Conciseness

The ~265-line body extensively explains concepts Claude already knows (SOLID, DRY, KISS, YAGNI, dependency injection, memoization, generic error-handling patterns), fitting 'Noticeably verbose; several unnecessary explanations or padded sections'; it is not a 3 because the generic best-practice padding is substantial, and not a 1 because it is not a single rambling primer.

Actionability

Concrete TypeScript snippets (error handling, memoization, TDD example, ServiceError class, processItems) and MCP tool-call blocks provide mostly executable guidance, matching 'Mostly executable guidance; concrete code or commands with minor gaps'; it is not a 5 because some examples carry '// Implementation' placeholders and are illustrative rather than copy-paste task code, and not a 3 because most snippets are real and runnable.

Workflow Clarity

An 'Implementation Process' gives a rough sequence (Understand Requirements -> Design First -> TDD -> Incremental Implementation) but has no explicit validation checkpoints or fix-and-retry loops, matching 'Steps listed but validation gaps; sequence present but checkpoints missing or implicit'; not a 4 because no checkpoints are stated, not a 2 because a coherent sequence exists.

Progressive Disclosure

All content is inlined in one ~265-line file with no bundle files or external references, and bulk material (MCP integration details, extended code-style guidance) that could live in separate files is inline, matching 'Some structure but could be better organized; references present but not clearly signaled; content that should be separate is inline'; not a 4 because nothing is split out, not a 2 because section headers provide reasonable structure.

Specificity

The description 'Agent skill for coder - invoke with $agent-coder' names the domain (coder) but lists no concrete actions, matching the anchor 'Names the domain but actions are minimal or generic'; it is not a 1 because a domain is named, and not a 3 because no specific capabilities are stated.

Completeness

It offers only a vague 'what' ('Agent skill for coder') with no 'when' / 'Use when...' clause, matching 'Has a vague what and no when'; the missing trigger guidance caps it below 3, and it is not a 1 because a (vague) what is present.

Trigger Term Quality

'coder' is a single generic keyword and 'invoke with $agent-coder' is invocation syntax rather than a phrase a user would naturally say, fitting 'One or two generic keywords; missing the natural phrases users say'; it is not a 1 because 'coder' is at least domain-relevant, and not a 3 because no natural synonyms or variations appear.

Distinctiveness Conflict Risk

'coder' is somewhat specific to a coding niche but the description is broad enough to overlap with other code-generation or development skills, matching 'Somewhat specific but could still overlap with similar skills'; not a 4 because no distinct triggers narrow it, not a 2 because it is not as generic as 'helps with files'.