# Review Comment

- **Author:** coderabbitai[bot]
- **File:** `packages/providers/fal/text-to-video/fal_text_to_video/cli.py`
- **Line:** 52
- **Date:** 2026-02-06
- **Comment ID:** 2772348944
- **URL:** https://github.com/donghaozhang/video-agent-skill/pull/19#discussion_r2772348944

---

_⚠️ Potential issue_ | _🟠 Major_

<details>
<summary>🧩 Analysis chain</summary>

🏁 Script executed:

```shell
# First, let's verify the file exists and read the relevant section
find . -type f -path "*packages/providers/fal/text-to-video/fal_text_to_video/cli.py" 2>/dev/null
```

Repository: donghaozhang/video-agent-skill

Length of output: 137

---

🏁 Script executed:

```shell
# Read the cli.py file to see the actual code at lines 24-52
if [ -f "packages/providers/fal/text-to-video/fal_text_to_video/cli.py" ]; then
  wc -l "packages/providers/fal/text-to-video/fal_text_to_video/cli.py"
  echo "---"
  head -60 "packages/providers/fal/text-to-video/fal_text_to_video/cli.py" | cat -n
fi
```

Repository: donghaozhang/video-agent-skill

Length of output: 3020

---

🏁 Script executed:

```shell
# Read the rest of the cli.py file to identify all public functions
tail -n +60 "packages/providers/fal/text-to-video/fal_text_to_video/cli.py" | cat -n
```

Repository: donghaozhang/video-agent-skill

Length of output: 5329

---



</details>

**Add type hints and full Google‑style docstrings to all public CLI functions.**  
`cli()`, `generate()`, `list_models()`, `model_info()`, `estimate_cost()`, and `main()` are missing type hints and required docstring sections (Args/Returns/Cost/Example). Per coding guidelines, all public methods must include type hints and docstrings with Args, Returns, Cost information, and Example sections in Google style format.

<details>
<summary>✏️ Example pattern (apply to all public functions)</summary>

```diff
-@click.group(invoke_without_command=True)
-@click.pass_context
-def cli(ctx):
-    """FAL Text-to-Video Generation CLI."""
+@click.group(invoke_without_command=True)
+@click.pass_context
+def cli(ctx: click.Context) -> None:
+    """FAL Text-to-Video Generation CLI.
+
+    Entry point for the text-to-video CLI.
+
+    Args:
+        ctx (click.Context): Click context.
+
+    Returns:
+        None: CLI exits via Click.
+
+    Cost:
+        None.
+
+    Example:
+        $ fal-text-to-video --help
+    """
```
</details>

<details>
<summary>🤖 Prompt for AI Agents</summary>

```
In `@packages/providers/fal/text-to-video/fal_text_to_video/cli.py` around lines
24 - 52, All public CLI functions (cli, generate, list_models, model_info,
estimate_cost, main) must get explicit Python type hints (e.g., ctx:
click.Context -> None for cli; prompt: str, model: str, duration:
Optional[float] or Optional[str], aspect_ratio: str, resolution: str, output:
str, negative_prompt: Optional[str], cfg_scale: float, audio: bool, keep_remote:
bool, mock: bool -> None for generate) and full Google-style docstrings that
include Args, Returns, Cost (where applicable), and Example sections; update
each function signature to include the types and add a docstring block following
the Google style template describing parameters, return values, expected cost
info (for estimate_cost/model_info), and a short usage example. Ensure the
docstrings are on the public functions named cli(), generate(), list_models(),
model_info(), estimate_cost(), and main() and that the return type annotations
reflect that these are CLI entry points (returning None or an int for main).
```

</details>

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