MCP SDK Is Now the Most Imported AI Package in New PyPI Projects, Beating OpenAI's
Business-Feedback635 · reddit · 2026-11-15
py-code.org's import index across 335,167 PyPI projects with a release in the past year shows the MCP SDK has become the most imported AI SDK in new projects.
- mcp: 20,013 projects, ahead of openai (12,096), anthropic (7,718), langchain (6,721), google-genai (3,409), litellm (2,971), and ollama (1,252)
- The MCP SDK alone nearly matches the combined usage of all six LLM SDKs (22,563 projects, deduplicated)
- Other data points: 45,752 projects import requests; 23,696 use only pydantic v2 validators vs 465 still on v1
The numbers suggest MCP has become the de facto standard interface layer for the agent/tool-calling ecosystem.
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