Conciseness

The body is dense with domain-specific directives and assumes competence (never explains what Deepline or a Play is), matching the level-4 anchor of efficient prose with minor trim opportunities. It is not level 5 because a few sentences are convoluted and could be tightened (e.g., 'load each skill once rather than restarting when their routing links meet', 'A later successful run or an empty historical export alone cannot establish what happened to them'); it is not level 3 because there is no padded or unnecessary explanation of known concepts.

Actionability

Concrete, specific guidance throughout — 'Read the causal error behind the final failure message. Trace the affected row back through its logs, retained tool response, input, and pinned source revision; compare with a working run' — with commands appropriately delegated to deepline-gtm, matching the level-4 anchor of mostly executable guidance with minor gaps. It is not level 5 because some artifacts are described but never shown (e.g., the 'paste-ready handoff' has no format or example); it is not level 3 because the steps specify exact evidence to examine, conditions to check, and approval gates rather than high-level hints.

Workflow Clarity

A clearly sequenced five-phase workflow (find → trace → reproduce → propose → apply/verify) with explicit validation checkpoints ('show the expected case failing before the change and passing after the smallest fix', 'Verify the repaired revision and the original failing case') and a feedback loop on failure ('If verification fails, revisit the cause instead of stacking speculative fixes or expanding retries and spend'), matching the level-5 anchor. Approval is required before destructive or live operations, so the destructive/batch cap does not apply.

Progressive Disclosure

Well-organized single-file structure — a Quick Start overview followed by five clearly headed phases — with all content appropriately inline for a process skill and no bundle files to misplace, matching the level-4 anchor of good structure with minor organization gaps. It is not level 5 because there are no well-signaled reference files (the under-50-line exception does not apply to this ~85-line body), and the 'deepline-gtm' delegation, while clearly signposted, is to a separate skill rather than a navigable reference; it is not level 3 because nothing that belongs in a separate file is inlined and navigation via headers is easy.

Specificity

Lists multiple concrete actions — 'Diagnose failing, stuck, partial, or incorrect Deepline Plays', 'reproduce safely', 'propose an evidence-backed fix', 'apply it after approval' — covering the full triage lifecycle, plus the edge case 'including when no Play is named'. This matches the level-5 anchor (multiple specific concrete actions, comprehensive coverage); it is not level 4 because there are no meaningful coverage gaps in the action set.

Completeness

The 'what' is explicit (diagnose, reproduce, propose, apply fixes to Plays) and a 'when' exists via 'For customer troubleshooting; skip platform incident response', matching the level-4 anchor where both are present but 'when' could be more explicit. It is not level 5 because it lacks a concrete 'Use when a customer reports...' trigger phrase; it is not level 3 because the audience/scope clause plus the named failure states give real, explicit trigger guidance rather than a merely implied 'when'.

Trigger Term Quality

Natural terms users would say are present — 'failing', 'stuck', 'partial', 'incorrect', 'troubleshooting' — matching the level-4 anchor of good coverage with a few natural terms missing. It is not level 5 because common synonyms like 'broken', 'error', or 'not working' are absent, and not level 3 because multiple natural failure-state phrases are covered, not just one domain keyword.

Distinctiveness Conflict Risk

It carves out a clear niche — failing 'Deepline Plays' triage — and explicitly disambiguates from the closest conflicting skill ('Use deepline-gtm for the primitives', 'skip platform incident response'), matching the level-5 anchor of a clear niche with distinct triggers and minimal conflict risk.