diff --git a/src/codeguard/cli/__init__.py b/src/codeguard/cli/__init__.py
new file mode 100644
index 0000000..128ea02
--- /dev/null
+++ b/src/codeguard/cli/__init__.py
@@ -0,0 +1,202 @@
+"""CLI module for CodeGuard."""
+
+import sys
+from typing import Optional
+
+import click
+
+from codeguard.core.scanner import CodeScanner
+from codeguard.git.hooks import HookManager
+from codeguard.utils.config import ConfigLoader
+from codeguard.utils.output import OutputFormatter
+
+
+@click.group()
+@click.option(
+    "--ollama-url",
+    default="http://localhost:11434",
+    help="Ollama server URL",
+    envvar="CODEGUARD_OLLAMA_URL",
+)
+@click.option(
+    "--model",
+    default="codellama",
+    help="Ollama model to use",
+    envvar="CODEGUARD_MODEL",
+)
+@click.option(
+    "--timeout",
+    default=120,
+    help="Request timeout in seconds",
+    envvar="CODEGUARD_TIMEOUT",
+    type=int,
+)
+@click.option(
+    "--config",
+    default="codeguard.yaml",
+    help="Path to config file",
+    envvar="CODEGUARD_CONFIG",
+)
+@click.pass_context
+def main(
+    ctx: click.Context,
+    ollama_url: str,
+    model: str,
+    timeout: int,
+    config: str,
+) -> None:
+    """CodeGuard: Local LLM-based code security analysis."""
+    ctx.ensure_object(dict)
+    ctx.obj["ollama_url"] = ollama_url
+    ctx.obj["model"] = model
+    ctx.obj["timeout"] = timeout
+    ctx.obj["config"] = config
+
+
+@main.command()
+@click.option(
+    "--path",
+    default=".",
+    help="Path to scan",
+    type=click.Path(exists=True, file_okay=False, dir_okay=True),
+)
+@click.option(
+    "--output",
+    type=click.Choice(["text", "json"]),
+    default="text",
+    help="Output format",
+)
+@click.option(
+    "--fail-level",
+    type=click.Choice(["critical", "high", "medium", "low", "none"]),
+    default="none",
+    help="Exit with error if findings at or above this level",
+)
+@click.option(
+    "--include",
+    multiple=True,
+    help="File patterns to include",
+)
+@click.option(
+    "--exclude",
+    multiple=True,
+    help="File patterns to exclude",
+)
+@click.pass_context
+def scan(
+    ctx: click.Context,
+    path: str,
+    output: str,
+    fail_level: str,
+    include: tuple,
+    exclude: tuple,
+) -> None:
+    """Scan code for security vulnerabilities."""
+    config = ConfigLoader.load(ctx.obj["config"])
+    scanner = CodeScanner(
+        ollama_url=ctx.obj["ollama_url"],
+        model=ctx.obj["model"],
+        timeout=ctx.obj["timeout"],
+        config=config,
+    )
+    findings = scanner.scan(path, include=list(include), exclude=list(exclude))
+    OutputFormatter.print(findings, output_format=output)
+    if fail_level != "none":
+        severity_levels = ["low", "medium", "high", "critical"]
+        fail_index = severity_levels.index(fail_level)
+        for finding in findings:
+            if finding.severity.value in severity_levels[: fail_index + 1]:
+                sys.exit(1)
+
+
+@main.command()
+@click.option(
+    "--path",
+    default=".",
+    help="Path to git repository",
+    type=click.Path(exists=True, file_okay=False, dir_okay=True),
+)
+@click.option(
+    "--force",
+    is_flag=True,
+    help="Force reinstall existing hook",
+)
+def install_hook(path: str, force: bool) -> None:
+    """Install git pre-commit hook."""
+    manager = HookManager(path)
+    manager.install(force=force)
+    click.echo("Pre-commit hook installed successfully")
+
+
+@main.command()
+@click.argument(
+    "paths",
+    nargs=-1,
+    type=click.Path(exists=True),
+)
+@click.option(
+    "--output",
+    type=click.Choice(["text", "json"]),
+    default="text",
+    help="Output format",
+)
+@click.pass_context
+def check(
+    ctx: click.Context,
+    paths: tuple[str, ...],
+    output: str,
+) -> None:
+    """Check specific files for security issues."""
+    if not paths:
+        click.echo("No files specified", err=True)
+        sys.exit(1)
+    config = ConfigLoader.load(ctx.obj["config"])
+    scanner = CodeScanner(
+        ollama_url=ctx.obj["ollama_url"],
+        model=ctx.obj["model"],
+        timeout=ctx.obj["timeout"],
+        config=config,
+    )
+    findings = scanner.check_files(list(paths))
+    OutputFormatter.print(findings, output_format=output)
+
+
+@main.command()
+def version() -> None:
+    """Show version."""
+    from codeguard import __version__
+    click.echo(f"CodeGuard-CLI v{__version__}")
+
+
+@main.command()
+@click.option(
+    "--ollama-url",
+    default=None,
+    help="Ollama server URL",
+)
+@click.option(
+    "--model",
+    default=None,
+    help="Ollama model to use",
+)
+@click.option(
+    "--timeout",
+    default=None,
+    help="Request timeout in seconds",
+    type=int,
+)
+def status(ollama_url: Optional[str], model: Optional[str], timeout: Optional[str]) -> None:
+    """Check CodeGuard and Ollama status."""
+    from codeguard.llm.client import OllamaClient
+
+    url = ollama_url or "http://localhost:11434"
+    client = OllamaClient(url)
+
+    click.echo("Checking Ollama connection...")
+    if client.health_check():
+        click.secho("Ollama is running", fg="green")
+    else:
+        click.secho("Ollama is not accessible", fg="red")
+        return
+
+    click.echo(f"Available models: {', '.join(client.list_models())}")