Conciseness

The body is mostly efficient with no explanations of concepts Claude already knows, but library defaults are repeated (max-depth "n = 6" and "maxCost = 5000" in both Overview and Step 2; "objectCost = 2, scalarCost = 1, depthCostFactor = 1.5" in Step 3 and again in a Step 4 comment), and the same escape.tech plugin URLs are cited three to four times across Overview, Steps 2–4, and References. That is more than the minor trimming of the 4 anchor; it fits the 3 anchor ("mostly efficient but... could be tightened").

Actionability

Install commands, copy-paste TypeScript test code for all three libraries on both Apollo and Envelop, and a resolver-instrumentation verification pattern ("expect(resolverCallCount).toBe(0)") make the guidance mostly fully executable. However the graphql-armor over-cost example relies on an uncomputed "Stack fields so calculated cost > maxCost=200" over a ~15-field query that likely stays under 200, so that test as written could pass vacuously — a real gap for a skill whose purpose is over-limit construction. Fits the 4 anchor, not the 5 anchor.

Workflow Clarity

Clear numbered sequence (Install → Identify limit → Craft queries → Write tests → Assert rejection before execution) with explicit validation checkpoints: the HALT hard-stop when no limit is configured, boundary guidance ("Use limit+1 to be unambiguous"), config-drift detection ("Tests that pass in NODE_ENV=test but fail in NODE_ENV=production... signal a configuration drift problem"), and a six-row anti-patterns table serving as a failure-mode checklist. Matches the 5 anchor.

Progressive Disclosure

The two bundle files (references/introspection.md, references/persisted-queries.md) exist, are one level deep, and are clearly signaled from both the Overview and the References section; the SKILL.md body keeps only the testing procedure inline and externalizes the reference catalogs. Content is appropriately split with easy navigation, matching the 5 anchor.

Specificity

The description lists multiple concrete actions in third person — "crafts over-limit depth and complexity queries then asserts rejection before execution, verifying that graphql-depth-limit, graphql-cost-analysis, and graphql-armor (max-depth / cost-limit / max-tokens plugins) are actually enforced and not just configured" — with named libraries and plugins. Coverage of the skill's actions is comprehensive, matching the 5 anchor rather than the 4 anchor ("minor gaps in coverage").

Completeness

Both questions are answered explicitly: what ("crafts over-limit depth and complexity queries then asserts rejection before execution, verifying that... are actually enforced and not just configured") and when ("Use when auditing a GraphQL service for DoS or schema-disclosure exposure, hardening a production deployment, or adding tests that prove the limits in CI"). Clear 5 — an explicit 'Use when' clause with concrete triggers.

Trigger Term Quality

Natural trigger phrases a user would actually say are present: "auditing a GraphQL service for DoS or schema-disclosure exposure, hardening a production deployment, or adding tests that prove the limits in CI", with synonyms for the attack class (DoS / schema-disclosure) and the limit types (depth / complexity). This is comprehensive synonym coverage per the 5 anchor, not merely good coverage (4).

Distinctiveness Conflict Risk

The core niche (depth/cost/token limit enforcement testing) is clearly distinct, but the description advertises that it "carries the introspection attack-surface catalog... and the persisted-query allowlisting strategies" — the territories of closely related companion skills — which invites triggering for introspection-disable or APQ-allowlist tasks. This is minor overlap risk with closely related skills (4 anchor), not the minimal-conflict 5 anchor.