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An Allow Rule for MCP Server 'a' Also Matched 'a__b'. How Claude Code's Names Collided

Source: DEV Community·

Summary

Before Claude Code 2.1.299, an allow rule for mcp__a also allowed servers named a__b and a_. Why the names collide, a test, and a grep for your settings.
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AIQB record IDintel-35f24f2583e6f5385f00896e