The body is lean — a two-sentence overview plus two numbered examples with copy-paste commands — and assumes Claude's competence without explaining what Python or Fibonacci are, matching the 'lean and efficient; every token earns its place' anchor.

Both examples are fully executable: 'python3 scripts/fib.py 10 > out/fib.txt' (fib.py is a verified real bundle file) and a complete heredoc Python script for summing integers, both copy-paste ready.

This is a simple single-action skill where each numbered example is an unambiguous single command with no destructive/batch operations needing validation, so per the simple-skills scoring note workflow clarity can score 3.

Under 50 lines with no need for external references, the body is organized into clear Overview, Examples, and Output Files sections and references a real one-level-deep bundle file (scripts/fib.py), meeting the simple-skills anchor for progressive disclosure.

The phrase 'Small Python utilities for math and text files' names the domain (math and text files) but lists no concrete actions, so it sits above the vague 'Helps with documents' anchor yet below the multi-action score-3 anchor.

It states what the skill is ('Small Python utilities for math and text files') but provides no 'Use when...' trigger guidance, so per the judging guidelines completeness is capped at 2 for missing explicit 'when' guidance.

'Python', 'math', and 'text files' are somewhat natural terms a user might say, but coverage is generic and misses common variations like 'numbers', 'sum', or 'Fibonacci', matching the 'some relevant keywords but missing common variations' anchor.

'Python utilities for math and text files' is somewhat specific but 'Python utilities' could overlap with many general Python or math skills, matching the 'somewhat specific but could still overlap' anchor rather than a clear distinct niche.