diff --git a/src/utils/formatting.ts b/src/utils/formatting.ts
index c950c2b..5908763 100644
--- a/src/utils/formatting.ts
+++ b/src/utils/formatting.ts
@@ -30,3 +30,15 @@ export function bold(s: string): string {
 export function italic(s: string): string {
   return `_${s}_`;
 }
+
+export function code(s: string): string {
+  return '`' + String(s) + '`';
+}
+
+export function section(s: string): string {
+  return `*${String(s).toUpperCase()}*`;
+}
+
+export function bullets(items: string[]): string {
+  return (items || []).map((i) => `- ${String(i)}`).join('\n');
+}
diff --git a/tests/unit/utils/formatting.test.ts b/tests/unit/utils/formatting.test.ts
new file mode 100644
index 0000000..4c93395
--- /dev/null
+++ b/tests/unit/utils/formatting.test.ts
@@ -0,0 +1,19 @@
+import { describe, it, expect } from 'bun:test';
+import { code, section, bullets } from '../../../src/utils/formatting';
+
+describe('utils/formatting helpers', () => {
+  it('code envuelve en backticks', () => {
+    expect(code('abc')).toBe('`abc`');
+    expect(code('')).toBe('``');
+  });
+
+  it('section devuelve mayúsculas en negrita', () => {
+    expect(section('Comandos básicos')).toBe('*COMANDOS BÁSICOS*');
+    expect(section('web')).toBe('*WEB*');
+  });
+
+  it('bullets genera lista con guiones', () => {
+    expect(bullets(['uno', 'dos'])).toBe('- uno\n- dos');
+    expect(bullets([])).toBe('');
+  });
+});