::Error),
diff --git a/src/subcommands/local/config.rs b/src/subcommands/local/config.rs
new file mode 100644
index 0000000..711990f
--- /dev/null
+++ b/src/subcommands/local/config.rs
@@ -0,0 +1,17 @@
+//! `config` subcommand.
+
+use crate::{config::prompt_for_configuration, ctx::StContext, errors::StResult};
+
+#[derive(Debug, Clone, Eq, PartialEq, clap::Args)]
+pub struct ConfigCmd;
+
+impl ConfigCmd {
+    /// Run the `config` subcommand to force or allow configuration editing.
+    pub fn run(self, mut ctx: StContext<'_>) -> StResult<()> {
+        let ser = toml::to_string_pretty(&ctx.cfg)?;
+        let cfg = prompt_for_configuration(Some(&ser))?;
+        ctx.cfg = cfg;
+
+        Ok(())
+    }
+}
diff --git a/src/subcommands/local/mod.rs b/src/subcommands/local/mod.rs
index 342f995..b83cedc 100644
--- a/src/subcommands/local/mod.rs
+++ b/src/subcommands/local/mod.rs
@@ -20,3 +20,6 @@ pub use track::TrackCmd;
 
 mod untrack;
 pub use untrack::UntrackCmd;
+
+mod config;
+pub use config::ConfigCmd;
diff --git a/src/subcommands/mod.rs b/src/subcommands/mod.rs
index 4f5388a..2a6e8dd 100644
--- a/src/subcommands/mod.rs
+++ b/src/subcommands/mod.rs
@@ -4,7 +4,9 @@ use crate::{ctx::StContext, errors::StResult};
 use clap::Subcommand;
 
 mod local;
-use local::{CheckoutCmd, CreateCmd, DeleteCmd, LogCmd, RestackCmd, TrackCmd, UntrackCmd};
+use local::{
+    CheckoutCmd, ConfigCmd, CreateCmd, DeleteCmd, LogCmd, RestackCmd, TrackCmd, UntrackCmd,
+};
 
 mod remote;
 use remote::{StatusCmd, SubmitCmd, SyncCmd};
@@ -41,6 +43,9 @@ pub enum Subcommands {
     /// Untrack the passed branch.
     #[clap(visible_alias = "ut")]
     Untrack(UntrackCmd),
+    /// Configure the st application.
+    #[clap(visible_alias = "cfg")]
+    Config(ConfigCmd),
 }
 
 impl Subcommands {
@@ -59,6 +64,7 @@ impl Subcommands {
             Self::Log(args) => args.run(ctx),
             Self::Track(args) => args.run(ctx),
             Self::Untrack(args) => args.run(ctx),
+            Self::Config(args) => args.run(ctx),
         }
     }
 }