diff --git a/packages/backend/src/index.ts b/packages/backend/src/index.ts
index 99c2a13..05d5d60 100644
--- a/packages/backend/src/index.ts
+++ b/packages/backend/src/index.ts
@@ -9,6 +9,7 @@ import workspaceRouter from "./routes/workspace.js";
 import dockerRouter from "./routes/docker.js";
 import editorRouter from "./routes/editor.js";
 import terminalRouter from "./routes/terminal.js";
+import buildRouter from "./routes/build.js";
 import { attachWebSocket, createTerminalSession } from "./services/terminal.service.js";
 import { attachLspWebSocket } from "./services/lsp.service.js";
 
@@ -33,6 +34,7 @@ app.use("/api/workspace", workspaceRouter);
 app.use("/api/docker", dockerRouter);
 app.use("/api/editor", editorRouter);
 app.use("/api/terminal", terminalRouter);
+app.use("/api/build", buildRouter);
 
 const frontendDist = path.resolve(__dirname, "../../frontend/dist");
 app.use(express.static(frontendDist));
diff --git a/packages/backend/src/routes/build.ts b/packages/backend/src/routes/build.ts
new file mode 100644
index 0000000..7d26b28
--- /dev/null
+++ b/packages/backend/src/routes/build.ts
@@ -0,0 +1,26 @@
+import { Router } from "express";
+import { buildModule } from "../services/build.service.js";
+
+const router = Router();
+
+router.post("/module/compile", async (req, res) => {
+  const target = req.body.target || "bare";
+  try {
+    const result = await buildModule(target, "compile");
+    res.json(result);
+  } catch (err: any) {
+    res.status(500).json({ error: err.message });
+  }
+});
+
+router.post("/module/pack", async (req, res) => {
+  const target = req.body.target || "bare";
+  try {
+    const result = await buildModule(target, "pack");
+    res.json(result);
+  } catch (err: any) {
+    res.status(500).json({ error: err.message });
+  }
+});
+
+export default router;
diff --git a/packages/backend/src/services/build.service.ts b/packages/backend/src/services/build.service.ts
new file mode 100644
index 0000000..27e442c
--- /dev/null
+++ b/packages/backend/src/services/build.service.ts
@@ -0,0 +1,43 @@
+import { runEphemeralContainer } from "./docker.service.js";
+import {
+  getWorkspacePath,
+  getServerPath,
+} from "./workspace.service.js";
+import { broadcast } from "./ws.service.js";
+
+export async function buildModule(
+  target: string = "bare",
+  mode: "compile" | "pack" = "compile",
+): Promise<{ success: boolean; output: string }> {
+  const workspacePath = getWorkspacePath();
+  const cmd =
+    mode === "compile"
+      ? ["nasher", "compile", target, "--yes"]
+      : ["nasher", "pack", target, "--yes"];
+
+  broadcast("build", "start", { type: "module", target, mode });
+
+  const result = await runEphemeralContainer({
+    image: "layonara-builder",
+    cmd,
+    binds: [
+      `${workspacePath}/repos/nwn-module:/build/nwn-module`,
+      `${workspacePath}/server/modules:/output/modules`,
+    ],
+    workingDir: "/build/nwn-module",
+  });
+
+  const success = result.statusCode === 0;
+  broadcast("build", success ? "complete" : "failed", {
+    type: "module",
+    target,
+    mode,
+    exitCode: result.statusCode,
+  });
+
+  if (success && mode === "pack") {
+    broadcast("build", "info", { message: "Module packed successfully" });
+  }
+
+  return { success, output: result.output };
+}