Expired65% confidenceFactExact time
FastMCP uses the @mcp.tool decorator to register Python functions as tools, automatically generating tool description objects that comply with the JSON Schema Draft 7 specification.
3
Sources
65%
Confidence
Medium-term (~90 days)
Relevance
7/18/2026
First Seen
This claim has expired. It is kept for the record and no longer describes the current state.
Valid until: 10/16/2026(expired)
Sources
Related Claims
UnverifiedFastMCP 在底层借助 Pydantic 库，利用 Python 类型注解自动将函数签名转换为符合 JSON Schema 规范的参数描述81% similarUnverifiedThe MCP Python SDK uses Python's type annotations and Pydantic's Field descriptors to automatically generate specification-compliant JSON Schema via reflection mechanisms.79% similarUnverifiedPydanticAI uses Python type annotations to automatically parse and validate tool parameters, so developers do not need to manually write JSON Schema descriptions for tool signatures.78% similarUnverifiedIn LangChain, using the @tool decorator is all that is needed to register a Python function as a callable tool.76% similarUnverifiedFastMCP is a Python library heavily influenced by FastAPI's design philosophy, automatically generating interface specifications through decorators and type hints.73% similar
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