Verified65% confidenceFactExact time
Before MCP emerged, major model vendors each implemented tool calling in their own way, forcing developers to rewrite all tool-calling code whenever the underlying model was changed.
3
Sources
65%
Confidence
Long-term
Relevance
8/13/2026
First Seen
Sources
MCP协议详解：AI工具调用的统一标准与实践指南
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