# 2026-06-14-completed-specs-archive/tool-type-single-interface
dir: 2026-06-14-completed-specs-archive/tool-type-single-interface

index: 2026-06-14-completed-specs-archive/tool-type-single-interface/.pi-map.index.md

## role
Defines specifications for a tool type system that enforces single interface constraints, validates allowed values, and handles legacy data migration.
## files
- spec.md | Defines requirements for enforcing single interface types, validating allowed values, and migrating legacy data for a tool type system
## arch
Requirements specification document using a constraint-based validation pattern with explicit migration rules for backward compatibility.
## tags
spec, defines, requirements, enforcing, single, interface, types, validating
## symbols
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## workflows
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## dirty
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