Lists multiple specific concrete actions: 'Translates C++ functions into Dafny', 'modeling pointers, fixed-width integers, and manual memory as Dafny heap objects and bitvectors'. These are precise technical operations.

Clearly answers both what ('Translates C++ functions into Dafny for formal verification, modeling pointers...') AND when ('Use when verifying a C++ algorithm, when proving absence of overflow or out-of-bounds access, or when building a verified reference for safety-critical C++ code').

Includes natural keywords users would say: 'C++', 'Dafny', 'formal verification', 'overflow', 'out-of-bounds', 'safety-critical', 'verified'. Good coverage of domain-specific terms a user seeking this capability would mention.

Highly distinctive niche combining C++, Dafny, and formal verification. The specific mention of 'heap objects and bitvectors' and verification scenarios makes it unlikely to conflict with general code translation or other verification skills.

The content is lean and efficient, using tables to compress information and avoiding explanations of concepts Claude already knows. Every section adds C++-specific translation knowledge that isn't obvious.

Provides fully executable Dafny code with a complete worked example, concrete translation patterns in tables, and specific guidance on modeling choices. The argmin example is copy-paste ready with proper invariants and specifications.

The skill clearly sequences the decision process: decide overflow model upfront, then model pointers, then translate. The 'Do not' section provides explicit validation checkpoints, and the output format ensures structured verification of modeling choices.

Excellent structure with clear sections (impedance mismatch table, overflow decision, pointer modeling, worked example, limitations, anti-patterns). References to related skills (python-to-dafny-translator, program-to-tlaplus-spec-generator) are one level deep and clearly signaled.