diff --git a/cipher_discord_bot/src/app/mod.rs b/cipher_discord_bot/src/app/mod.rs
index 2d5e8be..8b77f3a 100644
--- a/cipher_discord_bot/src/app/mod.rs
+++ b/cipher_discord_bot/src/app/mod.rs
@@ -31,6 +31,8 @@ pub enum AppError<E> {
     RepositoryError(#[from] RepositoryError<E>),
     #[error("staff-only command used by non-staff user")]
     StaffOnly { command_name: String },
+    #[error("unknown cache or http error")]
+    UnknownCacheOrHttpError,
 }
 
 pub type AppContext<'a, R, E> = poise::ApplicationContext<'a, AppData<R>, AppError<E>>;
diff --git a/cipher_discord_bot/src/app/on_error.rs b/cipher_discord_bot/src/app/on_error.rs
index 18a98d9..82eb73a 100644
--- a/cipher_discord_bot/src/app/on_error.rs
+++ b/cipher_discord_bot/src/app/on_error.rs
@@ -299,6 +299,12 @@ where
                 format!("`/{}` can only be used by staff.", command_name),
                 format!("staff-only command `{}` cannot be run by non-staff users", command_name),
                 log::Level::Info,
+            ),
+            A::UnknownCacheOrHttpError => ErrorMessage::new(
+                "Unknown Cache or Http Error",
+                "Failed to get resource.",
+                "cache lookup or http request failed",
+                log::Level::Warn,
             )
         }
     }
diff --git a/cipher_discord_bot/src/commands/about.rs b/cipher_discord_bot/src/commands/about.rs
index 10e61c2..87cdc02 100644
--- a/cipher_discord_bot/src/commands/about.rs
+++ b/cipher_discord_bot/src/commands/about.rs
@@ -7,7 +7,7 @@ use crate::app::AppError;
 use crate::utils;
 
 /// Show information about the bot.
-#[poise::command(slash_command)]
+#[poise::command(slash_command, guild_only)]
 pub async fn about<R: RepositoryProvider + Send + Sync>(
     ctx: AppContext<'_, R, R::BackendError>,
     #[description = "Hide reply from other users. Defaults to True."] ephemeral: Option<bool>,
diff --git a/cipher_discord_bot/src/commands/help.rs b/cipher_discord_bot/src/commands/help.rs
index f020741..1594b57 100644
--- a/cipher_discord_bot/src/commands/help.rs
+++ b/cipher_discord_bot/src/commands/help.rs
@@ -22,7 +22,7 @@ where
 }
 
 /// Show help message.
-#[poise::command(slash_command)]
+#[poise::command(slash_command, guild_only)]
 pub async fn help<R: RepositoryProvider + Send + Sync>(
     ctx: AppContext<'_, R, R::BackendError>,
     #[rename = "command"]
diff --git a/cipher_discord_bot/src/commands/profile/codes.rs b/cipher_discord_bot/src/commands/profile/codes.rs
index d0fc485..26dc8d1 100644
--- a/cipher_discord_bot/src/commands/profile/codes.rs
+++ b/cipher_discord_bot/src/commands/profile/codes.rs
@@ -15,6 +15,7 @@ use crate::app::AppError;
 /// Manage friend codes.
 #[poise::command(
     slash_command,
+    guild_only,
     subcommands(
         "edit",
         "overwrite",
@@ -220,7 +221,7 @@ where
 }
 
 /// Edit your friend codes.
-#[poise::command(slash_command)]
+#[poise::command(slash_command, guild_only)]
 async fn edit<R: RepositoryProvider + Send + Sync>(ctx: AppContext<'_, R, R::BackendError>) -> Result<(), AppError<R::BackendError>> {
     let author_id = ctx.author().id.get();
 
@@ -249,6 +250,7 @@ async fn edit<R: RepositoryProvider + Send + Sync>(ctx: AppContext<'_, R, R::Bac
 /// Edit any user's friend codes.
 #[poise::command(
     slash_command,
+    guild_only,
     hide_in_help,
     check = "crate::checks::is_staff",
 )]
diff --git a/cipher_discord_bot/src/commands/profile/mod.rs b/cipher_discord_bot/src/commands/profile/mod.rs
index 28e07f7..c28968c 100644
--- a/cipher_discord_bot/src/commands/profile/mod.rs
+++ b/cipher_discord_bot/src/commands/profile/mod.rs
@@ -1,7 +1,6 @@
 use cipher_core::repository::user_repository::UserRepository;
 use cipher_core::repository::RepositoryProvider;
 use poise::CreateReply;
-use serenity::all::Color;
 use serenity::all::CreateEmbed;
 
 use crate::app::AppContext;
@@ -24,7 +23,7 @@ pub async fn profile<R: RepositoryProvider + Send + Sync>(
 }
 
 /// Show your profile or someone else's.
-#[poise::command(slash_command)]
+#[poise::command(slash_command, guild_only)]
 async fn show<R: RepositoryProvider + Send + Sync>(
     ctx: AppContext<'_, R, R::BackendError>,
     #[rename = "member"]
@@ -37,23 +36,7 @@ async fn show<R: RepositoryProvider + Send + Sync>(
 
     let member = match option_member {
         Some(member) => member,
-        None => match ctx.author_member().await {
-            Some(member) => member.into_owned(),
-            None => {
-                let embed = CreateEmbed::new()
-                    .title("Error")
-                    .description("This command can only be used in server.")
-                    .color(Color::RED);
-
-                let reply = CreateReply::default()
-                    .embed(embed)
-                    .ephemeral(true);
-
-                ctx.send(reply).await?;
-
-                return Ok(())
-            },
-        },
+        None => ctx.author_member().await.ok_or(AppError::UnknownCacheOrHttpError)?.into_owned(),
     };
 
     let avatar_url = crate::utils::member_avatar_url(&member);