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metadata_utils.py
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46 lines (37 loc) · 1.7 KB
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"""Utility functions for working with metadata in MCP types.
These utilities are primarily intended for client-side usage to properly display
human-readable names in user interfaces in a spec-compliant way.
"""
from mcp.types import Implementation, Prompt, Resource, ResourceTemplate, Tool
def get_display_name(obj: Tool | Resource | Prompt | ResourceTemplate | Implementation) -> str:
"""Get the display name for an MCP object with proper precedence.
This is a client-side utility function designed to help MCP clients display
human-readable names in their user interfaces. When servers provide a 'title'
field, it should be preferred over the programmatic 'name' field for display.
For tools: title > annotations.title > name
For other objects: title > name
Example:
```python
# In a client displaying available tools
tools = await session.list_tools()
for tool in tools.tools:
display_name = get_display_name(tool)
print(f"Available tool: {display_name}")
```
Args:
obj: An MCP object with name and optional title fields
Returns:
The display name to use for UI presentation
"""
if isinstance(obj, Tool):
# Tools have special precedence: title > annotations.title > name
if hasattr(obj, "title") and obj.title is not None:
return obj.title
if obj.annotations and hasattr(obj.annotations, "title") and obj.annotations.title is not None:
return obj.annotations.title
return obj.name
else:
# All other objects: title > name
if hasattr(obj, "title") and obj.title is not None:
return obj.title
return obj.name