Verified80% confidenceFactTime unknown
在MCP出现之前，AI调用外部工具主要依赖OpenAI的Function Calling机制或各框架自定义的插件系统
11
Sources
80%
Confidence
Long-term
Relevance
6/1/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedBefore MCP emerged, the integration of large language models with external tools was highly fragmented, with OpenAI's Function Calling, LangChain's Tool framework, and various vendor plugin mechanisms being mutually incompatible.83% similarUnverifiedBefore MCP, the interaction between large models and external tools mainly relied on vendor-defined Function Calling mechanisms, with OpenAI and Google Gemini each having different function calling formats that were mutually incompatible.80% similar
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