diff --git a/codechunk/core/chunking.py b/codechunk/core/chunking.py
new file mode 100644
index 0000000..c57e4f1
--- /dev/null
+++ b/codechunk/core/chunking.py
@@ -0,0 +1,177 @@
+from dataclasses import dataclass, field
+from typing import List, Optional, Dict, Any
+from pathlib import Path
+import re
+
+
+@dataclass
+class ChunkMetadata:
+    file_path: Path
+    file_name: str
+    language: str
+    start_line: int
+    end_line: int
+    line_count: int
+    docstring: Optional[str] = None
+    imports: List[str] = field(default_factory=list)
+    decorators: List[str] = field(default_factory=list)
+    parameters: List[str] = field(default_factory=list)
+    return_type: Optional[str] = None
+    complexity_score: int = 1
+    original_content: str = ""
+
+
+@dataclass
+class ParsedChunk:
+    name: str
+    chunk_type: str
+    content: str
+    metadata: ChunkMetadata
+    priority: int = 0
+    dependencies: List[str] = field(default_factory=list)
+    summary: str = ""
+    is_boilerplate: bool = False
+
+
+class CodeChunker:
+    def __init__(self, config):
+        self.config = config
+        self.boilerplate_patterns = [
+            (r'@property\s*\n\s*def\s+(\w+)\s*\([^)]*\)\s*:', 'property'),
+            (r'@abstractmethod\s*\n\s*def\s+(\w+)\s*\([^)]*\)\s*:', 'abstractmethod'),
+            (r'@staticmethod\s*\n\s*def\s+(\w+)\s*\([^)]*\)\s*:', 'staticmethod'),
+            (r'@classmethod\s*\n\s*def\s+(\w+)\s*\([^)]*\)\s*:', 'classmethod'),
+            (r'def\s+__init__\s*\([^)]*\)\s*:', '__init__'),
+            (r'def\s+__str__\s*\([^)]*\)\s*:', '__str__'),
+            (r'def\s+__repr__\s*\([^)]*\)\s*:', '__repr__'),
+            (r'def\s+__eq__\s*\([^)]*\)\s*:', '__eq__'),
+            (r'def\s+__hash__\s*\([^)]*\)\s*:', '__hash__'),
+            (r'def\s+__lt__\s*\([^)]*\)\s*:', '__lt__'),
+            (r'def\s+__le__\s*\([^)]*\)\s*:', '__le__'),
+            (r'def\s+__gt__\s*\([^)]*\)\s*:', '__gt__'),
+            (r'def\s+__ge__\s*\([^)]*\)\s*:', '__ge__'),
+        ]
+
+    def chunk_all(self, chunks: List[ParsedChunk]) -> List[ParsedChunk]:
+        """Process all chunks: remove boilerplate, add priorities."""
+        result = []
+        for chunk in chunks:
+            chunk = self._remove_boilerplate(chunk)
+            chunk = self._calculate_priority(chunk)
+            result.append(chunk)
+        return self._sort_by_priority(result)
+
+    def _remove_boilerplate(self, chunk: ParsedChunk) -> ParsedChunk:
+        """Identify and mark boilerplate chunks."""
+        if chunk.chunk_type != "function":
+            return chunk
+
+        content = chunk.content
+        for pattern, pattern_type in self.boilerplate_patterns:
+            if re.search(pattern, content, re.MULTILINE):
+                chunk.is_boilerplate = True
+                break
+
+        if chunk.metadata.docstring and len(chunk.metadata.docstring) > 200:
+            pass
+        elif chunk.metadata.parameters and len(chunk.metadata.parameters) > 10:
+            pass
+
+        return chunk
+
+    def _calculate_priority(self, chunk: ParsedChunk) -> ParsedChunk:
+        """Calculate priority score for a chunk."""
+        priority = 0
+
+        name_lower = chunk.name.lower()
+        high_priority_keywords = ['main', 'run', 'execute', 'process', 'handle', 'start']
+        medium_priority_keywords = ['core', 'service', 'controller', 'manager', 'factory']
+
+        for keyword in high_priority_keywords:
+            if keyword in name_lower:
+                priority += 50
+                break
+
+        for keyword in medium_priority_keywords:
+            if keyword in name_lower:
+                priority += 25
+                break
+
+        if chunk.chunk_type == "class":
+            priority += 20
+        elif chunk.chunk_type == "function":
+            priority += 10
+
+        priority += min(chunk.metadata.line_count // 10, 30)
+
+        if chunk.metadata.complexity_score > 5:
+            priority += chunk.metadata.complexity_score * 5
+
+        if chunk.metadata.decorators:
+            priority += len(chunk.metadata.decorators) * 5
+
+        if not chunk.is_boilerplate:
+            priority += 10
+
+        chunk.priority = priority
+        return chunk
+
+    def _sort_by_priority(self, chunks: List[ParsedChunk]) -> List[ParsedChunk]:
+        """Sort chunks by priority (highest first)."""
+        return sorted(chunks, key=lambda c: c.priority, reverse=True)
+
+    def split_large_chunk(self, chunk: ParsedChunk) -> List[ParsedChunk]:
+        """Split a large chunk into smaller pieces."""
+        if chunk.metadata.line_count <= self.config.max_chunk_size:
+            return [chunk]
+
+        lines = chunk.content.split('\n')
+        parts = []
+        current_part = []
+        current_lines = 0
+
+        for i, line in enumerate(lines):
+            current_part.append(line)
+            current_lines += 1
+
+            if current_lines >= self.config.max_chunk_size:
+                part_content = '\n'.join(current_part)
+                part_metadata = chunk.metadata
+                part_metadata.start_line = chunk.metadata.start_line + i - current_lines + 1
+                part_metadata.end_line = chunk.metadata.start_line + i
+                part_metadata.line_count = current_lines
+
+                parts.append(ParsedChunk(
+                    name=f"{chunk.name}_part_{len(parts) + 1}",
+                    chunk_type=chunk.chunk_type,
+                    content=part_content,
+                    metadata=part_metadata,
+                    priority=chunk.priority // 2
+                ))
+                current_part = []
+                current_lines = 0
+
+        if current_part:
+            part_content = '\n'.join(current_part)
+            part_metadata = chunk.metadata
+            part_metadata.start_line = chunk.metadata.start_line + len(lines) - current_lines
+            part_metadata.end_line = chunk.metadata.start_line + len(lines) - 1
+            part_metadata.line_count = current_lines
+
+            parts.append(ParsedChunk(
+                name=f"{chunk.name}_part_{len(parts) + 1}",
+                chunk_type=chunk.chunk_type,
+                content=part_content,
+                metadata=part_metadata,
+                priority=chunk.priority // 2
+            ))
+
+        return parts
+
+
+class ChunkPriority:
+    CRITICAL = 100
+    HIGH = 75
+    MEDIUM = 50
+    LOW = 25
+    MINIMAL = 10