diff --git a/.cli_memory/models.py b/.cli_memory/models.py
new file mode 100644
index 0000000..670d78c
--- /dev/null
+++ b/.cli_memory/models.py
@@ -0,0 +1,184 @@
+from dataclasses import dataclass, field
+from datetime import datetime
+from typing import Optional, List, Dict, Any
+from enum import Enum
+
+
+class CommandType(Enum):
+    GIT = "git"
+    DOCKER = "docker"
+    BUILD = "build"
+    TEST = "test"
+    DEPLOY = "deploy"
+    FILE_OP = "file_op"
+    SYSTEM = "system"
+    OTHER = "other"
+
+
+@dataclass
+class Project:
+    id: Optional[int] = None
+    name: str = ""
+    path: str = ""
+    git_remote: Optional[str] = None
+    tech_stack: List[str] = field(default_factory=list)
+    created_at: datetime = field(default_factory=datetime.utcnow)
+    updated_at: datetime = field(default_factory=datetime.utcnow)
+
+    def to_dict(self) -> Dict[str, Any]:
+        return {
+            "id": self.id,
+            "name": self.name,
+            "path": self.path,
+            "git_remote": self.git_remote,
+            "tech_stack": self.tech_stack,
+            "created_at": self.created_at.isoformat(),
+            "updated_at": self.updated_at.isoformat(),
+        }
+
+    @classmethod
+    def from_dict(cls, data: Dict[str, Any]) -> "Project":
+        return cls(
+            id=data.get("id"),
+            name=data.get("name", ""),
+            path=data.get("path", ""),
+            git_remote=data.get("git_remote"),
+            tech_stack=data.get("tech_stack", []),
+            created_at=datetime.fromisoformat(data["created_at"]) if data.get("created_at") else datetime.utcnow(),
+            updated_at=datetime.fromisoformat(data["updated_at"]) if data.get("updated_at") else datetime.utcnow(),
+        )
+
+
+@dataclass
+class Command:
+    id: Optional[int] = None
+    workflow_id: Optional[int] = None
+    project_id: Optional[int] = None
+    command: str = ""
+    command_type: CommandType = CommandType.OTHER
+    exit_code: Optional[int] = None
+    duration_ms: Optional[int] = None
+    working_directory: str = ""
+    timestamp: datetime = field(default_factory=datetime.utcnow)
+    tags: List[str] = field(default_factory=list)
+    metadata: Dict[str, Any] = field(default_factory=dict)
+
+    def to_dict(self) -> Dict[str, Any]:
+        return {
+            "id": self.id,
+            "workflow_id": self.workflow_id,
+            "project_id": self.project_id,
+            "command": self.command,
+            "command_type": self.command_type.value,
+            "exit_code": self.exit_code,
+            "duration_ms": self.duration_ms,
+            "working_directory": self.working_directory,
+            "timestamp": self.timestamp.isoformat(),
+            "tags": self.tags,
+            "metadata": self.metadata,
+        }
+
+    @classmethod
+    def from_dict(cls, data: Dict[str, Any]) -> "Command":
+        return cls(
+            id=data.get("id"),
+            workflow_id=data.get("workflow_id"),
+            project_id=data.get("project_id"),
+            command=data.get("command", ""),
+            command_type=CommandType(data.get("command_type", "other")),
+            exit_code=data.get("exit_code"),
+            duration_ms=data.get("duration_ms"),
+            working_directory=data.get("working_directory", ""),
+            timestamp=datetime.fromisoformat(data["timestamp"]) if data.get("timestamp") else datetime.utcnow(),
+            tags=data.get("tags", []),
+            metadata=data.get("metadata", {}),
+        )
+
+
+@dataclass
+class Workflow:
+    id: Optional[int] = None
+    project_id: Optional[int] = None
+    name: str = ""
+    description: str = ""
+    commands: List[Command] = field(default_factory=list)
+    created_at: datetime = field(default_factory=datetime.utcnow)
+    updated_at: datetime = field(default_factory=datetime.utcnow)
+    is_automated: bool = False
+    pattern_confidence: float = 0.0
+    usage_count: int = 0
+
+    def to_dict(self) -> Dict[str, Any]:
+        return {
+            "id": self.id,
+            "project_id": self.project_id,
+            "name": self.name,
+            "description": self.description,
+            "commands": [c.to_dict() for c in self.commands],
+            "created_at": self.created_at.isoformat(),
+            "updated_at": self.updated_at.isoformat(),
+            "is_automated": self.is_automated,
+            "pattern_confidence": self.pattern_confidence,
+            "usage_count": self.usage_count,
+        }
+
+    @classmethod
+    def from_dict(cls, data: Dict[str, Any]) -> "Workflow":
+        return cls(
+            id=data.get("id"),
+            project_id=data.get("project_id"),
+            name=data.get("name", ""),
+            description=data.get("description", ""),
+            commands=[Command.from_dict(c) for c in data.get("commands", [])],
+            created_at=datetime.fromisoformat(data["created_at"]) if data.get("created_at") else datetime.utcnow(),
+            updated_at=datetime.fromisoformat(data["updated_at"]) if data.get("updated_at") else datetime.utcnow(),
+            is_automated=data.get("is_automated", False),
+            pattern_confidence=data.get("pattern_confidence", 0.0),
+            usage_count=data.get("usage_count", 0),
+        )
+
+
+@dataclass
+class Suggestion:
+    id: Optional[int] = None
+    project_id: Optional[int] = None
+    command: str = ""
+    context: str = ""
+    confidence: float = 0.0
+    frequency: int = 0
+    last_used: Optional[datetime] = None
+    pattern_id: Optional[int] = None
+
+    def to_dict(self) -> Dict[str, Any]:
+        return {
+            "id": self.id,
+            "project_id": self.project_id,
+            "command": self.command,
+            "context": self.context,
+            "confidence": self.confidence,
+            "frequency": self.frequency,
+            "last_used": self.last_used.isoformat() if self.last_used else None,
+            "pattern_id": self.pattern_id,
+        }
+
+
+@dataclass
+class Pattern:
+    id: Optional[int] = None
+    project_id: Optional[int] = None
+    name: str = ""
+    command_sequence: List[str] = field(default_factory=list)
+    occurrences: int = 0
+    confidence: float = 0.0
+    created_at: datetime = field(default_factory=datetime.utcnow)
+
+    def to_dict(self) -> Dict[str, Any]:
+        return {
+            "id": self.id,
+            "project_id": self.project_id,
+            "name": self.name,
+            "command_sequence": self.command_sequence,
+            "occurrences": self.occurrences,
+            "confidence": self.confidence,
+            "created_at": self.created_at.isoformat(),
+        }