02:17
2026-10-11
dev.to
ai-agents
Claude Code's hook matcher mcp__lab fired 0 times in 42 calls, though the same string worked as a permission rule
A developer's 14 headless test runs of Claude Code 2.1.289 found that a hook matcher of `mcp__lab` fired 0 times across 42 calls to that MCP server's tools, while `mcp__lab__.*` fired 42 of 42, even t…