diff --git a/README.md b/README.md
new file mode 100644
index 0000000..d6b0a89
--- /dev/null
+++ b/README.md
@@ -0,0 +1,26 @@
+# Northbound Train
+
+Translate Cohost users and posts into ActivityPub actors and activities.
+
+> Till we feel the far track humming,
+> and we see her headlight plain,
+> and we gather and wait her coming --
+> the wonderful north-bound train.
+>
+> - *Bridge-Guard in the Karroo*, Rudyard Kipling
+
+## What it currently does
+
+Right now northbound-train just proxies Webfinger requests to Cohost project lookups using the v1 API.
+
+Place it at `.well-known/webfinger` and set your domain name with `--domain`.
+
+If you must, you can configure the base URL with `--base-url`.
+
+## Todo
+
+- [x] Webfinger for Cohost users
+    - [ ] Handle redirects if they exist (?)
+- [ ] Expose ActivityPub actors for Cohost users
+- [ ] Permit following ActivityPub actors for Cohost users
+- [ ] Deliver posts from Cohost users to ActivityPub followers
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
index 71dd35e..4d43a6a 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -28,7 +28,7 @@ static ARGS: once_cell::sync::Lazy<Args> = once_cell::sync::Lazy::new(|| {
     Args::parse()
 });
 
-#[get("/.well-known/webfinger?<params..>")]
+#[get("/?<params..>")]
 async fn webfinger_route(params: HashMap<String, String>) -> Option<Json<CohostWebfingerResource>> {
     if params.len() != 1 {
         eprintln!("Too may or too few parameters. Expected 1, got {}", params.len());
@@ -62,7 +62,7 @@ async fn main() -> Result<(), Box<dyn Error>> {
     // Set up the global config
     once_cell::sync::Lazy::force(&ARGS);
     let _rocket = rocket::build()
-    .mount("/", routes![webfinger_route])
+    .mount(&ARGS.base_url, routes![webfinger_route])
     .ignite().await?.launch().await?;
     Ok(())
 }