diff --git a/package.json b/package.json
index 894711f..87056b9 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
     "suggest:format": "echo \"\nTo resolve this, run: $(tput bold)npm run format$(tput sgr0)\" && exit 1",
     "test:format": "prettier --check . || npm run suggest:format",
     "test:spelling": "cspell \"spec/**/*.md\" README.md LICENSE.md",
-    "test:structure": "find . -type d -name 'GAP-*' -exec ./scripts/validate-structure.js {} \\;"
+    "test:structure": "./scripts/validate-structure.js"
   },
   "devDependencies": {
     "ajv": "^8.17.1",
diff --git a/scripts/validate-structure.js b/scripts/validate-structure.js
index e1a88b6..ee2ecd3 100755
--- a/scripts/validate-structure.js
+++ b/scripts/validate-structure.js
@@ -1,15 +1,15 @@
 #!/usr/bin/env node
 
 /**
- * Validates the structure of a GAP directory.
+ * Validates the structure of GAP directories.
  *
- * Usage: ./scripts/validate-structure.js <gap-directory>
+ * Usage: ./scripts/validate-structure.js [gap-directory]
  *
- * Can be xarg'd over all GAP directories:
- *   find . -maxdepth 1 -type d -name 'GAP-*' | xargs -I{} node scripts/validate-structure.js {}
+ * If no directory is provided, automatically discovers and validates all GAP-* directories
+ * in the repository root.
  */
 
-import { existsSync, readFileSync, statSync } from "node:fs";
+import { existsSync, readFileSync, statSync, readdirSync } from "node:fs";
 import { basename, join, dirname } from "node:path";
 import { fileURLToPath } from "node:url";
 import { parseArgs } from "node:util";
@@ -122,16 +122,16 @@ function validateMetadata(dirPath, gapName) {
   }
 }
 
-function main() {
-  const { positionals } = parseArgs({ allowPositionals: true, strict: true });
-
-  if (positionals.length !== 1) {
-    console.error("Usage: ./scripts/validate-structure.js <gap-directory>");
-    process.exit(1);
-  }
+function discoverGapDirectories() {
+  const rootDir = join(__dirname, "..");
+  const entries = readdirSync(rootDir, { withFileTypes: true });
 
-  const dirPath = positionals[0];
+  return entries
+    .filter((entry) => entry.isDirectory() && /^GAP-/.test(entry.name))
+    .map((entry) => join(rootDir, entry.name));
+}
 
+function validateGapDirectory(dirPath) {
   if (!existsSync(dirPath)) {
     console.error(`Directory does not exist: ${dirPath}`);
     process.exit(1);
@@ -150,6 +150,35 @@ function main() {
 
   // Validate metadata.yml
   validateMetadata(dirPath, gapName);
+
+  console.log(`✓ ${gapName} validated successfully`);
+}
+
+function main() {
+  const { positionals } = parseArgs({ allowPositionals: true, strict: true });
+
+  if (positionals.length === 0) {
+    // No arguments provided - discover and validate all GAP directories
+    const gapDirs = discoverGapDirectories();
+
+    if (gapDirs.length === 0) {
+      console.error("No GAP directories found");
+      process.exit(1);
+    }
+
+    console.log(`Found ${gapDirs.length} GAP director${gapDirs.length === 1 ? "y" : "ies"}`);
+
+    for (const dir of gapDirs) {
+      validateGapDirectory(dir);
+    }
+  } else if (positionals.length === 1) {
+    // Single directory provided - validate it
+    const dirPath = positionals[0];
+    validateGapDirectory(dirPath);
+  } else {
+    console.error("Usage: ./scripts/validate-structure.js [gap-directory]");
+    process.exit(1);
+  }
 }
 
 main();