Source: Schema.org v30.1 vocabulary. Official tool property definition.
What does tool mean?
A sub property of instrument. An object used (but not consumed) when performing instructions or a direction.
Parent properties
Used on types (domainIncludes)
Expected value types (rangeIncludes)
Schema.org domainIncludes and rangeIncludes are descriptive guidance, not strict validation prohibitions. Check the official reference for updates.
Related reference
Browse all Schema.org types and properties · Google feature support status