diff --git a/src/plyngent/__init__.py b/src/plyngent/__init__.py
index bc710a2..54599e0 100644
--- a/src/plyngent/__init__.py
+++ b/src/plyngent/__init__.py
@@ -1,4 +1,5 @@
 from . import agent as agent
+from . import cli as cli
 from . import config as config
 from . import memory as memory
 from . import runtime as runtime
diff --git a/src/plyngent/__main__.py b/src/plyngent/__main__.py
new file mode 100644
index 0000000..5622ba8
--- /dev/null
+++ b/src/plyngent/__main__.py
@@ -0,0 +1,4 @@
+from plyngent.cli.app import main
+
+if __name__ == "__main__":
+    main()
diff --git a/src/plyngent/cli/__init__.py b/src/plyngent/cli/__init__.py
new file mode 100644
index 0000000..af8fcbb
--- /dev/null
+++ b/src/plyngent/cli/__init__.py
@@ -0,0 +1 @@
+from .app import main as main
diff --git a/src/plyngent/cli/__main__.py b/src/plyngent/cli/__main__.py
new file mode 100644
index 0000000..5622ba8
--- /dev/null
+++ b/src/plyngent/cli/__main__.py
@@ -0,0 +1,4 @@
+from plyngent.cli.app import main
+
+if __name__ == "__main__":
+    main()
diff --git a/src/plyngent/cli/app.py b/src/plyngent/cli/app.py
new file mode 100644
index 0000000..1a42807
--- /dev/null
+++ b/src/plyngent/cli/app.py
@@ -0,0 +1,141 @@
+from __future__ import annotations
+
+import asyncio
+from pathlib import Path
+from typing import TYPE_CHECKING
+
+import click
+import msgspec
+
+from plyngent import config as config_mod
+from plyngent.cli.repl import run_repl
+from plyngent.cli.selection import select_model, select_provider
+from plyngent.cli.state import ReplState
+from plyngent.config.models import DatabaseConfig
+from plyngent.memory import MemoryStore
+from plyngent.runtime import ProviderNotSupportedError, create_client
+from plyngent.tools import set_workspace_root
+
+if TYPE_CHECKING:
+    from plyngent.config.store import ConfigStore
+
+
+def _load_config(config_path: Path | None) -> ConfigStore:
+    return config_mod.load(config_path)
+
+
+def _database_config(store: ConfigStore) -> DatabaseConfig:
+    return msgspec.convert(dict(store.database), DatabaseConfig)
+
+
+async def _run_chat(  # noqa: PLR0913
+    *,
+    config_path: Path | None,
+    provider_name: str | None,
+    model: str | None,
+    tools: bool,
+    workspace: Path,
+    session_id: int | None,
+) -> None:
+    store = _load_config(config_path)
+    if store.bad_providers:
+        names = ", ".join(sorted(store.bad_providers.keys()))
+        click.secho(f"warning: ignored bad providers: {names}", fg="yellow")
+
+    try:
+        pname, provider = select_provider(store.providers, preferred=provider_name)
+        model_id = select_model(provider, preferred=model)
+        _ = create_client(provider)  # fail early if unsupported
+    except ProviderNotSupportedError as exc:
+        raise click.ClickException(str(exc)) from exc
+
+    _ = set_workspace_root(workspace)
+    memory = await MemoryStore.open(_database_config(store))
+    try:
+        state = ReplState(
+            config=store,
+            memory=memory,
+            workspace=workspace,
+            provider_name=pname,
+            provider=provider,
+            model=model_id,
+            tools_enabled=tools,
+        )
+        if session_id is not None:
+            await state.resume_session(session_id)
+        else:
+            await state.new_session()
+        await run_repl(state)
+    finally:
+        await memory.close()
+
+
+@click.group(context_settings={"help_option_names": ["-h", "--help"]})
+@click.version_option(package_name="plyngent")
+def main() -> None:
+    """Plyngent — LLM chat and agent toolkit."""
+
+
+@main.command("chat")
+@click.option(
+    "--config",
+    "config_path",
+    type=click.Path(path_type=Path, dir_okay=False),
+    default=None,
+    help="Path to plyngent.toml (default: platform config dir).",
+)
+@click.option("--provider", "provider_name", default=None, help="Provider name from config.")
+@click.option("--model", default=None, help="Model id.")
+@click.option("--tools/--no-tools", default=True, show_default=True, help="Enable DEFAULT_TOOLS.")
+@click.option(
+    "--workspace",
+    type=click.Path(path_type=Path, file_okay=False, exists=True),
+    default=None,
+    help="Workspace root for tools (default: cwd).",
+)
+@click.option("--session", "session_id", type=int, default=None, help="Resume session id.")
+def chat_cmd(  # noqa: PLR0913
+    config_path: Path | None,
+    provider_name: str | None,
+    model: str | None,
+    tools: bool,  # noqa: FBT001
+    workspace: Path | None,
+    session_id: int | None,
+) -> None:
+    """Interactive chat REPL with optional tools and session memory."""
+    root = workspace if workspace is not None else Path.cwd()
+    asyncio.run(
+        _run_chat(
+            config_path=config_path,
+            provider_name=provider_name,
+            model=model,
+            tools=tools,
+            workspace=root,
+            session_id=session_id,
+        )
+    )
+
+
+@main.command("providers")
+@click.option(
+    "--config",
+    "config_path",
+    type=click.Path(path_type=Path, dir_okay=False),
+    default=None,
+    help="Path to plyngent.toml.",
+)
+def providers_cmd(config_path: Path | None) -> None:
+    """List configured providers."""
+    store = _load_config(config_path)
+    if not store.providers:
+        click.echo("(no providers)")
+    for name, provider in sorted(store.providers.items()):
+        tag = type(provider).__struct_config__.tag
+        models = ", ".join(sorted(provider.models.keys())) or "(none listed)"
+        click.echo(f"{name}\tpreset={tag}\tmodels={models}")
+    if store.bad_providers:
+        click.secho(f"bad: {', '.join(sorted(store.bad_providers.keys()))}", fg="yellow")
+
+
+if __name__ == "__main__":
+    main()