diff --git a/Cargo.lock b/Cargo.lock
index 35faafb..1e1db03 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1358,6 +1358,7 @@ dependencies = [
  "palette",
  "rayon",
  "rgb",
+ "thiserror",
  "tokio",
 ]
 
@@ -1852,18 +1853,18 @@ checksum = "4873307b7c257eddcb50c9bedf158eb669578359fb28428bef438fec8e6ba7c2"
 
 [[package]]
 name = "thiserror"
-version = "1.0.62"
+version = "1.0.63"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f2675633b1499176c2dff06b0856a27976a8f9d436737b4cf4f312d4d91d8bbb"
+checksum = "c0342370b38b6a11b6cc11d6a805569958d54cfa061a29969c3b5ce2ea405724"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "1.0.62"
+version = "1.0.63"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d20468752b09f49e909e55a5d338caa8bedf615594e9d80bc4c565d30faf798c"
+checksum = "a4558b58466b9ad7ca0f102865eccc95938dca1a74a856f2b57b6629050da261"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/Cargo.toml b/Cargo.toml
index 45cdc67..250ceb4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,4 +20,5 @@ num-traits = "0.2.19"
 palette = "0.7.6"
 rayon = "1.10.0"
 rgb = "0.8.40"
+thiserror = "1.0.63"
 tokio = { version = "1.38.1", features = ["full"] }
diff --git a/src/api.rs b/src/api.rs
index b61f66e..6cdfe07 100644
--- a/src/api.rs
+++ b/src/api.rs
@@ -1,7 +1,21 @@
-use axum::{Router};
+use axum::{extract::State, http::StatusCode, routing::post, Router};
+
+use crate::display::Wrapper;
+use std::sync::{Arc, Mutex};
 
 
+#[derive(Clone)]
+struct ApiContext {
+    display: Arc<Mutex<Wrapper>>,
+}
 /// API routes for axum
 /// Start with the basics: Send an image, crop it, dither, and upload.
 /// we defer the upload to a separate task.
+pub fn router() -> Router<ApiContext> {
+    Router::new()
+        .route("/setimage", post(set_image))
+}
+
+async fn set_image(State(ctx): State<ApiContext>) {
+}
 
diff --git a/src/errors.rs b/src/errors.rs
new file mode 100644
index 0000000..5aed0b5
--- /dev/null
+++ b/src/errors.rs
@@ -0,0 +1 @@
+use thiserror;
diff --git a/src/main.rs b/src/main.rs
index 79d666c..8473627 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -2,6 +2,7 @@
 pub mod display;
 pub mod imageproc;
 pub mod api;
+pub mod errors;
 
 use crate::display::Wrapper;
 use crate::imageproc::{DiffusionMatrix, Ditherer, EInkImage, ErrorDiffusionDither};
@@ -48,5 +49,8 @@ async fn main() -> anyhow::Result<()> {
         display.test()?;
     }
 
+    if matches!(cli.command, Command::Serve) {
+    }
+
     Ok(())
 }