Conciseness

The body is lean and assumes competence — no re-teaching of conductivity or circuits — but the Key Notes section has minor trimmable redundancy: "The observation (`look around`) after waiting is critical" restates step 5, and "The circuit is fragile; connect components in the order specified" restates the "exact sequence" instruction. This matches the 4 anchor (efficient with minor instances that could be trimmed) rather than 5's every-token-earns-its-place.

Actionability

Fully concrete, executable guidance for the environment's action set: an exact terminal-to-terminal wiring sequence (battery anode → orange wire terminal 1, etc.), exact commands (`focus`, `wait1` twice, `look around`), and concrete outcome routing (blue box for conductive, orange box for non-conductive). As an instruction-only skill with copy-ready specificity, it meets the 5 anchor.

Workflow Clarity

A clearly sequenced 5-step procedure with an explicit observation checkpoint (wait, look around, branch on bulb state) — but there is no error-recovery guidance for ambiguous bulb state, failed wiring, or an object without two terminals, which keeps it below the 5 anchor's feedback loops. The operation is neither destructive nor batch, so the cap of 3 does not apply.

Progressive Disclosure

Sections are well organized and the content is appropriately inlined for a sub-50-line skill, but the actual bundle structure reveals a gap: references/circuit_diagram.md is never referenced from the body and is itself incomplete (a dangling "## Connection Map" heading with no content), leaving an orphaned, partially duplicated reference file. This is the 4 anchor's "minor organization gaps" rather than the 5 anchor's well-signaled, easy navigation.

Specificity

Lists several concrete actions — "determines if an object is electrically conductive", "integrating it into a circuit", "observing a light bulb" — with minor gaps (no mention of the battery or sorting outcomes). It exceeds the 3 anchor (domain plus only 1-2 actions) but is not comprehensive enough for the 5 anchor.

Completeness

Both what ("Determines if an object is electrically conductive by integrating it into a circuit and observing a light bulb") and when ("Triggered when classifying an object based on conductivity") are explicitly stated in third-person voice. The single trigger clause could be more specific with additional concrete phrases, so it falls short of the 5 anchor.

Trigger Term Quality

Natural keywords are present ("classifying", "conductivity", "electrically conductive", "circuit"), giving good coverage of what a user would say, but common synonyms like "insulator", "non-conductive", or "does it conduct" are missing, matching the 4 anchor rather than the 5 anchor's comprehensive synonym list.

Distinctiveness Conflict Risk

The description occupies a clear niche — electrical conductivity classification via a circuit-and-bulb test — with distinct trigger terms, making accidental activation by unrelated skills very unlikely.