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Update README.md

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Jeremiah Lowin 2025-04-24 12:13:28 -04:00
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README.md
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@ -340,6 +340,7 @@ The below code requires the `pillow` library to be installed.
```python
from mcp.server.fastmcp import FastMCP, Image
from io import BytesIO
try:
from PIL import Image as PILImage
except ImportError:
@ -347,13 +348,14 @@ except ImportError:
mcp = FastMCP("My App")
@mcp.tool()
def create_thumbnail(image_path: str) -> Image:
"""Create a thumbnail from an image"""
img = PILImage.open(image_path)
img.thumbnail((100, 100))
return Image(data=img.tobytes(), format="png")
img.thumbnail((100, 100))
buffer = BytesIO()
img.save(buffer, format="PNG")
return Image(data=buffer.getvalue(), format="png")
```
Return the `Image` helper class from your tool to send an image to the client. The `Image` helper class handles the conversion to/from the base64-encoded format required by the MCP protocol. It works with either a path to an image file, or a bytes object.