That should do

src/__tests__/url_prefix.test.ts

@@ -0,0 +1,44 @@
+import { describe, it, expect } from 'vitest';
+import { readFileSync, readdirSync, statSync } from 'fs';
+import path from 'path';
+
+function getFilesRecursively(dir: string): string[] {
+  let files: string[] = [];
+  const items = readdirSync(dir);
+  for (const item of items) {
+    const fullPath = path.join(dir, item);
+    if (statSync(fullPath).isDirectory()) {
+      if (item !== '__tests__') {
+        files = files.concat(getFilesRecursively(fullPath));
+      }
+    } else if (item.endsWith('.ts')) {
+      files.push(fullPath);
+    }
+  }
+  return files;
+}
+
+describe('API URL validation', () => {
+  it('should ensure all API client calls start with /api/', () => {
+    const tsFiles = getFilesRecursively('src');
+    const violations: string[] = [];
+
+    // Regex to match common patterns like client.get('/path') or client.post(`/path`)
+    // specifically looking for paths that start with / but NOT /api/ or /health
+    const urlPattern = /client\.(get|post|put|delete|patch)\(['"`]\/(?!(api|health)\/)[^'"`]+['"`]/g;
+
+    tsFiles.forEach(file => {
+      const content = readFileSync(file, 'utf-8');
+      let match;
+      while ((match = urlPattern.exec(content)) !== null) {
+        // Double check for exact /health match (without trailing slash)
+        if (match[0].includes("'/health'") || match[0].includes('"/health"') || match[0].includes('`/health`')) {
+          continue;
+        }
+        violations.push(`${file}: ${match[0]}`);
+      }
+    });
+
+    expect(violations, `Found API calls not starting with /api/:\n${violations.join('\n')}`).toHaveLength(0);
+  });
+});