diff --git a/Cargo.lock b/Cargo.lock
index 362bb9c..5304f94 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -103,6 +103,7 @@ checksum = "f8175979259124331c1d7bf6586ee7e0da434155e4b2d48ec2c8386281d8df39"
 dependencies = [
  "async-trait",
  "axum-core",
+ "axum-macros",
  "bitflags 1.3.2",
  "bytes",
  "futures-util",
@@ -144,6 +145,18 @@ dependencies = [
  "tower-service",
 ]
 
+[[package]]
+name = "axum-macros"
+version = "0.3.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cdca6a10ecad987bda04e95606ef85a5417dcaac1a78455242d72e031e2b6b62"
+dependencies = [
+ "heck",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.29",
+]
+
 [[package]]
 name = "backtrace"
 version = "0.3.69"
@@ -251,6 +264,8 @@ dependencies = [
  "axum",
  "clap",
  "dotenv",
+ "serde",
+ "serde_json",
  "tokio",
  "tracing",
  "tracing-subscriber",
diff --git a/Cargo.toml b/Cargo.toml
index 8b489aa..5c72ced 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,7 +13,9 @@ tracing = { version = "0.1", features = ["log"] }
 tracing-subscriber = { version = "0.3.17" }
 clap = { version = "4.3.4", features = ["derive", "env"] }
 dotenv = { version = "0.15.0" }
-axum = { version = "0.6.18" }
+axum = { version = "0.6.18", features = ["macros"] }
 async-trait = "*"
+serde = {version = "1", features = ["derive"]}
+serde_json = "1"
 
 reqwest = {version = "0.11.20", features = ["json"]}
diff --git a/crates/churn-server/Cargo.toml b/crates/churn-server/Cargo.toml
index 47afd6a..22e7753 100644
--- a/crates/churn-server/Cargo.toml
+++ b/crates/churn-server/Cargo.toml
@@ -12,4 +12,6 @@ tracing.workspace = true
 tracing-subscriber.workspace = true
 clap.workspace = true
 dotenv.workspace = true
-axum.workspace = true
\ No newline at end of file
+axum.workspace = true
+serde.workspace = true
+serde_json.workspace = true
\ No newline at end of file
diff --git a/crates/churn-server/src/main.rs b/crates/churn-server/src/main.rs
index b95bf55..0de245e 100644
--- a/crates/churn-server/src/main.rs
+++ b/crates/churn-server/src/main.rs
@@ -2,10 +2,15 @@ use std::collections::HashMap;
 use std::net::SocketAddr;
 use std::sync::Arc;
 
-use axum::response::IntoResponse;
+use anyhow::Error;
+use axum::extract::State;
+use axum::http::StatusCode;
+use axum::response::{IntoResponse, Response};
 use axum::routing::{get, post};
-use axum::{async_trait, Router};
+use axum::{async_trait, Json, Router};
 use clap::{Parser, Subcommand};
+use serde::{Deserialize, Serialize};
+use serde_json::json;
 use tokio::sync::Mutex;
 
 #[derive(Parser)]
@@ -23,8 +28,17 @@ enum Commands {
     },
 }
 
+#[derive(Clone)]
 struct AgentService(Arc<dyn AgentServiceTrait + Send + Sync + 'static>);
 
+impl std::ops::Deref for AgentService {
+    type Target = Arc<dyn AgentServiceTrait + Send + Sync + 'static>;
+
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
 impl Default for AgentService {
     fn default() -> Self {
         Self(Arc::new(DefaultAgentService::default()))
@@ -43,23 +57,40 @@ impl Default for DefaultAgentService {
     }
 }
 
-#[async_trait]
-impl AgentServiceTrait for DefaultAgentService {
-    async fn enroll(&self, agent: Agent) -> anyhow::Result<String> {
-        todo!()
-    }
-}
-
 #[async_trait]
 trait AgentServiceTrait {
     async fn enroll(&self, agent: Agent) -> anyhow::Result<String>;
 }
 
+#[async_trait]
+impl AgentServiceTrait for DefaultAgentService {
+    async fn enroll(&self, agent: Agent) -> anyhow::Result<String> {
+        let mut agents = self.agents.lock().await;
+
+        match agents.insert(agent.name.clone(), agent.clone()) {
+            Some(_) => {
+                tracing::debug!("agents store already contained agent, replaced existing");
+
+                Ok(agent.name)
+            }
+            None => {
+                tracing::debug!("agents store didn't contain agent, inserted");
+
+                Ok(agent.name)
+            }
+        }
+    }
+}
+
+#[derive(Clone, Debug, Deserialize, Serialize)]
 struct Agent {
     pub name: String,
 }
 
-struct AppState {}
+#[derive(Clone)]
+struct AppState {
+    agent: AgentService,
+}
 
 #[tokio::main]
 async fn main() -> anyhow::Result<()> {
@@ -81,7 +112,9 @@ async fn main() -> anyhow::Result<()> {
                         .route("/ping", post(agent_ping))
                         .route("/events", post(get_tasks)),
                 )
-                .with_state();
+                .with_state(AppState {
+                    agent: AgentService::default(),
+                });
 
             tracing::info!("churn server listening on {}", host);
             axum::Server::bind(&host)
@@ -95,8 +128,42 @@ async fn main() -> anyhow::Result<()> {
     Ok(())
 }
 
-async fn enroll() -> impl IntoResponse {
-    todo!()
+enum AppError {
+    Internal(Error),
+}
+
+impl IntoResponse for AppError {
+    fn into_response(self) -> Response {
+        let (status, error_message) = match self {
+            AppError::Internal(e) => {
+                tracing::error!("failed with error: {}", e);
+
+                (
+                    StatusCode::INTERNAL_SERVER_ERROR,
+                    "failed with internal error",
+                )
+            }
+        };
+
+        let body = Json(json!({
+            "error": error_message,
+        }));
+
+        (status, body).into_response()
+    }
+}
+
+async fn enroll(
+    State(state): State<AppState>,
+    Json(agent): Json<Agent>,
+) -> Result<Json<Agent>, AppError> {
+    let _ = state
+        .agent
+        .enroll(agent.clone())
+        .await
+        .map_err(|e| AppError::Internal(e));
+
+    Ok(Json(agent))
 }
 
 async fn agent_ping() -> impl IntoResponse {
diff --git a/crates/churning/src/main.rs b/crates/churning/src/main.rs
index 2c824f9..6e7ea91 100644
--- a/crates/churning/src/main.rs
+++ b/crates/churning/src/main.rs
@@ -59,7 +59,7 @@ async fn build_container(
                     .iter()
                     .map(|s| s.to_string())
                     .collect::<Vec<_>>(),
-                architecture: dagger_rust::build::BuildArchitecture::Arm64,
+                architecture: dagger_rust::build::BuildArchitecture::Amd64,
             }],
             &bin_name,
         )