Conciseness

The body is lean and assumes Claude's competence — it does not explain what SharePoint or openpyxl is, and every section gives actionable guidance without padding. It is not a 2 because there is no unnecessary explanation that could be tightened further.

Actionability

It names exact tools and flags (get_site, list_site_drives, search, fetch(download_raw_file=true), update_file, openpyxl) with concrete parameter signatures and decision rules. Per the instruction-only carve-out, absence of a code block is not penalized because the guidance is concrete and actionable; it is not a 2 because the direction is specific rather than vague or pseudocode-only.

Workflow Clarity

The 9-step Core Workflow is clearly sequenced with explicit verification checkpoints (step 7 verify inserted cells, step 9 confirm metadata and reopen, plus a dedicated Verification section) and error handling (stop and report on connector failure). It is not a 2 because validation is explicit rather than missing or only implicit.

Progressive Disclosure

At under 50 lines with no bundle files, it is organized into four clear sections (Overview, Core Workflow, Safety, Verification) and a single one-level-deep cross-skill reference. It is not a 2 because structure is clear and references are well-signaled rather than nested or inline-bloated.

Specificity

"Edit SharePoint-hosted spreadsheet files while preserving workbook structure, formulas, and formatting" names a concrete action plus multiple specific preservation targets, matching the 'lists multiple specific concrete actions' anchor. It is not a 2 because the actions are concrete and comprehensive rather than partial.

Completeness

It explicitly answers both what ("Edit SharePoint-hosted spreadsheet files...") and when ("Use when the user wants to update a real spreadsheet in SharePoint..."), with an explicit trigger clause. It is not a 2 because the 'when' is explicit, not merely implied.

Trigger Term Quality

It includes natural terms like "spreadsheet files", "workbook", and "SharePoint", but omits extremely common user variations such as "Excel" and ".xlsx". It is not a 3 because coverage of natural terms is incomplete, and not a 1 because several relevant keywords are present.

Distinctiveness Conflict Risk

The SharePoint niche is clear and it explicitly distinguishes itself from "summarize extracted sheet text", making conflict with generic spreadsheet skills unlikely. It is not a 2 because the trigger is distinct rather than broadly overlapping.