Conciseness

The body is mostly efficient — instructive tables, templates, and tool sequences with no concept explanations — but the 'If the user has the full GSD system installed' and 'Attribution' sections are non-essential padding and several passages could be tightened. Fits anchor 3 ('mostly efficient but includes some unnecessary explanation or could be tightened'); not 4 because those meta-sections consume real tokens without advancing the task.

Actionability

Concrete tool sequences ('terminal("mkdir -p spikes/001-websocket-streaming")'), a full directory layout, and complete verdict and head-to-head templates make the guidance mostly executable. Not 5 because write_file examples carry '...' placeholder bodies, making them sketches rather than copy-paste ready; not 3 because the sequences and templates are concrete and directly followable.

Workflow Clarity

The decompose → research → build → verdict loop is explicit with an alignment checkpoint ('Build all in this order, or adjust?'), an iteration feedback loop ('Observe output, iterate'), and evidence-based validation ('Never declare "it works" after one happy-path run', verdict must be backed by evidence). This matches anchor 5 — clear sequence, explicit validation, feedback loops for error recovery.

Progressive Disclosure

No bundle files exist and none are referenced; sections are clearly headed and well-organized for a self-contained skill of this size. Fits anchor 4 ('good structure; most content appropriately placed; minor organization gaps'); not 5 because at ~185 monolithic lines, content such as the verdict/head-to-head templates and the GSD cross-reference could be split into one-level-deep reference files.

Specificity

Names the domain ('Throwaway experiments') and one concrete action ('validate an idea before build'), but offers no enumeration of concrete outputs or capabilities. It is not 4 because only a single action is given, and not 2 because the domain and action are specifically named rather than generic.

Completeness

The 'what' is clear (throwaway experiments to validate an idea), but there is no 'Use when...' clause or any explicit trigger guidance, which caps completeness at 3 per the judging guidelines. It is not 2 because the 'what' is specific rather than vague.

Trigger Term Quality

The only keyword is the generic 'experiments'; natural user phrases like 'spike this out', 'quick prototype', 'is this even possible', or 'proof of concept' are entirely absent from the description. Anchor 2 fits ('one or two generic keywords; missing the natural phrases users say') since no synonyms or variations appear at all.

Distinctiveness Conflict Risk

'Throwaway experiments... before build' carves out a spike/prototype niche, but without trigger phrases the description could overlap with general research, planning, or prototyping skills. Fits anchor 3 ('somewhat specific but could still overlap with similar skills'); not 4 because the boundary against plain research/exploration is not explicit.