> ## Documentation Index
> Fetch the complete documentation index at: https://fastmcp-docs-v3-beta2-feature-tracking.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# cli

# `fastmcp.utilities.cli`

## Functions

### `is_already_in_uv_subprocess` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/utilities/cli.py#L28" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python theme={null}
is_already_in_uv_subprocess() -> bool
```

Check if we're already running in a FastMCP uv subprocess.

### `load_and_merge_config` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/utilities/cli.py#L33" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python theme={null}
load_and_merge_config(server_spec: str | None, **cli_overrides) -> tuple[MCPServerConfig, str]
```

Load config from server\_spec and apply CLI overrides.

This consolidates the config parsing logic that was duplicated across
run, inspect, and dev commands.

**Args:**

* `server_spec`: Python file, config file, URL, or None to auto-detect
* `cli_overrides`: CLI arguments that override config values

**Returns:**

* Tuple of (MCPServerConfig, resolved\_server\_spec)

### `log_server_banner` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/utilities/cli.py#L201" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python theme={null}
log_server_banner(server: FastMCP[Any]) -> None
```

Creates and logs a formatted banner with server information and logo.