diff --git a/LICENSE b/LICENSE
index e4bde0c..ff21bb4 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2024 fastappkit contributors
+Copyright (c) 2025 fastappkit contributors
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/docs/guides/configuration.md b/docs/guides/configuration.md
index 5834927..88c7840 100644
--- a/docs/guides/configuration.md
+++ b/docs/guides/configuration.md
@@ -19,8 +19,8 @@ apps = [
 
 ### App Entry Formats
 
-- `apps.<name>` → Internal app (located in `./apps/<name>/`)
-- `<package_name>` → External app (pip-installed package, must be importable)
+-   `apps.<name>` → Internal app (located in `./apps/<name>/`)
+-   `<package_name>` → External app (pip-installed package, must be importable)
 
 ### Migration Order
 
@@ -36,6 +36,7 @@ order = ["core", "auth", "blog"]
 Settings are defined in `core/config.py` using Pydantic's `BaseSettings`:
 
 ```python
+from pydantic import Field
 from pydantic_settings import BaseSettings, SettingsConfigDict
 
 class Settings(BaseSettings):
@@ -45,12 +46,19 @@ class Settings(BaseSettings):
     Loads from .env file automatically.
     """
 
-    DATABASE_URL: str = "sqlite:///./app.db"
-    DEBUG: bool = False
+    database_url: str = Field(
+        default="sqlite:///./app.db",
+        alias="DATABASE_URL"
+    )
+    debug: bool = Field(
+        default=False,
+        alias="DEBUG"
+    )
 
     model_config = SettingsConfigDict(
         env_file=".env",
-        env_file_encoding="utf-8"
+        env_file_encoding="utf-8",
+        populate_by_name=True
     )
 ```
 
@@ -59,30 +67,41 @@ class Settings(BaseSettings):
 The scaffolded code includes minimal settings. You can extend it by adding more fields:
 
 ```python
+from pydantic import Field
+
 class Settings(BaseSettings):
-    DATABASE_URL: str = "sqlite:///./app.db"
-    DEBUG: bool = False
+    database_url: str = Field(
+        default="sqlite:///./app.db",
+        alias="DATABASE_URL"
+    )
+    debug: bool = Field(
+        default=False,
+        alias="DEBUG"
+    )
 
     # Add your custom settings here
-    SECRET_KEY: str = "change-me-in-production"
-    HOST: str = "127.0.0.1"
-    PORT: int = 8000
+    secret_key: str = Field(
+        default="change-me-in-production",
+        alias="SECRET_KEY"
+    )
+    host: str = Field(default="127.0.0.1", alias="HOST")
+    port: int = Field(default=8000, alias="PORT")
 
     model_config = SettingsConfigDict(
         env_file=".env",
         env_file_encoding="utf-8",
-        case_sensitive=True,
+        populate_by_name=True,
         extra="ignore",  # Ignore extra fields from .env
     )
 ```
 
 ### Customization Options
 
-- **Add Custom Settings:** Add fields to `Settings` class
-- **Validation:** Use Pydantic validators: `@field_validator('DATABASE_URL')`
-- **Default Values:** Set defaults in class definition
-- **Nested Settings:** Use Pydantic models for nested configuration
-- **Environment-Specific:** Override in `.env` or via environment variables
+-   **Add Custom Settings:** Add fields to `Settings` class with `Field()` instances
+-   **Validation:** Use Pydantic validators: `@field_validator('database_url')`
+-   **Default Values:** Set defaults in `Field()` instances
+-   **Nested Settings:** Use Pydantic models for nested configuration
+-   **Environment-Specific:** Override in `.env` or via environment variables (uppercase names are supported via aliases)
 
 ### Accessing Settings
 
@@ -92,7 +111,7 @@ class Settings(BaseSettings):
 from fastappkit.conf import get_settings
 
 settings = get_settings()
-db_url = settings.DATABASE_URL
+db_url = settings.database_url
 ```
 
 **FastAPI dependency injection:**
@@ -103,7 +122,7 @@ from fastapi import Depends
 from core.config import Settings
 
 def handler(settings: Settings = Depends(get_settings)):
-    return settings.DEBUG
+    return settings.debug
 ```
 
 ### Environment Variables
@@ -198,28 +217,28 @@ route_prefix = "/blog"
 ```
 
 !!! important "Manifest Requirements"
-    The manifest file is `fastappkit.toml`, not `pyproject.toml`. It must be located in the package directory (where `__init__.py` is). This ensures it's included when the package is published to PyPI. No fallback - `fastappkit.toml` is required for external apps.
+The manifest file is `fastappkit.toml`, not `pyproject.toml`. It must be located in the package directory (where `__init__.py` is). This ensures it's included when the package is published to PyPI. No fallback - `fastappkit.toml` is required for external apps.
 
 See the [Manifest Reference](../reference/manifest-reference.md) for complete details.
 
 ## Dependency Versions
 
 !!! warning "Default Dependency Versions"
-    When creating a new project or external app, dependency versions in `pyproject.toml` are set to `*` (any version) by default. This provides maximum flexibility but may lead to compatibility issues.
+When creating a new project or external app, dependency versions in `pyproject.toml` are set to `*` (any version) by default. This provides maximum flexibility but may lead to compatibility issues.
 
 ### Recommendations
 
 **For Production Projects:**
 
-- Update dependency versions to specific ranges (e.g., `>=0.120.0,<0.130`)
-- Pin exact versions for critical dependencies
-- Test thoroughly after updating versions
+-   Update dependency versions to specific ranges (e.g., `>=0.120.0,<0.130`)
+-   Pin exact versions for critical dependencies
+-   Test thoroughly after updating versions
 
 **For External Apps:**
 
-- Match dependency versions with the core project for compatibility
-- Use compatible version ranges that work with the core project's versions
-- Document minimum required versions in your app's README
+-   Match dependency versions with the core project for compatibility
+-   Use compatible version ranges that work with the core project's versions
+-   Document minimum required versions in your app's README
 
 **Example:**
 
@@ -232,9 +251,9 @@ alembic = ">=1.17.2,<1.18"
 ```
 
 !!! note "CLI Warning"
-    The CLI will display a warning message when creating projects or external apps, reminding you to update dependency versions according to your needs.
+The CLI will display a warning message when creating projects or external apps, reminding you to update dependency versions according to your needs.
 
 ## Learn More
 
-- [Configuration Reference](../reference/configuration-reference.md) - Complete configuration options
-- [Manifest Reference](../reference/manifest-reference.md) - External app manifest schema
+-   [Configuration Reference](../reference/configuration-reference.md) - Complete configuration options
+-   [Manifest Reference](../reference/manifest-reference.md) - External app manifest schema
diff --git a/docs/guides/creating-projects.md b/docs/guides/creating-projects.md
index d7fddb1..045992e 100644
--- a/docs/guides/creating-projects.md
+++ b/docs/guides/creating-projects.md
@@ -50,13 +50,14 @@ myproject/
 Start the development server:
 
 ```bash
-fastappkit core dev [--host <host>] [--port <port>] [--reload] [--verbose] [--debug] [--quiet]
+fastappkit core dev [--host <host>] [--port <port>] [--reload] [--verbose] [--debug] [--quiet] [<uvicorn-options>]
 ```
 
 ### Options
 
 -   `--host, -h`: Host to bind to (default: `127.0.0.1`)
 -   `--port, -p`: Port to bind to (default: `8000`)
+-   Additional uvicorn options: All other arguments are forwarded to uvicorn (e.g., `--workers`, `--log-level`, `--access-log`)
 -   `--reload`: Enable auto-reload on code changes
 -   `--verbose, -v`: Enable verbose output (overrides global setting)
 -   `--debug`: Enable debug output (overrides global setting, includes stack traces)
diff --git a/docs/guides/deployment.md b/docs/guides/deployment.md
index 7676f0e..c6a5ff7 100644
--- a/docs/guides/deployment.md
+++ b/docs/guides/deployment.md
@@ -15,7 +15,7 @@ DEBUG=false
 ```
 
 !!! warning "Security"
-    Never commit `.env` files with sensitive data. Use environment variables or secure secret management systems in production.
+Never commit `.env` files with sensitive data. Use environment variables or secure secret management systems in production.
 
 ### Dependency Versions
 
@@ -38,7 +38,7 @@ fastappkit migrate all
 ```
 
 !!! tip "Migration Strategy"
-    Run migrations in a separate step before deploying application code. This ensures the database schema is ready before the new code runs.
+Run migrations in a separate step before deploying application code. This ensures the database schema is ready before the new code runs.
 
 ## Deployment Options
 
@@ -106,7 +106,7 @@ gunicorn main:app -w 4 -k uvicorn.workers.UvicornWorker --bind 0.0.0.0:8000
 ```
 
 !!! note "Development Server"
-    The `fastappkit core dev` command is intended for development only. Use a production ASGI server for production deployments.
+The `fastappkit core dev` command is intended for development only. Use a production ASGI server for production deployments.
 
 ## Monitoring and Logging
 
@@ -115,18 +115,22 @@ Configure proper logging for production:
 ```python
 # core/config.py
 import logging
+from pydantic import Field
 from pydantic_settings import BaseSettings, SettingsConfigDict
 
 class Settings(BaseSettings):
-    DATABASE_URL: str
-    DEBUG: bool = False
-    LOG_LEVEL: str = "INFO"
+    database_url: str = Field(alias="DATABASE_URL")
+    debug: bool = Field(default=False, alias="DEBUG")
+    log_level: str = Field(default="INFO", alias="LOG_LEVEL")
 
-    model_config = SettingsConfigDict(env_file=".env")
+    model_config = SettingsConfigDict(
+        env_file=".env",
+        populate_by_name=True
+    )
 
 # Configure logging
 logging.basicConfig(
-    level=getattr(logging, settings.LOG_LEVEL),
+    level=getattr(logging, settings.log_level),
     format='%(asctime)s - %(name)s - %(levelname)s - %(message)s'
 )
 ```
@@ -148,5 +152,5 @@ def health_check():
 
 ## Learn More
 
-- [Configuration Guide](configuration.md) - Production configuration
-- [Best Practices](../advanced/best-practices.md) - Production best practices
+-   [Configuration Guide](configuration.md) - Production configuration
+-   [Best Practices](../advanced/best-practices.md) - Production best practices
diff --git a/docs/reference/api-reference.md b/docs/reference/api-reference.md
index b87e317..de37dc1 100644
--- a/docs/reference/api-reference.md
+++ b/docs/reference/api-reference.md
@@ -23,10 +23,10 @@ app = kit.create_app()
 
 Create and configure FastAPI application.
 
-- Loads all apps from `fastappkit.toml`
-- Validates app manifests
-- Mounts routers with automatic prefixes
-- Returns configured FastAPI application
+-   Loads all apps from `fastappkit.toml`
+-   Validates app manifests
+-   Mounts routers with automatic prefixes
+-   Returns configured FastAPI application
 
 ## Settings API
 
@@ -38,7 +38,7 @@ Get the current settings instance.
 from fastappkit.conf import get_settings
 
 settings = get_settings()
-db_url = settings.DATABASE_URL
+db_url = settings.database_url
 ```
 
 ### set_settings()
@@ -198,5 +198,5 @@ print(sql)
 
 ## Learn More
 
-- [Architecture](../advanced/architecture.md) - System architecture
-- [Extending fastappkit](../advanced/extending-fastappkit.md) - Extension guide
+-   [Architecture](../advanced/architecture.md) - System architecture
+-   [Extending fastappkit](../advanced/extending-fastappkit.md) - Extension guide
diff --git a/docs/reference/cli-reference.md b/docs/reference/cli-reference.md
index f57adf1..1d9f57c 100644
--- a/docs/reference/cli-reference.md
+++ b/docs/reference/cli-reference.md
@@ -6,10 +6,10 @@ Complete reference for all fastappkit CLI commands.
 
 All commands support these global options:
 
-- `--verbose, -v`: Enable verbose output
-- `--debug`: Enable debug output (includes stack traces)
-- `--quiet, -q`: Suppress output
-- `--version, -V`: Show version and exit
+-   `--verbose, -v`: Enable verbose output
+-   `--debug`: Enable debug output (includes stack traces)
+-   `--quiet, -q`: Suppress output
+-   `--version, -V`: Show version and exit
 
 ### Show Version
 
@@ -35,12 +35,12 @@ fastappkit core new <name> [--project-root <path>] [--description <text>]
 
 **Arguments:**
 
-- `<name>`: Project name (required)
+-   `<name>`: Project name (required)
 
 **Options:**
 
-- `--project-root <path>`: Directory to create project in (default: current working directory)
-- `--description <text>`: Project description
+-   `--project-root <path>`: Directory to create project in (default: current working directory)
+-   `--description <text>`: Project description
 
 **Examples:**
 
@@ -57,19 +57,20 @@ Run the development server.
 **Syntax:**
 
 ```bash
-fastappkit core dev [--host <host>] [--port <port>] [--reload] [--verbose] [--debug] [--quiet]
+fastappkit core dev [--host <host>] [--port <port>] [--reload] [--verbose] [--debug] [--quiet] [<uvicorn-options>]
 ```
 
 **Options:**
 
-- `--host, -h <host>`: Host to bind to (default: `127.0.0.1`)
-- `--port, -p <port>`: Port to bind to (default: `8000`)
-- `--reload`: Enable auto-reload on code changes
-- `--verbose, -v`: Enable verbose output (overrides global setting)
-- `--debug`: Enable debug output (overrides global setting, includes stack traces)
-- `--quiet, -q`: Suppress output (overrides global setting)
+-   `--host, -h <host>`: Host to bind to (default: `127.0.0.1`)
+-   `--port, -p <port>`: Port to bind to (default: `8000`)
+-   `--reload`: Enable auto-reload on code changes
+-   `--verbose, -v`: Enable verbose output (overrides global setting)
+-   `--debug`: Enable debug output (overrides global setting, includes stack traces)
+-   `--quiet, -q`: Suppress output (overrides global setting)
+-   `<uvicorn-options>`: Additional options are forwarded to uvicorn (e.g., `--workers`, `--log-level`, `--access-log`)
 
-**Note:** This command must be run from the project root directory (where `fastappkit.toml` is located).
+**Note:** This command must be run from the project root directory (where `fastappkit.toml` is located). All additional arguments are forwarded to uvicorn, allowing you to use any uvicorn option.
 
 **Examples:**
 
@@ -77,6 +78,9 @@ fastappkit core dev [--host <host>] [--port <port>] [--reload] [--verbose] [--de
 fastappkit core dev
 fastappkit core dev --host 0.0.0.0 --port 8080
 fastappkit core dev --reload
+fastappkit core dev --workers 4
+fastappkit core dev --log-level debug
+fastappkit core dev --access-log
 ```
 
 ## App Commands
@@ -93,11 +97,11 @@ fastappkit app new <name> [--as-package]
 
 **Arguments:**
 
-- `<name>`: App name (required)
+-   `<name>`: App name (required)
 
 **Options:**
 
-- `--as-package`: Create as external package (required for external apps)
+-   `--as-package`: Create as external package (required for external apps)
 
 **Note:** This command must be run from the project root directory (where `fastappkit.toml` is located).
 
@@ -120,9 +124,9 @@ fastappkit app list [--verbose] [--debug] [--quiet]
 
 **Options:**
 
-- `--verbose, -v`: Show detailed information (import path, migrations path, etc.)
-- `--debug`: Show debug information
-- `--quiet, -q`: Suppress output
+-   `--verbose, -v`: Show detailed information (import path, migrations path, etc.)
+-   `--debug`: Show debug information
+-   `--quiet, -q`: Suppress output
 
 **Note:** This command must be run from the project root directory.
 
@@ -145,11 +149,11 @@ fastappkit app validate <name> [--json]
 
 **Arguments:**
 
-- `<name>`: App name (required)
+-   `<name>`: App name (required)
 
 **Options:**
 
-- `--json`: Output results as JSON (CI-friendly)
+-   `--json`: Output results as JSON (CI-friendly)
 
 **Note:** This command must be run from the project root directory.
 
@@ -174,7 +178,7 @@ fastappkit migrate core -m <message>
 
 **Options:**
 
-- `-m, --message <message>`: Migration message (required)
+-   `-m, --message <message>`: Migration message (required)
 
 **Note:** This command must be run from the project root directory.
 
@@ -196,33 +200,33 @@ fastappkit migrate app <name> <action> [options]
 
 **Arguments:**
 
-- `<name>`: App name (required)
-- `<action>`: Migration action (required)
+-   `<name>`: App name (required)
+-   `<action>`: Migration action (required)
 
 **Actions:**
 
-- `makemigrations`: Generate new migration (internal apps only)
-- `upgrade`: Apply migrations (external apps only)
-- `downgrade`: Revert migrations (external apps only)
-- `preview`: Show SQL without executing (external apps only)
+-   `makemigrations`: Generate new migration (internal apps only)
+-   `upgrade`: Apply migrations (external apps only)
+-   `downgrade`: Revert migrations (external apps only)
+-   `preview`: Show SQL without executing (external apps only)
 
 **Options:**
 
-- `-m, --message <message>`: Migration message (required for `makemigrations`)
-- `--revision, -r <rev>`: Specific revision (default: `head` for upgrade/preview)
+-   `-m, --message <message>`: Migration message (required for `makemigrations`)
+-   `--revision, -r <rev>`: Specific revision (default: `head` for upgrade/preview)
 
 **Note:** This command must be run from the project root directory.
 
 **Limitations:**
 
-- Internal apps can only use `makemigrations` action. For preview/upgrade/downgrade, use unified commands (`fastappkit migrate preview/upgrade/downgrade`).
-- External apps cannot use `makemigrations` from the core project. Migrations must be created in the external app's own directory using `alembic` directly.
+-   Internal apps can only use `makemigrations` action. For preview/upgrade/downgrade, use unified commands (`fastappkit migrate preview/upgrade/downgrade`).
+-   External apps cannot use `makemigrations` from the core project. Migrations must be created in the external app's own directory using `alembic` directly.
 
 **Error Scenarios:**
 
-- If external app has no migration files, the command will fail with instructions on how to create migrations independently.
-- If revision is not found, the command will fail with helpful error messages.
-- If app is not found in registry, the command will fail with app name error.
+-   If external app has no migration files, the command will fail with instructions on how to create migrations independently.
+-   If revision is not found, the command will fail with helpful error messages.
+-   If app is not found in registry, the command will fail with app name error.
 
 **Examples:**
 
@@ -255,7 +259,7 @@ fastappkit migrate preview [--revision <rev>]
 
 **Options:**
 
-- `--revision, -r <rev>`: Specific revision (default: `head`)
+-   `--revision, -r <rev>`: Specific revision (default: `head`)
 
 **Note:** This command must be run from the project root directory.
 
@@ -278,7 +282,7 @@ fastappkit migrate upgrade [--revision <rev>]
 
 **Options:**
 
-- `--revision, -r <rev>`: Specific revision (default: `head`)
+-   `--revision, -r <rev>`: Specific revision (default: `head`)
 
 **Note:** This command must be run from the project root directory.
 
@@ -301,7 +305,7 @@ fastappkit migrate downgrade <revision>
 
 **Arguments:**
 
-- `<revision>`: Revision to downgrade to (required)
+-   `<revision>`: Revision to downgrade to (required)
 
 **Note:** This command must be run from the project root directory.
 
@@ -337,22 +341,22 @@ fastappkit migrate all
 
 ## Command Reference Table
 
-| Command | Description | Options |
-|---------|-------------|---------|
-| `fastappkit core new <name>` | Create new project | `--project-root`, `--description` |
-| `fastappkit core dev` | Run development server | `--host`, `--port`, `--reload`, `--verbose`, `--debug`, `--quiet` |
-| `fastappkit app new <name>` | Create internal app | `--as-package` |
-| `fastappkit app list` | List all apps | `--verbose`, `--debug`, `--quiet` |
-| `fastappkit app validate <name>` | Validate app | `--json` |
-| `fastappkit migrate core` | Core migrations | `-m, --message` |
-| `fastappkit migrate app <name>` | App migrations | `makemigrations`, `upgrade`, `downgrade`, `preview` |
-| `fastappkit migrate preview` | Preview SQL | `--revision` |
-| `fastappkit migrate upgrade` | Upgrade migrations | `--revision` |
-| `fastappkit migrate downgrade <rev>` | Downgrade migrations | (revision required) |
-| `fastappkit migrate all` | Apply all migrations | (no options) |
+| Command                              | Description            | Options                                                                                     |
+| ------------------------------------ | ---------------------- | ------------------------------------------------------------------------------------------- |
+| `fastappkit core new <name>`         | Create new project     | `--project-root`, `--description`                                                           |
+| `fastappkit core dev`                | Run development server | `--host`, `--port`, `--reload`, `--verbose`, `--debug`, `--quiet`, plus any uvicorn options |
+| `fastappkit app new <name>`          | Create internal app    | `--as-package`                                                                              |
+| `fastappkit app list`                | List all apps          | `--verbose`, `--debug`, `--quiet`                                                           |
+| `fastappkit app validate <name>`     | Validate app           | `--json`                                                                                    |
+| `fastappkit migrate core`            | Core migrations        | `-m, --message`                                                                             |
+| `fastappkit migrate app <name>`      | App migrations         | `makemigrations`, `upgrade`, `downgrade`, `preview`                                         |
+| `fastappkit migrate preview`         | Preview SQL            | `--revision`                                                                                |
+| `fastappkit migrate upgrade`         | Upgrade migrations     | `--revision`                                                                                |
+| `fastappkit migrate downgrade <rev>` | Downgrade migrations   | (revision required)                                                                         |
+| `fastappkit migrate all`             | Apply all migrations   | (no options)                                                                                |
 
 ## Learn More
 
-- [Creating Projects](../guides/creating-projects.md) - Project creation guide
-- [Creating Apps](../guides/creating-apps.md) - App creation guide
-- [Migrations](../guides/migrations.md) - Migration workflows
+-   [Creating Projects](../guides/creating-projects.md) - Project creation guide
+-   [Creating Apps](../guides/creating-apps.md) - App creation guide
+-   [Migrations](../guides/migrations.md) - Migration workflows
diff --git a/docs/reference/configuration-reference.md b/docs/reference/configuration-reference.md
index c03d411..60d5780 100644
--- a/docs/reference/configuration-reference.md
+++ b/docs/reference/configuration-reference.md
@@ -19,8 +19,8 @@ apps = [
 
 ### App Entry Formats
 
-- `apps.<name>` → Internal app (located in `./apps/<name>/`)
-- `<package_name>` → External app (pip-installed package, must be importable)
+-   `apps.<name>` → Internal app (located in `./apps/<name>/`)
+-   `<package_name>` → External app (pip-installed package, must be importable)
 
 ### Migration Order
 
@@ -40,29 +40,48 @@ Settings are defined in `core/config.py` using Pydantic's `BaseSettings`.
 ### Basic Settings
 
 ```python
+from pydantic import Field
 from pydantic_settings import BaseSettings, SettingsConfigDict
 
 class Settings(BaseSettings):
-    DATABASE_URL: str = "sqlite:///./app.db"
-    DEBUG: bool = False
+    database_url: str = Field(
+        default="sqlite:///./app.db",
+        alias="DATABASE_URL"
+    )
+    debug: bool = Field(
+        default=False,
+        alias="DEBUG"
+    )
 
     model_config = SettingsConfigDict(
         env_file=".env",
-        env_file_encoding="utf-8"
+        env_file_encoding="utf-8",
+        populate_by_name=True
     )
 ```
 
 ### Extended Settings
 
 ```python
+from pydantic import Field
+
 class Settings(BaseSettings):
-    DATABASE_URL: str = "sqlite:///./app.db"
-    DEBUG: bool = False
+    database_url: str = Field(
+        default="sqlite:///./app.db",
+        alias="DATABASE_URL"
+    )
+    debug: bool = Field(
+        default=False,
+        alias="DEBUG"
+    )
 
     # Custom settings
-    SECRET_KEY: str = "change-me-in-production"
-    HOST: str = "127.0.0.1"
-    PORT: int = 8000
+    secret_key: str = Field(
+        default="change-me-in-production",
+        alias="SECRET_KEY"
+    )
+    host: str = Field(default="127.0.0.1", alias="HOST")
+    port: int = Field(default=8000, alias="PORT")
 
     # Nested settings
     class DatabaseConfig(BaseSettings):
@@ -75,7 +94,7 @@ class Settings(BaseSettings):
     model_config = SettingsConfigDict(
         env_file=".env",
         env_file_encoding="utf-8",
-        case_sensitive=True,
+        populate_by_name=True,
         extra="ignore",
     )
 ```
@@ -84,10 +103,10 @@ class Settings(BaseSettings):
 
 **BaseSettings Configuration:**
 
-- `env_file`: Path to `.env` file (default: `.env`)
-- `env_file_encoding`: Encoding for `.env` file (default: `utf-8`)
-- `case_sensitive`: Whether environment variable names are case-sensitive (default: `False`)
-- `extra`: How to handle extra fields (`"ignore"`, `"forbid"`, `"allow"`)
+-   `env_file`: Path to `.env` file (default: `.env`)
+-   `env_file_encoding`: Encoding for `.env` file (default: `utf-8`)
+-   `case_sensitive`: Whether environment variable names are case-sensitive (default: `False`)
+-   `extra`: How to handle extra fields (`"ignore"`, `"forbid"`, `"allow"`)
 
 ### Environment Variables
 
@@ -112,5 +131,5 @@ See the [Manifest Reference](manifest-reference.md) for complete details.
 
 ## Learn More
 
-- [Configuration Guide](../guides/configuration.md) - Configuration guide
-- [Manifest Reference](manifest-reference.md) - External app manifest schema
+-   [Configuration Guide](../guides/configuration.md) - Configuration guide
+-   [Manifest Reference](manifest-reference.md) - External app manifest schema
diff --git a/fastappkit/cli/core.py b/fastappkit/cli/core.py
index 2f0400d..4e0c8f2 100644
--- a/fastappkit/cli/core.py
+++ b/fastappkit/cli/core.py
@@ -8,6 +8,7 @@
 import sys
 import traceback
 from pathlib import Path
+from typing import Any
 
 import typer
 import uvicorn
@@ -122,8 +123,9 @@ def new(
         raise typer.Exit(1)
 
 
-@app.command()
+@app.command(context_settings={"allow_extra_args": True, "ignore_unknown_options": True})
 def dev(
+    ctx: typer.Context,
     host: str = typer.Option("127.0.0.1", "--host", "-h", help="Host to bind to"),
     port: int = typer.Option(8000, "--port", "-p", help="Port to bind to"),
     reload: bool = typer.Option(False, "--reload", help="Enable auto-reload"),
@@ -131,7 +133,14 @@ def dev(
     debug: bool = typer.Option(False, "--debug", help="Enable debug output"),
     quiet: bool = typer.Option(False, "--quiet", "-q", help="Suppress output"),
 ) -> None:
-    """Run development server. Must be run from project root."""
+    """Run development server. Must be run from project root.
+
+    All additional arguments are forwarded to uvicorn.
+    Examples:
+        fastappkit core dev --workers 4
+        fastappkit core dev --log-level debug
+        fastappkit core dev --access-log
+    """
     # Override output level if flags are provided at command level
     if quiet or verbose or debug:
         if quiet:
@@ -152,9 +161,23 @@ def dev(
         # This will execute core.app which initializes FastAppKit with Settings
         ensure_settings_loaded(project_root)
 
+        # Parse remaining arguments and convert to uvicorn kwargs
+        uvicorn_kwargs = _parse_uvicorn_args(ctx.args, host=host, port=port, reload=reload)
+
+        # Determine log level based on output level
+        if output.level.value >= 3:  # debug
+            uvicorn_kwargs.setdefault("log_level", "debug")
+        elif output.level.value >= 2:  # verbose
+            uvicorn_kwargs.setdefault("log_level", "info")
+        else:
+            uvicorn_kwargs.setdefault("log_level", "warning")
+
         # Run uvicorn
-        output.success(f"Starting development server on http://{host}:{port}")
-        if reload:
+        display_host = uvicorn_kwargs.get("host", host)
+        display_port = uvicorn_kwargs.get("port", port)
+        output.success(f"Starting development server on http://{display_host}:{display_port}")
+
+        if uvicorn_kwargs.get("reload"):
             output.info("Auto-reload enabled")
             # For reload to work, uvicorn needs an import string, not an app object
             # Ensure project root is on sys.path so Python can import main module
@@ -162,27 +185,15 @@ def dev(
                 sys.path.insert(0, str(project_root))
 
             # Use import string for reload (main:app imports core.app which sets up app)
-            uvicorn.run(
-                "main:app",  # Import string: module "main", variable "app"
-                host=host,
-                port=port,
-                reload=reload,
-                log_level="info" if output.level.value >= 2 else "warning",
-            )
+            uvicorn.run("main:app", **uvicorn_kwargs)
         else:
             # Without reload, import main:app to get the app object
             if str(project_root) not in sys.path:
                 sys.path.insert(0, str(project_root))
 
-            from main import app as fastapi_app  # type: ignore[import-not-found]
+            from main import app as fastapi_app
 
-            uvicorn.run(
-                fastapi_app,
-                host=host,
-                port=port,
-                reload=reload,
-                log_level="info" if output.level.value >= 2 else "warning",
-            )
+            uvicorn.run(fastapi_app, **uvicorn_kwargs)
     except ConfigError as e:
         output.error(f"Configuration error: {e}")
         raise typer.Exit(1)
@@ -191,3 +202,76 @@ def dev(
         if output.level.value >= 3:  # debug level
             traceback.print_exc()
         raise typer.Exit(1)
+
+
+def _parse_uvicorn_args(args: list[str], host: str, port: int, reload: bool) -> dict[str, Any]:
+    """
+    Parse command-line arguments and convert them to uvicorn kwargs.
+
+    Args:
+        args: Remaining command-line arguments
+        host: Default host value
+        port: Default port value
+        reload: Default reload value
+
+    Returns:
+        Dictionary of uvicorn kwargs
+    """
+    kwargs: dict[str, object] = {
+        "host": host,
+        "port": port,
+        "reload": reload,
+    }
+
+    i = 0
+    while i < len(args):
+        arg = args[i]
+
+        # Handle --flag (boolean flags)
+        if arg.startswith("--") and "=" not in arg:
+            flag_name = arg[2:].replace("-", "_")
+
+            # Check if next arg is a value (not another flag)
+            if i + 1 < len(args) and not args[i + 1].startswith("-"):
+                value = args[i + 1]
+                # Try to convert to appropriate type
+                if value.lower() in ("true", "1", "yes", "on"):
+                    kwargs[flag_name] = True
+                elif value.lower() in ("false", "0", "no", "off"):
+                    kwargs[flag_name] = False
+                elif value.isdigit():
+                    kwargs[flag_name] = int(value)
+                else:
+                    kwargs[flag_name] = value
+                i += 2
+            else:
+                # Boolean flag (presence means True)
+                kwargs[flag_name] = True
+                i += 1
+
+        # Handle --flag=value
+        elif arg.startswith("--") and "=" in arg:
+            flag_part, value_part = arg[2:].split("=", 1)
+            flag_name = flag_part.replace("-", "_")
+
+            # Try to convert to appropriate type
+            if value_part.lower() in ("true", "1", "yes", "on"):
+                kwargs[flag_name] = True
+            elif value_part.lower() in ("false", "0", "no", "off"):
+                kwargs[flag_name] = False
+            elif value_part.isdigit():
+                kwargs[flag_name] = int(value_part)
+            else:
+                kwargs[flag_name] = value_part
+            i += 1
+
+        # Handle -f (short flags)
+        elif arg.startswith("-") and not arg.startswith("--") and len(arg) > 1:
+            # Short flags are typically single character, skip for now
+            # (uvicorn mostly uses long-form flags)
+            i += 1
+        else:
+            # Unknown argument, skip
+            i += 1
+
+    return kwargs
diff --git a/fastappkit/cli/templates/app/internal/migrations/env.py.j2 b/fastappkit/cli/templates/app/internal/migrations/env.py.j2
index 751901d..0b22f68 100644
--- a/fastappkit/cli/templates/app/internal/migrations/env.py.j2
+++ b/fastappkit/cli/templates/app/internal/migrations/env.py.j2
@@ -27,7 +27,12 @@ settings = Settings()
 config = context.config
 
 # Set database URL from settings
-config.set_main_option("sqlalchemy.url", settings.DATABASE_URL)
+# Strip async drivers (e.g., +asyncpg, +aiosqlite) since Alembic doesn't support async
+database_url = settings.database_url
+# Remove common async driver suffixes
+for async_driver in ["+asyncpg", "+aiosqlite", "+asyncmy"]:
+    database_url = database_url.replace(async_driver, "")
+config.set_main_option("sqlalchemy.url", database_url)
 
 # Interpret the config file for Python logging
 if config.config_file_name is not None:
diff --git a/fastappkit/cli/templates/project/core/config.py.j2 b/fastappkit/cli/templates/project/core/config.py.j2
index c56a820..c68e7fb 100644
--- a/fastappkit/cli/templates/project/core/config.py.j2
+++ b/fastappkit/cli/templates/project/core/config.py.j2
@@ -4,6 +4,7 @@ Settings configuration for {{ project_name }}.
 Uses pydantic-settings to load from .env file.
 """
 
+from pydantic import Field
 from pydantic_settings import BaseSettings, SettingsConfigDict
 
 
@@ -14,10 +15,17 @@ class Settings(BaseSettings):
     Loads from .env file automatically.
     """
 
-    DATABASE_URL: str = "sqlite:///./{{ project_name }}.db"
-    DEBUG: bool = False
+    database_url: str = Field(
+        default="sqlite:///./{{ project_name }}.db",
+        alias="DATABASE_URL"
+    )
+    debug: bool = Field(
+        default=False,
+        alias="DEBUG"
+    )
 
     model_config = SettingsConfigDict(
         env_file=".env",
-        env_file_encoding="utf-8"
+        env_file_encoding="utf-8",
+        populate_by_name=True
     )
diff --git a/fastappkit/cli/templates/project/core/db/migrations/env.py.j2 b/fastappkit/cli/templates/project/core/db/migrations/env.py.j2
index def0623..0c10bd7 100644
--- a/fastappkit/cli/templates/project/core/db/migrations/env.py.j2
+++ b/fastappkit/cli/templates/project/core/db/migrations/env.py.j2
@@ -38,7 +38,12 @@ if target_metadata is None:
         target_metadata = MetaData()
 
 # Set database URL from settings
-config.set_main_option("sqlalchemy.url", settings.DATABASE_URL)
+# Strip async drivers (e.g., +asyncpg, +aiosqlite) since Alembic doesn't support async
+database_url = settings.database_url
+# Remove common async driver suffixes
+for async_driver in ["+asyncpg", "+aiosqlite", "+asyncmy"]:
+    database_url = database_url.replace(async_driver, "")
+config.set_main_option("sqlalchemy.url", database_url)
 
 # Interpret the config file for Python logging
 if config.config_file_name is not None:
diff --git a/fastappkit/conf/protocol.py b/fastappkit/conf/protocol.py
index 664aacc..3a6bf62 100644
--- a/fastappkit/conf/protocol.py
+++ b/fastappkit/conf/protocol.py
@@ -18,7 +18,7 @@ class SettingsProtocol(Protocol):
     """
 
     # Database configuration
-    DATABASE_URL: str
+    database_url: str
 
     # Application settings
-    DEBUG: bool
+    debug: bool
diff --git a/fastappkit/core/kit.py b/fastappkit/core/kit.py
index 9fbe99b..8627abd 100644
--- a/fastappkit/core/kit.py
+++ b/fastappkit/core/kit.py
@@ -50,7 +50,7 @@ def create_app(self) -> FastAPI:
         """
         app = FastAPI(
             title="FastAppKit Application",
-            debug=self.settings.DEBUG,
+            debug=self.settings.debug,
         )
 
         # Load apps
diff --git a/fastappkit/migrations/context.py b/fastappkit/migrations/context.py
index c85dc8d..f0fe9a4 100644
--- a/fastappkit/migrations/context.py
+++ b/fastappkit/migrations/context.py
@@ -120,7 +120,12 @@ def build_alembic_config(
         # External apps have their own isolated migration directories
 
         # Set database URL from settings (core project's database)
+        # Strip async drivers (e.g., +asyncpg, +aiosqlite) since Alembic doesn't support async
         settings = get_settings()
-        alembic_cfg.set_main_option("sqlalchemy.url", settings.DATABASE_URL)
+        database_url = settings.database_url
+        # Remove common async driver suffixes
+        for async_driver in ["+asyncpg", "+aiosqlite", "+asyncmy"]:
+            database_url = database_url.replace(async_driver, "")
+        alembic_cfg.set_main_option("sqlalchemy.url", database_url)
 
         return alembic_cfg
diff --git a/fastappkit/migrations/runner.py b/fastappkit/migrations/runner.py
index 774ad7e..02450fd 100644
--- a/fastappkit/migrations/runner.py
+++ b/fastappkit/migrations/runner.py
@@ -30,7 +30,7 @@ def __init__(self) -> None:
 
     def _get_engine(self) -> Engine:
         """Get SQLAlchemy engine from settings."""
-        return create_engine(self.settings.DATABASE_URL)
+        return create_engine(self.settings.database_url)
 
     def upgrade(
         self,
diff --git a/tests/conftest.py b/tests/conftest.py
index 70e9f2b..dd8cd93 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -9,6 +9,7 @@
 
 import pytest
 from fastapi.testclient import TestClient
+from pydantic import Field
 from pydantic_settings import BaseSettings, SettingsConfigDict
 
 from fastappkit.conf import set_settings
@@ -18,14 +19,14 @@
 class TestSettings(BaseSettings):
     """Test settings class that implements SettingsProtocol."""
 
-    DATABASE_URL: str = "sqlite:///:memory:"
-    DEBUG: bool = True
+    database_url: str = Field(default="sqlite:///:memory:")
+    debug: bool = Field(default=True)
     SECRET_KEY: str = "test-secret-key"
     HOST: str = "127.0.0.1"
     PORT: int = 8000
     RELOAD: bool = False
 
-    model_config = SettingsConfigDict(env_file=".env", extra="ignore")
+    model_config = SettingsConfigDict(env_file=".env", extra="ignore", populate_by_name=True)
 
 
 @pytest.fixture
@@ -71,8 +72,8 @@ def test_settings() -> TestSettings:
         TestSettings instance for testing
     """
     return TestSettings(
-        DATABASE_URL="sqlite:///:memory:",
-        DEBUG=True,
+        database_url="sqlite:///:memory:",
+        debug=True,
     )
 
 
diff --git a/tests/integration/test_cli/test_migrate_commands.py b/tests/integration/test_cli/test_migrate_commands.py
index efbd545..359e230 100644
--- a/tests/integration/test_cli/test_migrate_commands.py
+++ b/tests/integration/test_cli/test_migrate_commands.py
@@ -65,7 +65,7 @@ def downgrade():
 
 config = context.config
 settings = get_settings()
-config.set_main_option("sqlalchemy.url", settings.DATABASE_URL)
+config.set_main_option("sqlalchemy.url", settings.database_url)
 config.set_main_option("version_table", "alembic_version")
 
 target_metadata = MetaData()
@@ -85,7 +85,7 @@ def run_migrations_offline():
 def run_migrations_online():
     """Run migrations in 'online' mode."""
     connectable = engine_from_config(
-        {"sqlalchemy.url": settings.DATABASE_URL},
+        {"sqlalchemy.url": settings.database_url},
         prefix="sqlalchemy.",
         poolclass=None,
     )
diff --git a/tests/unit/test_core/test_kit.py b/tests/unit/test_core/test_kit.py
index 9c15392..512e3f3 100644
--- a/tests/unit/test_core/test_kit.py
+++ b/tests/unit/test_core/test_kit.py
@@ -53,7 +53,7 @@ def test_create_app_creates_fastapi_instance(
 
             assert isinstance(app, FastAPI)
             assert app.title == "FastAppKit Application"
-            assert app.debug == test_settings.DEBUG
+            assert app.debug == test_settings.debug
         finally:
             os.chdir(original_cwd)
 
diff --git a/tests/unit/test_migrations/test_runner.py b/tests/unit/test_migrations/test_runner.py
index b7e0cf6..9e689ad 100644
--- a/tests/unit/test_migrations/test_runner.py
+++ b/tests/unit/test_migrations/test_runner.py
@@ -27,7 +27,7 @@ def test_upgrade_requires_valid_migration_path(
         self, temp_project: Path, test_settings: TestSettings
     ) -> None:
         """upgrade() requires valid migration path."""
-        test_settings.DATABASE_URL = "sqlite:///:memory:"
+        test_settings.database_url = "sqlite:///:memory:"
         set_settings(test_settings)
 
         # Create app metadata without migrations_path
@@ -47,7 +47,7 @@ def test_get_current_revision_handles_missing_migrations_path(
         self, temp_project: Path, test_settings: TestSettings
     ) -> None:
         """get_current_revision() handles missing migrations path gracefully."""
-        test_settings.DATABASE_URL = "sqlite:///:memory:"
+        test_settings.database_url = "sqlite:///:memory:"
         set_settings(test_settings)
 
         # Create app metadata with invalid migrations_path
@@ -68,7 +68,7 @@ def test_upgrade_raises_error_on_invalid_migration(
         self, temp_project: Path, test_settings: TestSettings
     ) -> None:
         """upgrade() raises MigrationError on invalid migration."""
-        test_settings.DATABASE_URL = "sqlite:///:memory:"
+        test_settings.database_url = "sqlite:///:memory:"
         set_settings(test_settings)
 
         migrations_path = temp_project / "migrations"
@@ -96,14 +96,14 @@ def downgrade():
 
 config = context.config
 settings = get_settings()
-config.set_main_option("sqlalchemy.url", settings.DATABASE_URL)
+config.set_main_option("sqlalchemy.url", settings.database_url)
 config.set_main_option("version_table", "alembic_version")
 
 target_metadata = None
 
 def run_migrations_online():
     connectable = engine_from_config(
-        {"sqlalchemy.url": settings.DATABASE_URL},
+        {"sqlalchemy.url": settings.database_url},
         prefix="sqlalchemy.",
         poolclass=None,
     )