# unknown-tool-skill > Use when testing unknown tool validation - Author: Avi Fenesh - Repository: avifenesh/agnix - Version: 20260201064558 - Stars: 6 - Forks: 0 - Last Updated: 2026-02-06 - Source: https://github.com/avifenesh/agnix - Web: https://mule.run/skillshub/@@avifenesh/agnix~unknown-tool-skill:20260201064558 --- --- name: unknown-tool-skill description: Use when testing unknown tool validation allowed-tools: Read Write FakeTool UnknownTool --- This skill references unknown tools. Tools must be known Claude Code tools: Bash, Read, Write, Edit, Grep, Glob, Task, etc.