PROBLEM

Lack of Granular Access Control in MCP Servers

MCP servers do not allow users to block specific tools, leading to an all-or-nothing approach

Updated: 4/1/2026

The tweet expresses a strong opinion that the lack of granular access control in MCP servers, where users cannot block specific tools, is a significant problem. This all-or-nothing approach is seen as the default behavior across popular MCP servers like Claude, Cursor, and ChatGPT.

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