Conciseness

Eleven lines of pure instruction with zero padding — no concept explanations, no filler. 'Run typechecking regularly, single test files regularly, and the full test suite once at the end' delivers a complete testing policy in one line. Every token earns its place, matching the anchor 5 example.

Actionability

Some directives are concrete (call the Skill tool with 'tdd', call it with 'code-review', 'the full test suite once at the end', 'Commit your work to the current branch'), but key execution details are missing: 'fetch it from the issue tracker' names no tracker or command, 'Run typechecking regularly' gives no command or cadence, and 'at pre-agreed seams' is undefined. This is anchor 3 ('concrete guidance but incomplete; missing key details'), not 4, where gaps would be minor rather than central to the workflow.

Workflow Clarity

The sequence is clearly ordered with temporal markers ('before starting', 'Once done', 'once at the end') and multiple validation checkpoints exist (regular typechecks, single-file test runs, full suite, code-review). It is not 5 because there is no explicit error-recovery loop (what to do when typecheck/tests/review fail), leaving a minor validation gap characteristic of anchor 4.

Progressive Disclosure

The skill is under 50 lines with no need for external references, and no content is inlined that belongs in a separate file; the short paragraphs are logically ordered. Per the simple-skill scoring note, this earns a 5 without section headers or bundle files.

Specificity

The phrase 'based on a spec or set of tickets' names the domain, but the only action is the generic 'Implement a piece of work' — no concrete sub-actions (fetch tickets, run tests, commit) appear in the description. This matches anchor 2 ('Names the domain but actions are minimal or generic') and not anchor 3, which requires 1-2 concrete actions; it is above anchor 1 because the inputs are concretely named rather than pure abstraction.

Completeness

The 'what' is stated (implement work from a spec or tickets), but there is no 'Use when...' clause or equivalent explicit trigger guidance, capping completeness at 3 per the judging guidelines. It sits at anchor 3 ('clear what but when is missing') rather than 2 because the what is grounded by named inputs, not merely vague.

Trigger Term Quality

'spec', 'tickets', and 'implement' are terms a user would naturally say when needing this skill, but common variations and synonyms are missing ('issues', 'tasks', 'user stories', 'backlog', 'requirements'). This matches anchor 3 ('Some relevant keywords but missing common variations or synonyms') rather than 4, whose keyword coverage is materially broader.

Distinctiveness Conflict Risk

The spec/ticket framing carves out a niche, but 'Implement a piece of work' is broad enough to overlap with general development and coding skills. Anchor 3 ('Somewhat specific but could still overlap with similar skills') fits; it is not 4 because no trigger phrases meaningfully separate it from generic implementation requests.