diff --git a/src/validator.py b/src/validator.py
new file mode 100644
index 0000000..8ad40e9
--- /dev/null
+++ b/src/validator.py
@@ -0,0 +1,23 @@
+import re
+from typing import Tuple, Optional
+
+
+def validate_space_url(url: str) -> Tuple[bool, Optional[str], Optional[str]]:
+    """
+    Validates X Space URL format.
+
+    Args:
+        url: The URL to validate
+
+    Returns:
+        Tuple of (is_valid, space_id, error_message)
+    """
+    # Pattern for X Space URLs
+    pattern = r"https://x\.com/i/spaces/([a-zA-Z0-9]+)"
+    match = re.match(pattern, url)
+
+    if not match:
+        return False, None, "Invalid URL format. Expected: https://x.com/i/spaces/{SPACE_ID}"
+
+    space_id = match.group(1)
+    return True, space_id, None
diff --git a/tests/__init__.py b/tests/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/tests/test_validator.py b/tests/test_validator.py
new file mode 100644
index 0000000..75dfd67
--- /dev/null
+++ b/tests/test_validator.py
@@ -0,0 +1,12 @@
+import pytest
+from src.validator import validate_space_url
+
+
+def test_validate_space_url_valid():
+    """Test that valid X Space URL is accepted."""
+    url = "https://x.com/i/spaces/1ZkKzZWnVRRKv"
+    is_valid, space_id, error = validate_space_url(url)
+
+    assert is_valid is True
+    assert space_id == "1ZkKzZWnVRRKv"
+    assert error is None