diff --git a/src/Validator/Contains.php b/src/Validator/Contains.php
new file mode 100644
index 0000000..6b407b9
--- /dev/null
+++ b/src/Validator/Contains.php
@@ -0,0 +1,114 @@
+<?php
+
+namespace Utopia\Validator;
+
+use Utopia\Validator;
+
+/**
+ * Contains
+ *
+ * Validate that a string contains at least one of the predefined substrings.
+ */
+class Contains extends Validator
+{
+    /**
+     * @var array
+     */
+    protected array $patterns;
+
+    /**
+     * @var bool
+     */
+    protected bool $strict;
+
+    /**
+     * Constructor
+     *
+     * Sets a list of substrings to search for and strict mode.
+     *
+     * @param  array  $patterns
+     * @param  bool  $strict enable case-sensitive matching
+     */
+    public function __construct(array $patterns, bool $strict = false)
+    {
+        if (empty($patterns)) {
+            throw new \InvalidArgumentException('Patterns array cannot be empty');
+        }
+
+        $this->patterns = $patterns;
+        $this->strict = $strict;
+    }
+
+    /**
+     * Get Description
+     *
+     * Returns validator description
+     *
+     * @return string
+     */
+    public function getDescription(): string
+    {
+        $message = 'Value must contain one of ('.\implode(', ', $this->patterns).')';
+
+        if ($this->strict) {
+            $message .= ' (case-sensitive)';
+        } else {
+            $message .= ' (case-insensitive)';
+        }
+
+        return $message;
+    }
+
+    /**
+     * Is valid
+     *
+     * Validation will pass when $value contains at least one of the patterns.
+     *
+     * @param  mixed  $value
+     * @return bool
+     */
+    public function isValid($value): bool
+    {
+        if (!\is_string($value)) {
+            return false;
+        }
+
+        if (!$this->strict) {
+            $value = \mb_strtolower($value, 'UTF-8');
+        }
+
+        foreach ($this->patterns as $pattern) {
+            $pattern = $this->strict ? $pattern : \mb_strtolower($pattern, 'UTF-8');
+
+            if (\str_contains($value, $pattern)) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * Is array
+     *
+     * Function will return true if object is array.
+     *
+     * @return bool
+     */
+    public function isArray(): bool
+    {
+        return false;
+    }
+
+    /**
+     * Get Type
+     *
+     * Returns validator type.
+     *
+     * @return string
+     */
+    public function getType(): string
+    {
+        return self::TYPE_STRING;
+    }
+}
diff --git a/tests/Validator/ContainsTest.php b/tests/Validator/ContainsTest.php
new file mode 100644
index 0000000..749b399
--- /dev/null
+++ b/tests/Validator/ContainsTest.php
@@ -0,0 +1,129 @@
+<?php
+
+namespace Utopia\Validator;
+
+use PHPUnit\Framework\TestCase;
+use stdClass;
+
+class ContainsTest extends TestCase
+{
+    public function testCanValidateWithSinglePattern(): void
+    {
+        $validator = new Contains(['[skip ci]']);
+
+        $this->assertTrue($validator->isValid('[skip ci] update changelog'));
+        $this->assertTrue($validator->isValid('docs: update readme [skip ci]'));
+        $this->assertTrue($validator->isValid('prefix[skip ci]suffix'));
+
+        $this->assertFalse($validator->isValid('fix: real bug fix'));
+        $this->assertFalse($validator->isValid('skip deploy without brackets'));
+        $this->assertFalse($validator->isValid(''));
+    }
+
+    public function testCanValidateWithMultiplePatterns(): void
+    {
+        $validator = new Contains(['[skip ci]', '[no ci]', '[ci skip]']);
+
+        $this->assertTrue($validator->isValid('[skip ci]'));
+        $this->assertTrue($validator->isValid('[no ci]'));
+        $this->assertTrue($validator->isValid('[ci skip]'));
+        $this->assertFalse($validator->isValid('[skip deploy]'));
+    }
+
+    public function testCanValidateLoosely(): void
+    {
+        $validator = new Contains(['[skip ci]']);
+
+        $this->assertTrue($validator->isValid('[skip ci]'));
+        $this->assertTrue($validator->isValid('[SKIP CI]'));
+        $this->assertTrue($validator->isValid('[Skip Ci]'));
+        $this->assertTrue($validator->isValid('Docs update [SKIP CI]'));
+    }
+
+    public function testCanValidateStrictly(): void
+    {
+        $validator = new Contains(['[skip ci]'], true);
+
+        $this->assertTrue($validator->isValid('[skip ci]'));
+        $this->assertTrue($validator->isValid('prefix[skip ci]suffix'));
+
+        $this->assertFalse($validator->isValid('[SKIP CI]'));
+        $this->assertFalse($validator->isValid('[Skip Ci]'));
+    }
+
+    public function testCanValidateMultilineStrings(): void
+    {
+        $validator = new Contains(['[skip ci]']);
+
+        $message = "feat: add new stuff\n\nMore detail here.\n\n[skip ci]";
+        $this->assertTrue($validator->isValid($message));
+    }
+
+    public function testThrowsExceptionForEmptyPatternsArray(): void
+    {
+        $this->expectException(\InvalidArgumentException::class);
+        $this->expectExceptionMessage('Patterns array cannot be empty');
+
+        new Contains([]);
+    }
+
+    public function testCanValidateWithEmptyPatternString(): void
+    {
+        $validator = new Contains(['']);
+
+        $this->assertTrue($validator->isValid('any string'));
+        $this->assertTrue($validator->isValid(''));
+    }
+
+    public function testCanValidateWithNonStringValues(): void
+    {
+        $validator = new Contains(['[skip ci]']);
+
+        $this->assertFalse($validator->isValid(null));
+        $this->assertFalse($validator->isValid([]));
+        $this->assertFalse($validator->isValid(123));
+        $this->assertFalse($validator->isValid(12.34));
+        $this->assertFalse($validator->isValid(true));
+        $this->assertFalse($validator->isValid(false));
+        $this->assertFalse($validator->isValid(new stdClass()));
+    }
+
+    public function testCanValidatePartialMatches(): void
+    {
+        $validator = new Contains(['skip']);
+
+        $this->assertTrue($validator->isValid('skip'));
+        $this->assertTrue($validator->isValid('skip ci'));
+        $this->assertTrue($validator->isValid('please skip this'));
+        $this->assertTrue($validator->isValid('skipping'));
+
+        $this->assertFalse($validator->isValid('ski'));
+        $this->assertFalse($validator->isValid(''));
+    }
+
+    public function testCanValidateWithUnicodeCharacters(): void
+    {
+        $validator = new Contains(['café', 'naïve']);
+
+        $this->assertTrue($validator->isValid('I love café'));
+        $this->assertTrue($validator->isValid('Naïve approach'));
+        $this->assertTrue($validator->isValid('CAFÉ'));
+
+        $this->assertFalse($validator->isValid('I love coffee'));
+    }
+
+    public function testReturnsCorrectMetadata(): void
+    {
+        $validator = new Contains(['foo', 'bar']);
+
+        $this->assertFalse($validator->isArray());
+        $this->assertSame(\Utopia\Validator::TYPE_STRING, $validator->getType());
+        $this->assertStringContainsString('foo', $validator->getDescription());
+        $this->assertStringContainsString('bar', $validator->getDescription());
+        $this->assertStringContainsString('case-insensitive', $validator->getDescription());
+
+        $validatorStrict = new Contains(['foo', 'bar'], true);
+
+        $this->assertStringContainsString('case-sensitive', $validatorStrict->getDescription());
+    }
+}