---
title: run
sidebarTitle: run
---

# `fastmcp.cli.run`


FastMCP run command implementation with enhanced type hints.

## Functions

### `is_url` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/cli/run.py#L83" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
is_url(path: str) -> bool
```


Check if a string is a URL.


### `create_client_server` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/cli/run.py#L89" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
create_client_server(url: str) -> Any
```


Create a FastMCP server from a client URL.

**Args:**
- `url`: The URL to connect to

**Returns:**
- A FastMCP server instance


### `create_mcp_config_server` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/cli/run.py#L109" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
create_mcp_config_server(mcp_config_path: Path) -> FastMCP[None]
```


Create a FastMCP server from a MCPConfig.


### `load_mcp_server_config` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/cli/run.py#L118" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
load_mcp_server_config(config_path: Path) -> MCPServerConfig
```


Load a FastMCP configuration from a fastmcp.json file.

**Args:**
- `config_path`: Path to fastmcp.json file

**Returns:**
- MCPServerConfig object


### `run_command` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/cli/run.py#L135" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
run_command(server_spec: str, transport: TransportType | None = None, host: str | None = None, port: int | None = None, path: str | None = None, log_level: LogLevelType | None = None, server_args: list[str] | None = None, show_banner: bool = True, use_direct_import: bool = False, skip_source: bool = False, stateless: bool = False) -> None
```


Run a MCP server or connect to a remote one.

**Args:**
- `server_spec`: Python file, object specification (file\:obj), config file, or URL
- `transport`: Transport protocol to use
- `host`: Host to bind to when using http transport
- `port`: Port to bind to when using http transport
- `path`: Path to bind to when using http transport
- `log_level`: Log level
- `server_args`: Additional arguments to pass to the server
- `show_banner`: Whether to show the server banner
- `use_direct_import`: Whether to use direct import instead of subprocess
- `skip_source`: Whether to skip source preparation step
- `stateless`: Whether to run in stateless mode (no session)


### `run_module_command` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/cli/run.py#L260" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
run_module_command(module_name: str) -> None
```


Run a Python module directly using ``python -m <module>``.

When ``-m`` is used, the module manages its own server startup.
No server-object discovery or transport overrides are applied.

**Args:**
- `module_name`: Dotted module name (e.g. ``my_package``).
- `env_command_builder`: An optional callable that wraps a command list
with environment setup (e.g. ``UVEnvironment.build_command``).
- `extra_args`: Extra arguments forwarded after the module name.


### `run_v1_server_async` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/cli/run.py#L299" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
run_v1_server_async(server: FastMCP1x, host: str | None = None, port: int | None = None, transport: TransportType | None = None) -> None
```


Run a FastMCP 1.x server using async methods.

**Args:**
- `server`: FastMCP 1.x server instance
- `host`: Host to bind to
- `port`: Port to bind to
- `transport`: Transport protocol to use


### `run_with_reload` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/cli/run.py#L364" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
run_with_reload(cmd: list[str], reload_dirs: list[Path] | None = None, is_stdio: bool = False) -> None
```


Run a command with file watching and auto-reload.

**Args:**
- `cmd`: Command to run as subprocess (should include --no-reload)
- `reload_dirs`: Directories to watch for changes (default\: cwd)
- `is_stdio`: Whether this is stdio transport

