# Specification Quality Checklist: rettX ID Core Library (v1)

**Purpose**: Validate specification completeness and quality before proceeding to planning
**Created**: 2025-12-06
**Feature**: [spec.md](../spec.md)

## Content Quality

- [x] No implementation details (languages, frameworks, APIs)
- [x] Focused on user value and business needs
- [x] Written for non-technical stakeholders
- [x] All mandatory sections completed

## Requirement Completeness

- [x] No [NEEDS CLARIFICATION] markers remain
- [x] Requirements are testable and unambiguous
- [x] Success criteria are measurable
- [x] Success criteria are technology-agnostic (no implementation details)
- [x] All acceptance scenarios are defined
- [x] Edge cases are identified
- [x] Scope is clearly bounded
- [x] Dependencies and assumptions identified

## Feature Readiness

- [x] All functional requirements have clear acceptance criteria
- [x] User scenarios cover primary flows
- [x] Feature meets measurable outcomes defined in Success Criteria
- [x] No implementation details leak into specification

## Constitution Compliance

- [x] Aligns with Invariant I (One Patient, One ID) - Library doesn't enforce, but doesn't violate
- [x] Aligns with Invariant II (Global Uniqueness) - Sufficient entropy requirement specified
- [x] Aligns with Invariant III (Zero PII, Zero Meaning) - FR-019 explicitly prohibits PII
- [x] Aligns with Invariant IV (Immutability) - Out of scope (rettxapi responsibility)
- [x] Aligns with Invariant V (Human & Machine Readable) - Ambiguity-safe alphabet specified
- [x] Aligns with Principle VI (Purity & Statelessness) - FR-018 prohibits I/O
- [x] Aligns with Principle VII (Minimal Surface) - FR-021 limits to 3 functions
- [x] Aligns with Principle VIII (Backward Compatibility) - v1 format versioning mentioned

## Notes

- All items pass validation
- Spec ready for `/speckit.plan` phase
- Assumptions documented regarding exact character count (to be determined in planning based on entropy analysis)
