diff --git a/app/database/__init__.py b/app/database/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/app/database.py b/app/database/db.py
similarity index 69%
rename from app/database.py
rename to app/database/db.py
index 6bbb14eb..9ed9c9ef 100644
--- a/app/database.py
+++ b/app/database/db.py
@@ -1,9 +1,10 @@
 import logging
+import os
 import sqlite3
 from contextlib import contextmanager
 from queue import Queue, Empty, Full
 import threading
-from app.database_updater import DatabaseUpdater
+from app.database.updater import DatabaseUpdater
 import folder_paths
 from comfy.cli_args import args
 
@@ -11,7 +12,10 @@ from comfy.cli_args import args
 class Database:
     def __init__(self, database_path=None, pool_size=1):
         if database_path is None:
+            self.exists = False
             database_path = "file::memory:?cache=shared"
+        else:
+            self.exists = os.path.exists(database_path)
 
         self.database_path = database_path
         self.pool_size = pool_size
@@ -20,6 +24,7 @@ class Database:
         self._db_lock = threading.Lock()
         self._initialized = False
         self._closing = False
+        self._after_update_callbacks = []
 
     def _setup(self):
         if self._initialized:
@@ -33,14 +38,28 @@ class Database:
     def _create_connection(self):
         # TODO: Catch error for sqlite lib missing on linux
         logging.info(f"Creating connection to {self.database_path}")
-        conn = sqlite3.connect(self.database_path, check_same_thread=False)
+        conn = sqlite3.connect(
+            self.database_path,
+            check_same_thread=False,
+            uri=self.database_path.startswith("file::"),
+        )
         conn.execute("PRAGMA foreign_keys = ON")
+        self.exists = True
+        logging.info(f"Connected!")
         return conn
 
     def _make_db(self):
         with self._get_connection() as con:
-            updater = DatabaseUpdater(con)
-            updater.update()
+            updater = DatabaseUpdater(con, self.database_path)
+            result = updater.update()
+            if result is not None:
+                old_version, new_version = result
+
+                for callback in self._after_update_callbacks:
+                    callback(old_version, new_version)
+
+    def _transform(self, row, columns):
+        return {col.name: value for value, col in zip(row, columns)}
 
     @contextmanager
     def _get_connection(self):
@@ -71,6 +90,15 @@ class Database:
         with self._get_connection() as connection:
             yield connection
 
+    def execute(self, sql, *args):
+        with self.get_connection() as connection:
+            cursor = connection.execute(sql, args)
+            results = cursor.fetchall()
+            return results
+
+    def register_after_update_callback(self, callback):
+        self._after_update_callbacks.append(callback)
+
     def close(self):
         if self._closing:
             return
@@ -82,6 +110,7 @@ class Database:
                 conn.close()
             except Empty:
                 break
+        self._closing = False
 
     def __del__(self):
         try:
diff --git a/app/database/entities.py b/app/database/entities.py
new file mode 100644
index 00000000..c608ace3
--- /dev/null
+++ b/app/database/entities.py
@@ -0,0 +1,301 @@
+from typing import Optional, Any, Callable
+from dataclasses import dataclass
+from functools import wraps
+from aiohttp import web
+from app.database.db import db
+
+primitives = (bool, str, int, float, type(None))
+
+
+def is_primitive(obj):
+    return isinstance(obj, primitives)
+
+
+class ValidationError(Exception):
+    def __init__(self, message: str, field: str = None, value: Any = None):
+        self.message = message
+        self.field = field
+        self.value = value
+        super().__init__(self.message)
+
+    def to_json(self):
+        result = {"message": self.message}
+        if self.field is not None:
+            result["field"] = self.field
+        if self.value is not None:
+            result["value"] = self.value
+        return result
+
+    def __str__(self) -> str:
+        return f"{self.message} {self.field} {self.value}"
+
+
+class EntityCommon(dict):
+    @classmethod
+    def _get_route(cls, include_key: bool):
+        route = f"/db/{cls.__table_name__}"
+        if include_key:
+            route += "".join([f"/{{{k}}}" for k in cls.__key_columns__])
+        return route
+
+    @classmethod
+    def _register_route(cls, routes, verb: str, include_key: bool, handler: Callable):
+        route = cls._get_route(include_key)
+
+        @getattr(routes, verb)(route)
+        async def _(request):
+            try:
+                data = await handler(request)
+                return web.json_response(data)
+            except ValidationError as e:
+                return web.json_response(e.to_json(), status=400)
+
+    @classmethod
+    def _transform(cls, row: list[Any]):
+        return {col: value for col, value in zip(cls.__columns__, row)}
+
+    @classmethod
+    def _transform_rows(cls, rows: list[list[Any]]):
+        return [cls._transform(row) for row in rows]
+
+    @classmethod
+    def _validate(cls, fields: list[str], data: dict, allow_missing: bool = False):
+        result = {}
+
+        if not isinstance(data, dict):
+            raise ValidationError("Invalid data")
+
+        # Ensure all required fields are present
+        for field in data:
+            if field not in fields:
+                raise ValidationError("Unknown field", field)
+
+        for key in fields:
+            col = cls.__columns__[key]
+            if key not in data:
+                if col.required and not allow_missing:
+                    raise ValidationError("Missing field", key)
+                else:
+                    # e.g. for updates, we allow missing fields
+                    continue
+            elif data[key] is None and col.required:
+                # Dont allow None for required fields
+                raise ValidationError("Required field", key)
+
+            # Validate data type
+            value = data[key]
+
+            if value is not None and not is_primitive(value):
+                raise ValidationError("Invalid value", key, value)
+
+            try:
+                type = col.type
+                if value is not None and not isinstance(value, type):
+                    value = type(value)
+                result[key] = value
+            except Exception:
+                raise ValidationError("Invalid value", key, value)
+
+        return result
+
+    @classmethod
+    def _validate_id(cls, id: dict):
+        return cls._validate(cls.__key_columns__, id)
+
+    @classmethod
+    def _validate_data(cls, data: dict):
+        return cls._validate(cls.__columns__.keys(), data)
+
+    def __setattr__(self, name, value):
+        if name in self.__columns__:
+            self[name] = value
+        super().__setattr__(name, value)
+
+    def __getattr__(self, name):
+        if name in self:
+            return self[name]
+        raise AttributeError(f"'{self.__class__.__name__}' has no attribute '{name}'")
+
+
+class GetEntity(EntityCommon):
+    @classmethod
+    def get(cls, top: Optional[int] = None, where: Optional[str] = None):
+        limit = ""
+        if top is not None and isinstance(top, int):
+            limit = f" LIMIT {top}"
+        result = db.execute(
+            f"SELECT * FROM {cls.__table_name__}{limit}{f' WHERE {where}' if where else ''}",
+        )
+
+        # Map each row in result to an instance of the class
+        return cls._transform_rows(result)
+
+    @classmethod
+    def register_route(cls, routes):
+        async def get_handler(request):
+            top = request.rel_url.query.get("top", None)
+            if top is not None:
+                try:
+                    top = int(top)
+                except Exception:
+                    raise ValidationError("Invalid top parameter", "top", top)
+            return cls.get(top)
+
+        cls._register_route(routes, "get", False, get_handler)
+
+
+class GetEntityById(EntityCommon):
+    @classmethod
+    def get_by_id(cls, id: dict):
+        id = cls._validate_id(id)
+
+        result = db.execute(
+            f"SELECT * FROM {cls.__table_name__} WHERE {cls.__where_clause__}",
+            *[id[key] for key in cls.__key_columns__],
+        )
+
+        return cls._transform_rows(result)
+
+    @classmethod
+    def register_route(cls, routes):
+        async def get_by_id_handler(request):
+            id = {key: request.match_info.get(key, None) for key in cls.__key_columns__}
+            return cls.get_by_id(id)
+
+        cls._register_route(routes, "get", True, get_by_id_handler)
+
+
+class CreateEntity(EntityCommon):
+    @classmethod
+    def create(cls, data: dict, allow_upsert: bool = False):
+        data = cls._validate_data(data)
+        values = ", ".join(["?"] * len(data))
+        on_conflict = ""
+
+        data_keys = ", ".join(list(data.keys()))
+        if allow_upsert:
+            # Remove key columns from data
+            upsert_keys = [key for key in data if key not in cls.__key_columns__]
+
+            set_clause = ", ".join([f"{k} = excluded.{k}" for k in upsert_keys])
+            on_conflict = f" ON CONFLICT ({', '.join(cls.__key_columns__)}) DO UPDATE SET {set_clause}"
+        sql = f"INSERT INTO {cls.__table_name__} ({data_keys}) VALUES ({values}){on_conflict} RETURNING *"
+        result = db.execute(
+            sql,
+            *[data[key] for key in data],
+        )
+
+        if len(result) == 0:
+            raise RuntimeError("Failed to create entity")
+
+        return cls._transform_rows(result)[0]
+
+    @classmethod
+    def register_route(cls, routes):
+        async def create_handler(request):
+            data = await request.json()
+            return cls.create(data)
+
+        cls._register_route(routes, "post", False, create_handler)
+
+
+class UpdateEntity(EntityCommon):
+    @classmethod
+    def update(cls, id: list, data: dict):
+        pass
+
+
+class UpsertEntity(CreateEntity):
+    @classmethod
+    def upsert(cls, data: dict):
+        return cls.create(data, allow_upsert=True)
+
+    @classmethod
+    def register_route(cls, routes):
+        async def upsert_handler(request):
+            data = await request.json()
+            return cls.upsert(data)
+
+        cls._register_route(routes, "put", False, upsert_handler)
+
+
+class DeleteEntity(EntityCommon):
+    @classmethod
+    def delete(cls, id: list):
+        pass
+
+
+class BaseEntity(GetEntity, CreateEntity, UpdateEntity, DeleteEntity, GetEntityById):
+    pass
+
+
+@dataclass
+class Column:
+    type: Any
+    required: bool = False
+    key: bool = False
+    default: Any = None
+
+
+def column(type_: Any, required: bool = False, key: bool = False, default: Any = None):
+    return Column(type_, required, key, default)
+
+
+def table(table_name: str):
+    def decorator(cls):
+        # Store table name
+        cls.__table_name__ = table_name
+
+        # Process column definitions
+        columns: dict[str, Column] = {}
+        for attr_name, attr_value in cls.__dict__.items():
+            if isinstance(attr_value, Column):
+                columns[attr_name] = attr_value
+
+        # Store columns metadata
+        cls.__columns__ = columns
+        cls.__key_columns__ = [col for col in columns if columns[col].key]
+        cls.__column_csv__ = ", ".join([col for col in columns])
+        cls.__where_clause__ = " AND ".join(
+            [f"{col} = ?" for col in cls.__key_columns__]
+        )
+
+        # Add initialization
+        original_init = cls.__init__
+
+        @wraps(original_init)
+        def new_init(self, *args, **kwargs):
+            # Initialize columns with default values
+            for col_name, col_def in cls.__columns__.items():
+                setattr(self, col_name, col_def.default)
+            # Call original init
+            original_init(self, *args, **kwargs)
+
+        cls.__init__ = new_init
+        return cls
+
+    return decorator
+
+
+def test():
+    @table("models")
+    class Model(BaseEntity):
+        id: int = column(int, required=True, key=True)
+        path: str = column(str, required=True)
+        name: str = column(str, required=True)
+        description: Optional[str] = column(str)
+        architecture: Optional[str] = column(str)
+        type: str = column(str, required=True)
+        hash: Optional[str] = column(str)
+        source_url: Optional[str] = column(str)
+
+    return Model
+
+
+@table("test")
+class Test(GetEntity, CreateEntity):
+    id: int = column(int, required=True, key=True)
+    test: str = column(str, required=True)
+
+
+Model = test()
diff --git a/app/database/routes.py b/app/database/routes.py
new file mode 100644
index 00000000..eb2c14b9
--- /dev/null
+++ b/app/database/routes.py
@@ -0,0 +1,32 @@
+from app.database.db import db
+from aiohttp import web
+
+def create_routes(
+    routes, prefix, entity, get=False, get_by_id=False, post=False, delete=False
+):
+    if get:
+        @routes.get(f"/{prefix}/{table}")
+        async def get_table(request):
+            connection = db.get_connection()
+            cursor = connection.cursor()
+            cursor.execute(f"SELECT * FROM {table}")
+            rows = cursor.fetchall()
+            return web.json_response(rows)
+        
+    if get_by_id:
+        @routes.get(f"/{prefix}/{table}/{id}")
+        async def get_table_by_id(request):
+            connection = db.get_connection()
+            cursor = connection.cursor()
+            cursor.execute(f"SELECT * FROM {table} WHERE id = {id}")
+            row = cursor.fetchone()
+            return web.json_response(row)
+        
+    if post:
+        @routes.post(f"/{prefix}/{table}")
+        async def post_table(request):
+            data = await request.json()
+            connection = db.get_connection()
+            cursor = connection.cursor()
+            cursor.execute(f"INSERT INTO {table} ({data}) VALUES ({data})")
+            return web.json_response({"status": "success"})
diff --git a/app/database_updater.py b/app/database/updater.py
similarity index 56%
rename from app/database_updater.py
rename to app/database/updater.py
index 58acb9d6..2194a048 100644
--- a/app/database_updater.py
+++ b/app/database/updater.py
@@ -1,13 +1,16 @@
 import logging
 import os
+import sqlite3
+from app.database.versions.v1 import v1
 
 
 class DatabaseUpdater:
-    def __init__(self, connection):
+    def __init__(self, connection, database_path):
         self.connection = connection
+        self.database_path = database_path
         self.current_version = self.get_db_version()
         self.version_updates = {
-            1: self._update_to_v1,
+            1: v1,
         }
         self.max_version = max(self.version_updates.keys())
         self.update_required = self.current_version < self.max_version
@@ -16,16 +19,35 @@ class DatabaseUpdater:
     def get_db_version(self):
         return self.connection.execute("PRAGMA user_version").fetchone()[0]
 
+    def backup(self):
+        bkp_path = self.database_path + ".bkp"
+        if os.path.exists(bkp_path):
+            # TODO: auto-rollback failed upgrades
+            raise Exception(
+                f"Database backup already exists, this indicates that a previous upgrade failed. Please restore this backup before continuing. Backup location: {bkp_path}"
+            )
+
+        bkp = sqlite3.connect(bkp_path)
+        self.connection.backup(bkp)
+        bkp.close()
+        logging.info("Database backup taken pre-upgrade.")
+        return bkp_path
+
     def update(self):
         if not self.update_required:
-            return
+            return None
+
+        bkp_version = self.current_version
+        bkp_path = None
+        if self.current_version > 0:
+            bkp_path = self.backup()
 
         logging.info(f"Updating database: {self.current_version} -> {self.max_version}")
 
         dirname = os.path.dirname(__file__)
         cursor = self.connection.cursor()
         for version in range(self.current_version + 1, self.max_version + 1):
-            filename = os.path.join(dirname, f"db/v{version}.sql")
+            filename = os.path.join(dirname, f"versions/v{version}.sql")
             if not os.path.exists(filename):
                 raise Exception(
                     f"Database update script for version {version} not found"
@@ -49,6 +71,9 @@ class DatabaseUpdater:
         cursor.close()
         self.current_version = self.get_db_version()
 
-    def _update_to_v1(self, cursor):
-        # TODO: migrate users and settings
-        print("Updating to v1")
+        if bkp_path:
+            # Keep a copy of the backup in case something goes wrong and we need to rollback
+            os.rename(bkp_path, self.database_path + f".v{bkp_version}.bkp")
+        logging.info(f"Upgrade to successful.")
+
+        return (bkp_version, self.current_version)
diff --git a/app/database/versions/v1.py b/app/database/versions/v1.py
new file mode 100644
index 00000000..ddafc2a9
--- /dev/null
+++ b/app/database/versions/v1.py
@@ -0,0 +1,17 @@
+from folder_paths import folder_names_and_paths, get_filename_list, get_full_path
+
+
+def v1(cursor):
+    print("Updating to v1")
+    for folder_name in folder_names_and_paths.keys():
+        if folder_name == "custom_nodes":
+            continue
+
+        files = get_filename_list(folder_name)
+        for file in files:
+            file_path = get_full_path(folder_name, file)
+            file_without_extension = file.rsplit(".", maxsplit=1)[0]
+            cursor.execute(
+                "INSERT INTO models (path, name, type) VALUES (?, ?, ?)",
+                (file_path, file_without_extension, folder_name),
+            )
diff --git a/app/db/v1.sql b/app/database/versions/v1.sql
similarity index 67%
rename from app/db/v1.sql
rename to app/database/versions/v1.sql
index fd0783a5..fed71c67 100644
--- a/app/db/v1.sql
+++ b/app/database/versions/v1.sql
@@ -3,9 +3,10 @@ CREATE TABLE IF NOT EXISTS
         id INTEGER PRIMARY KEY AUTOINCREMENT,
         path TEXT NOT NULL,
         name TEXT NOT NULL,
-        model TEXT NOT NULL,
+        description TEXT,
+        architecture TEXT,
         type TEXT NOT NULL,
-        hash TEXT NOT NULL,
+        hash TEXT,
         source_url TEXT
     );
 
@@ -23,3 +24,18 @@ CREATE TABLE IF NOT EXISTS
         FOREIGN KEY (model_id) REFERENCES models (id) ON DELETE CASCADE,
         FOREIGN KEY (tag_id) REFERENCES tags (id) ON DELETE CASCADE
     );
+
+INSERT INTO
+    tags (name)
+VALUES
+    ('character'),
+    ('style'),
+    ('concept'),
+    ('clothing'),
+    ('poses'),
+    ('background'),
+    ('vehicle'),
+    ('buildings'),
+    ('objects'),
+    ('animal'),
+    ('action');
diff --git a/app/model_hasher.py b/app/model_hasher.py
new file mode 100644
index 00000000..f6a0e283
--- /dev/null
+++ b/app/model_hasher.py
@@ -0,0 +1,63 @@
+import hashlib
+import logging
+import threading
+import time
+from comfy.cli_args import args
+
+
+class ModelHasher:
+
+    def __init__(self):
+        self._thread = None
+        self._lock = threading.Lock()
+        self._model_entity = None
+
+    def start(self, model_entity):
+        if args.disable_model_hashing:
+            return
+
+        self._model_entity = model_entity
+
+        if self._thread is None:
+            # Lock to prevent multiple threads from starting
+            with self._lock:
+                if self._thread is None:
+                    self._thread = threading.Thread(target=self._hash_models)
+                    self._thread.daemon = True
+                    self._thread.start()
+
+    def _get_models(self):
+        models = self._model_entity.get("WHERE hash IS NULL")
+        return models
+
+    def _hash_model(self, model_path):
+        h = hashlib.sha256()
+        b = bytearray(128 * 1024)
+        mv = memoryview(b)
+        with open(model_path, "rb", buffering=0) as f:
+            while n := f.readinto(mv):
+                h.update(mv[:n])
+        hash = h.hexdigest()
+        return hash
+
+    def _hash_models(self):
+        while True:
+            models = self._get_models()
+
+            if len(models) == 0:
+                break
+
+            for model in models:
+                time.sleep(0)
+                now = time.time()
+                logging.info(f"Hashing model {model['path']}")
+                hash = self._hash_model(model["path"])
+                logging.info(
+                    f"Hashed model {model['path']} in {time.time() - now} seconds"
+                )
+                self._model_entity.update((model["id"],), {"hash": hash})
+
+        self._thread = None
+
+
+model_hasher = ModelHasher()
diff --git a/comfy/cli_args.py b/comfy/cli_args.py
index 672e5d84..02fb3560 100644
--- a/comfy/cli_args.py
+++ b/comfy/cli_args.py
@@ -144,10 +144,12 @@ parser.add_argument("--verbose", default='INFO', const='DEBUG', nargs="?", choic
 parser.add_argument("--log-stdout", action="store_true", help="Send normal process output to stdout instead of stderr (default).")
 
 parser.add_argument("--memory-database", default=False, action="store_true", help="Use an in-memory database instead of a file-based one.")
+parser.add_argument("--disable-model-hashing", action="store_true", help="Disable model hashing.")
 
 # The default built-in provider hosted under web/
 DEFAULT_VERSION_STRING = "comfyanonymous/ComfyUI@latest"
 
+
 parser.add_argument(
     "--front-end-version",
     type=str,
diff --git a/server.py b/server.py
index bae898ef..10be4b1d 100644
--- a/server.py
+++ b/server.py
@@ -34,6 +34,9 @@ from app.model_manager import ModelFileManager
 from app.custom_node_manager import CustomNodeManager
 from typing import Optional
 from api_server.routes.internal.internal_routes import InternalRoutes
+from app.database.entities import get_entity, init_entities
+from app.database.db import db
+from app.model_hasher import model_hasher
 
 class BinaryEventTypes:
     PREVIEW_IMAGE = 1
@@ -682,11 +685,25 @@ class PromptServer():
         timeout = aiohttp.ClientTimeout(total=None) # no timeout
         self.client_session = aiohttp.ClientSession(timeout=timeout)
 
+    def init_db(self, routes):
+        init_entities(routes)
+        models = get_entity("models")
+        
+        if db.exists:
+            model_hasher.start(models)
+        else:
+            def on_db_update(_, __):
+                model_hasher.start(models)
+
+            db.register_after_update_callback(on_db_update)
+
+
     def add_routes(self):
         self.user_manager.add_routes(self.routes)
         self.model_file_manager.add_routes(self.routes)
         self.custom_node_manager.add_routes(self.routes, self.app, nodes.LOADED_MODULE_DIRS.items())
         self.app.add_subapp('/internal', self.internal_routes.get_app())
+        self.init_db(self.routes)
 
         # Prefix every route with /api for easier matching for delegation.
         # This is very useful for frontend dev server, which need to forward
diff --git a/tests-unit/app_test/entities_test.py b/tests-unit/app_test/entities_test.py
new file mode 100644
index 00000000..d0eb5945
--- /dev/null
+++ b/tests-unit/app_test/entities_test.py
@@ -0,0 +1,401 @@
+from comfy.cli_args import args
+
+args.memory_database = True  # force in-memory database for testing
+
+from typing import Callable, Optional
+import pytest
+import pytest_asyncio
+from unittest.mock import patch
+from aiohttp import web
+from app.database.entities import (
+    column,
+    table,
+    Column,
+    GetEntity,
+    GetEntityById,
+    CreateEntity,
+    UpsertEntity,
+)
+from app.database.db import db
+
+pytestmark = pytest.mark.asyncio
+
+
+def create_table(entity):
+    # reset db
+    db.close()
+
+    cols: list[Column] = entity.__columns__
+    # Create tables as temporary so when we close the db, the tables are dropped for next test
+    sql = f"CREATE TEMPORARY TABLE {entity.__table_name__} (  "
+    for col_name, col in cols.items():
+        type = None
+        if col.type == int:
+            type = "INTEGER"
+        elif col.type == str:
+            type = "TEXT"
+
+        sql += f"{col_name} {type}"
+        if col.required:
+            sql += " NOT NULL"
+        sql += ", "
+
+    sql += f"PRIMARY KEY ({', '.join(entity.__key_columns__)})"
+    sql += ")"
+    db.execute(sql)
+
+
+async def wrap_db(method: Callable, expected_sql: str, expected_args: list):
+    with patch.object(db, "execute", wraps=db.execute) as mock:
+        response = await method()
+        assert mock.call_args[0][0] == expected_sql
+        assert mock.call_args[0][1:] == expected_args
+        return response
+
+
+@pytest.fixture
+def getable_entity():
+    @table("getable_entity")
+    class GetableEntity(GetEntity):
+        id: int = column(int, required=True, key=True)
+        test: str = column(str, required=True)
+        nullable: Optional[str] = column(str)
+
+    return GetableEntity
+
+
+@pytest.fixture
+def getable_by_id_entity():
+    @table("getable_by_id_entity")
+    class GetableByIdEntity(GetEntityById):
+        id: int = column(int, required=True, key=True)
+        test: str = column(str, required=True)
+
+    return GetableByIdEntity
+
+
+@pytest.fixture
+def getable_by_id_composite_entity():
+    @table("getable_by_id_composite_entity")
+    class GetableByIdCompositeEntity(GetEntityById):
+        id1: str = column(str, required=True, key=True)
+        id2: int = column(int, required=True, key=True)
+        test: str = column(str, required=True)
+
+    return GetableByIdCompositeEntity
+
+
+@pytest.fixture
+def creatable_entity():
+    @table("creatable_entity")
+    class CreatableEntity(CreateEntity):
+        id: int = column(int, required=True, key=True)
+        test: str = column(str, required=True)
+        reqd: str = column(str, required=True)
+        nullable: Optional[str] = column(str)
+
+    return CreatableEntity
+
+
+@pytest.fixture
+def upsertable_entity():
+    @table("upsertable_entity")
+    class UpsertableEntity(UpsertEntity):
+        id: int = column(int, required=True, key=True)
+        test: str = column(str, required=True)
+        reqd: str = column(str, required=True)
+        nullable: Optional[str] = column(str)
+
+    return UpsertableEntity
+
+
+@pytest.fixture()
+def entity(request):
+    value = request.getfixturevalue(request.param)
+    create_table(value)
+    return value
+
+
+@pytest_asyncio.fixture
+async def client(aiohttp_client, app):
+    return await aiohttp_client(app)
+
+
+@pytest.fixture
+def app(entity):
+    app = web.Application()
+    routes = web.RouteTableDef()
+    entity.register_route(routes)
+    app.add_routes(routes)
+    return app
+
+
+@pytest.mark.parametrize("entity", ["getable_entity"], indirect=True)
+async def test_get_model_empty_response(client):
+    expected_sql = "SELECT * FROM getable_entity"
+    expected_args = ()
+    response = await wrap_db(
+        lambda: client.get("/db/getable_entity"), expected_sql, expected_args
+    )
+
+    assert response.status == 200
+    assert await response.json() == []
+
+
+@pytest.mark.parametrize("entity", ["getable_entity"], indirect=True)
+async def test_get_model_with_data(client):
+    # seed db
+    db.execute(
+        "INSERT INTO getable_entity (id, test, nullable) VALUES (1, 'test1', NULL), (2, 'test2', 'test2')"
+    )
+
+    expected_sql = "SELECT * FROM getable_entity"
+    expected_args = ()
+    response = await wrap_db(
+        lambda: client.get("/db/getable_entity"), expected_sql, expected_args
+    )
+
+    assert response.status == 200
+    assert await response.json() == [
+        {"id": 1, "test": "test1", "nullable": None},
+        {"id": 2, "test": "test2", "nullable": "test2"},
+    ]
+
+
+@pytest.mark.parametrize("entity", ["getable_entity"], indirect=True)
+async def test_get_model_with_top_parameter(client):
+    # seed with 3 rows
+    db.execute(
+        "INSERT INTO getable_entity (id, test, nullable) VALUES (1, 'test1', NULL), (2, 'test2', 'test2'), (3, 'test3', 'test3')"
+    )
+
+    expected_sql = "SELECT * FROM getable_entity LIMIT 2"
+    expected_args = ()
+    response = await wrap_db(
+        lambda: client.get("/db/getable_entity?top=2"),
+        expected_sql,
+        expected_args,
+    )
+
+    assert response.status == 200
+    assert await response.json() == [
+        {"id": 1, "test": "test1", "nullable": None},
+        {"id": 2, "test": "test2", "nullable": "test2"},
+    ]
+
+
+@pytest.mark.parametrize("entity", ["getable_entity"], indirect=True)
+async def test_get_model_with_invalid_top_parameter(client):
+    response = await client.get("/db/getable_entity?top=hello")
+    assert response.status == 400
+    assert await response.json() == {
+        "message": "Invalid top parameter",
+        "field": "top",
+        "value": "hello",
+    }
+
+
+@pytest.mark.parametrize("entity", ["getable_by_id_entity"], indirect=True)
+async def test_get_model_by_id_empty_response(client):
+    # seed db
+    db.execute("INSERT INTO getable_by_id_entity (id, test) VALUES (1, 'test1')")
+
+    expected_sql = "SELECT * FROM getable_by_id_entity WHERE id = ?"
+    expected_args = (1,)
+    response = await wrap_db(
+        lambda: client.get("/db/getable_by_id_entity/1"),
+        expected_sql,
+        expected_args,
+    )
+
+    assert response.status == 200
+    assert await response.json() == [
+        {"id": 1, "test": "test1"},
+    ]
+
+
+@pytest.mark.parametrize("entity", ["getable_by_id_entity"], indirect=True)
+async def test_get_model_by_id_with_invalid_id(client):
+    response = await client.get("/db/getable_by_id_entity/hello")
+    assert response.status == 400
+    assert await response.json() == {
+        "message": "Invalid value",
+        "field": "id",
+        "value": "hello",
+    }
+
+
+@pytest.mark.parametrize("entity", ["getable_by_id_composite_entity"], indirect=True)
+async def test_get_model_by_id_composite(client):
+    # seed db
+    db.execute(
+        "INSERT INTO getable_by_id_composite_entity (id1, id2, test) VALUES ('one', 2, 'test')"
+    )
+
+    expected_sql = (
+        "SELECT * FROM getable_by_id_composite_entity WHERE id1 = ? AND id2 = ?"
+    )
+    expected_args = ("one", 2)
+    response = await wrap_db(
+        lambda: client.get("/db/getable_by_id_composite_entity/one/2"),
+        expected_sql,
+        expected_args,
+    )
+
+    assert response.status == 200
+    assert await response.json() == [
+        {"id1": "one", "id2": 2, "test": "test"},
+    ]
+
+
+@pytest.mark.parametrize("entity", ["getable_by_id_composite_entity"], indirect=True)
+async def test_get_model_by_id_composite_with_invalid_id(client):
+    response = await client.get("/db/getable_by_id_composite_entity/hello/hello")
+    assert response.status == 400
+    assert await response.json() == {
+        "message": "Invalid value",
+        "field": "id2",
+        "value": "hello",
+    }
+
+
+@pytest.mark.parametrize("entity", ["creatable_entity"], indirect=True)
+async def test_create_model(client):
+    expected_sql = (
+        "INSERT INTO creatable_entity (id, test, reqd) VALUES (?, ?, ?) RETURNING *"
+    )
+    expected_args = (1, "test1", "reqd1")
+    response = await wrap_db(
+        lambda: client.post(
+            "/db/creatable_entity", json={"id": 1, "test": "test1", "reqd": "reqd1"}
+        ),
+        expected_sql,
+        expected_args,
+    )
+
+    assert response.status == 200
+    assert await response.json() == {
+        "id": 1,
+        "test": "test1",
+        "reqd": "reqd1",
+        "nullable": None,
+    }
+
+
+@pytest.mark.parametrize("entity", ["creatable_entity"], indirect=True)
+async def test_create_model_missing_required_field(client):
+    response = await client.post(
+        "/db/creatable_entity", json={"id": 1, "test": "test1"}
+    )
+
+    assert response.status == 400
+    assert await response.json() == {
+        "message": "Missing field",
+        "field": "reqd",
+    }
+
+
+@pytest.mark.parametrize("entity", ["creatable_entity"], indirect=True)
+async def test_create_model_missing_key_field(client):
+    response = await client.post(
+        "/db/creatable_entity",
+        json={"test": "test1", "reqd": "reqd1"},  # Missing 'id' which is a key
+    )
+
+    assert response.status == 400
+    assert await response.json() == {
+        "message": "Missing field",
+        "field": "id",
+    }
+
+
+@pytest.mark.parametrize("entity", ["creatable_entity"], indirect=True)
+async def test_create_model_invalid_key_data(client):
+    response = await client.post(
+        "/db/creatable_entity",
+        json={
+            "id": "not_an_integer",
+            "test": "test1",
+            "reqd": "reqd1",
+        },  # id should be int
+    )
+
+    assert response.status == 400
+    assert await response.json() == {
+        "message": "Invalid value",
+        "field": "id",
+        "value": "not_an_integer",
+    }
+
+
+@pytest.mark.parametrize("entity", ["creatable_entity"], indirect=True)
+async def test_create_model_invalid_field_data(client):
+    response = await client.post(
+        "/db/creatable_entity",
+        json={"id": "aaa", "test": "123", "reqd": "reqd1"},  # id should be int
+    )
+
+    assert response.status == 400
+    assert await response.json() == {
+        "message": "Invalid value",
+        "field": "id",
+        "value": "aaa",
+    }
+
+
+@pytest.mark.parametrize("entity", ["creatable_entity"], indirect=True)
+async def test_create_model_invalid_field_type(client):
+    response = await client.post(
+        "/db/creatable_entity",
+        json={
+            "id": 1,
+            "test": ["invalid_array"],
+            "reqd": "reqd1",
+        },  # test should be string
+    )
+
+    assert response.status == 400
+    assert await response.json() == {
+        "message": "Invalid value",
+        "field": "test",
+        "value": ["invalid_array"],
+    }
+
+
+@pytest.mark.parametrize("entity", ["creatable_entity"], indirect=True)
+async def test_create_model_invalid_field_name(client):
+    response = await client.post(
+        "/db/creatable_entity",
+        json={"id": 1, "test": "test1", "reqd": "reqd1", "nonexistent_field": "value"},
+    )
+
+    assert response.status == 400
+    assert await response.json() == {
+        "message": "Unknown field",
+        "field": "nonexistent_field",
+    }
+
+
+@pytest.mark.parametrize("entity", ["upsertable_entity"], indirect=True)
+async def test_upsert_model(client):
+    expected_sql = (
+        "INSERT INTO upsertable_entity (id, test, reqd) VALUES (?, ?, ?) "
+        "ON CONFLICT (id) DO UPDATE SET test = excluded.test, reqd = excluded.reqd "
+        "RETURNING *"
+    )
+    expected_args = (1, "test1", "reqd1")
+    response = await wrap_db(
+        lambda: client.put(
+            "/db/upsertable_entity", json={"id": 1, "test": "test1", "reqd": "reqd1"}
+        ),
+        expected_sql,
+        expected_args,
+    )
+
+    assert response.status == 200
+    assert await response.json() == {
+        "id": 1,
+        "test": "test1",
+        "reqd": "reqd1",
+        "nullable": None,
+    }