Analysis finds MCP SDK tops LLM SDK imports in new PyPI packages
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An analysis published by py-code.org finds that among 335,167 PyPI projects whose latest release fell between 13 November 2025 and 13 November 2026, the MCP Python SDK is imported by 20,013 — more than any single LLM SDK, with openai at 12,096. Overall, 22,563 projects (6.7%) import at least one of six LLM SDKs, peaking at 8.4% in April 2026. Of the MCP users, 17,329 import mcp.server, which the analysis reads as most of them being servers exposing tools rather than LLM callers. Separately, across all 354,763 indexed projects, requests leads httpx 45,752 to 41,112, and 23,696 projects use only pydantic v2 validators versus 465 using only v1. The HTTP and pydantic comparisons cover the full index, not just the new-release set. Download counts exist only for the 60,000 most downloaded projects, with the rest counted as zero, so that measure reflects large, established packages.
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- Hacker News · AIpy-code.org analysis: MCP SDK imported by 20,013 new PyPI packages, ahead of openai's 12,096
An analysis of 335,167 PyPI projects with a release between 13 November 2025 and 13 November 2026 finds the MCP Python SDK imported by 20,013 of them, more than any single LLM SDK, with openai at 12,096. Overall 22,563 projects, or 6.7%, import at least one of six LLM SDKs, peaking at 8.4% in April 2026, and 17,329 of the MCP users import mcp.server, indicating most are servers exposing tools rather than LLM callers. Across all 354,763 indexed projects, requests leads httpx 45,752 to 41,112, and 23,696 projects use only pydantic v2 validators versus 465 using only v1.
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