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chore: import upstream snapshot with attribution
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---
title: cli
sidebarTitle: cli
---
# `fastmcp.utilities.cli`
## Functions
### `is_already_in_uv_subprocess` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/fastmcp_slim/fastmcp/utilities/cli.py#L28" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
```python
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/PrefectHQ/fastmcp/blob/main/fastmcp_slim/fastmcp/utilities/cli.py#L33" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
```python
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/PrefectHQ/fastmcp/blob/main/fastmcp_slim/fastmcp/utilities/cli.py#L201" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
```python
log_server_banner(server: FastMCP[Any]) -> None
```
Creates and logs a formatted banner with server information and logo.