diff --git a/packages/cli/test/cases/loaders-build.plugins.resource-page/greenwood.config.js b/packages/cli/test/cases/loaders-build.plugins.resource-page/greenwood.config.js
index aa5b457b2..d4d60fbc2 100644
--- a/packages/cli/test/cases/loaders-build.plugins.resource-page/greenwood.config.js
+++ b/packages/cli/test/cases/loaders-build.plugins.resource-page/greenwood.config.js
@@ -7,7 +7,7 @@ class FooResource {
     this.servePage = options.servePage;
 
     this.extensions = ['foo'];
-    this.contentType = 'text/javascript';
+    this.contentType = 'text/html';
   }
 
   async shouldServe(url) {
@@ -15,9 +15,7 @@ class FooResource {
   }
 
   async serve(url) {
-    let body = await fs.readFile(url, 'utf-8');
-
-    body = body.replace(/interface (.*){(.*)}/s, '');
+    const body = await fs.readFile(url, 'utf-8');
 
     return new Response(body, {
       headers: new Headers({
@@ -44,7 +42,7 @@ class BarResource {
   async serve(url) {
     let body = await fs.readFile(url, 'utf-8');
 
-    body = body.replace(/interface (.*){(.*)}/s, '');
+    body = body.replace(/interface (.*){(.*)}/, '');
 
     return new Response(body, {
       headers: new Headers({
diff --git a/packages/cli/test/cases/loaders-build.plugins.resource-page/loaders-build.plugins.resource-page.spec.js b/packages/cli/test/cases/loaders-build.plugins.resource-page/loaders-build.plugins.resource-page.spec.js
index 9e9beba70..01b15eab7 100644
--- a/packages/cli/test/cases/loaders-build.plugins.resource-page/loaders-build.plugins.resource-page.spec.js
+++ b/packages/cli/test/cases/loaders-build.plugins.resource-page/loaders-build.plugins.resource-page.spec.js
@@ -1,9 +1,9 @@
 /*
  * Use Case
- * Run Greenwood with a custom resource plugin and default workspace with a custom page format.
+ * Run Greenwood with a custom resource plugin and default workspace with a custom page formats.
  *
  * User Result
- * Should generate a bare bones Greenwood build with expected custom file (.foo) behavior.
+ * Should generate a bare bones Greenwood build with expected custom page format behaviors.
  *
  * User Command
  * greenwood build
@@ -32,6 +32,8 @@
  * Custom Workspace
  * src/
  *   pages/
+ *     api
+ *       greeting.bar
  *     about.foo
  *     contact.bar
  *     index.html
@@ -47,7 +49,7 @@ import { fileURLToPath, URL } from 'url';
 const expect = chai.expect;
 
 describe('Build Greenwood With: ', function() {
-  const LABEL = 'Custom FooResource Plugin and Default Workspace';
+  const LABEL = 'Custom Static and Dynamic Page Loaders';
   const cliPath = path.join(process.cwd(), 'packages/cli/src/index.js');
   const outputPath = fileURLToPath(new URL('.', import.meta.url));
   let runner;
@@ -115,7 +117,21 @@ describe('Build Greenwood With: ', function() {
       });
     });
 
-    // TODO test an API route with a dynamic format plugin
+    describe('Custom Format Dynamic API Route', function() {
+      let handler;
+
+      before(async function() {
+        handler = (await import(new URL('./public/api/greeting.js', import.meta.url))).handler;
+      });
+
+      it('should have the expected output from the API route', async function() {
+        const response = await handler(new Request(new URL('http://localhost:8080/api/greeting')));
+        const data = await response.json();
+
+        expect(data.message).to.equal('Hello World!!!');
+      });
+
+    });
   });
 
   after(function() {
diff --git a/packages/cli/test/cases/loaders-build.plugins.resource-page/src/pages/api/greeting.bar b/packages/cli/test/cases/loaders-build.plugins.resource-page/src/pages/api/greeting.bar
new file mode 100644
index 000000000..2b58205ef
--- /dev/null
+++ b/packages/cli/test/cases/loaders-build.plugins.resource-page/src/pages/api/greeting.bar
@@ -0,0 +1,13 @@
+interface User { }
+
+export async function handler(request) {
+  const params = new URLSearchParams(request.url.slice(request.url.indexOf('?')));
+  const name = params.has('name') ? params.get('name') : 'World';
+  const body = { message: `Hello ${name}!!!` };
+
+  return new Response(JSON.stringify(body), {
+    headers: new Headers({
+      'Content-Type': 'application/json'
+    })
+  });
+}
\ No newline at end of file
diff --git a/packages/cli/test/cases/loaders-build.plugins.resource-page/src/pages/contact.bar b/packages/cli/test/cases/loaders-build.plugins.resource-page/src/pages/contact.bar
index b72e04fb0..ae8d01f4c 100644
--- a/packages/cli/test/cases/loaders-build.plugins.resource-page/src/pages/contact.bar
+++ b/packages/cli/test/cases/loaders-build.plugins.resource-page/src/pages/contact.bar
@@ -1,3 +1,5 @@
+interface User { }
+
 export default class ContactPage extends HTMLElement {
   connectedCallback() {
     this.innerHTML = `