diff --git a/bin/main.rs b/bin/main.rs
index df10a26a..82df7669 100644
--- a/bin/main.rs
+++ b/bin/main.rs
@@ -3,19 +3,27 @@ mod terminal;
 
 use std::ffi::OsString;
 use std::io;
+use std::io::Write;
 use std::{iter, process};
 
 use anyhow::anyhow;
 
-use radicle::version;
+use radicle::version::Version;
 use radicle_term as term;
 
 use commands::*;
 
 pub const NAME: &str = "rad-tui";
-pub const VERSION: &str = env!("CARGO_PKG_VERSION");
 pub const DESCRIPTION: &str = "Radicle terminal interfaces";
+pub const PKG_VERSION: &str = env!("CARGO_PKG_VERSION");
 pub const GIT_HEAD: &str = env!("GIT_HEAD");
+pub const TIMESTAMP: &str = env!("GIT_COMMIT_TIME");
+pub const VERSION: Version = Version {
+    name: NAME,
+    version: PKG_VERSION,
+    commit: GIT_HEAD,
+    timestamp: TIMESTAMP,
+};
 
 #[derive(Debug)]
 enum Command {
@@ -65,18 +73,21 @@ fn parse_args() -> anyhow::Result<Command> {
 }
 
 fn print_help() -> anyhow::Result<()> {
-    version::print(&mut io::stdout(), NAME, VERSION, GIT_HEAD)?;
+    VERSION.write(&mut io::stdout())?;
     println!("{DESCRIPTION}");
     println!();
 
-    tui_help::run(Default::default(), terminal::profile)
+    tui_help::run(Default::default(), terminal::DefaultContext)
 }
 
 fn run(command: Command) -> Result<(), Option<anyhow::Error>> {
     match command {
         Command::Version => {
-            version::print(&mut io::stdout(), NAME, VERSION, GIT_HEAD)
+            let mut stdout = io::stdout();
+            VERSION
+                .write_json(&mut stdout)
                 .map_err(|e| Some(e.into()))?;
+            writeln!(&mut stdout).ok();
         }
         Command::Help => {
             print_help()?;
diff --git a/bin/terminal.rs b/bin/terminal.rs
index 9b0b438b..b728e005 100644
--- a/bin/terminal.rs
+++ b/bin/terminal.rs
@@ -8,26 +8,44 @@ pub use args::{Args, Error, Help};
 
 use radicle_term as term;
 
-use radicle::profile::Profile;
+use radicle::profile::{Home, Profile};
 
 /// Context passed to all commands.
 pub trait Context {
     /// Return the currently active profile, or an error if no profile is active.
     fn profile(&self) -> Result<Profile, anyhow::Error>;
+    /// Return the Radicle home.
+    fn home(&self) -> Result<Home, std::io::Error>;
 }
 
 impl Context for Profile {
     fn profile(&self) -> Result<Profile, anyhow::Error> {
         Ok(self.clone())
     }
+
+    fn home(&self) -> Result<Home, std::io::Error> {
+        Ok(self.home.clone())
+    }
 }
 
-impl<F> Context for F
-where
-    F: Fn() -> Result<Profile, anyhow::Error>,
-{
+pub struct DefaultContext;
+
+impl Context for DefaultContext {
+    fn home(&self) -> Result<Home, std::io::Error> {
+        radicle::profile::home()
+    }
+
     fn profile(&self) -> Result<Profile, anyhow::Error> {
-        self()
+        match Profile::load() {
+            Ok(profile) => Ok(profile),
+            Err(radicle::profile::Error::NotFound(path)) => Err(args::Error::WithHint {
+                err: anyhow::anyhow!("Radicle profile not found in '{}'.", path.display()),
+                hint: "To setup your radicle profile, run `rad auth`.",
+            }
+            .into()),
+            Err(radicle::profile::Error::Config(e)) => Err(e.into()),
+            Err(e) => Err(anyhow::anyhow!("Could not load radicle profile: {e}")),
+        }
     }
 }
 
@@ -49,7 +67,7 @@ where
 pub fn run_command_args<A, C>(help: Help, cmd: C, args: Vec<OsString>) -> !
 where
     A: Args,
-    C: Command<A, fn() -> anyhow::Result<Profile>>,
+    C: Command<A, DefaultContext>,
 {
     let options = match A::from_args(args) {
         Ok((opts, unparsed)) => {
@@ -88,7 +106,7 @@ where
         }
     };
 
-    match cmd.run(options, self::profile) {
+    match cmd.run(options, DefaultContext) {
         Ok(()) => process::exit(0),
         Err(err) => {
             fail(help.name, &err);
diff --git a/build.rs b/build.rs
index ddda179f..7b84b510 100644
--- a/build.rs
+++ b/build.rs
@@ -18,6 +18,23 @@ fn main() {
         })
         .unwrap_or_else(|| String::from("unknown"));
 
+    // Set a build-time `GIT_COMMIT_TIME` env var which includes the commit time.
+    let commit_time = Command::new("git")
+        .arg("show")
+        .arg("--format=%ct")
+        .arg("HEAD")
+        .output()
+        .ok()
+        .and_then(|output| {
+            if output.status.success() {
+                String::from_utf8(output.stdout).ok()
+            } else {
+                None
+            }
+        })
+        .unwrap_or(0.to_string());
+
+    println!("cargo:rustc-env=GIT_COMMIT_TIME={commit_time}");
     println!("cargo:rustc-env=GIT_HEAD={hash}");
     println!("cargo:rustc-rerun-if-changed=.git/HEAD");
 }