Conciseness

The body is a dense catalog of exact corrections ('methods are activate(), deactivate(), delete() — NO update()', 'DuplicatePolicyAttachmentException (not PolicyAlreadyAttachedException)') with a single purposeful JSON example. The 'About This Skill' paragraph repeats its documentation-verification advice three ways ('verify specific claims ... against official AWS documentation', 'Prefer fetching known documentation URLs', 'Trust official documentation over memory'), which is minor over-explanation to trim — fits 4 rather than 5.

Actionability

Gives exact method names, exception names, the SAML ACS URL format, a copy-paste-ready JSON policy for the ForAllValues/Null pattern, an exact CLI command ('aws organizations list-available-policy-types'), and a named list of the 8 privilege-escalation actions. For a correction/routing skill this is fully concrete guidance covering the common cases — a 5, not 4 with 'minor gaps'.

Workflow Clarity

The 'Common Workflows' section gives unambiguous conditional routing ('Read references/aws-iam-role-management.md if the user needs to create, scope, or maintain IAM roles...' plus the CRITICAL iam-policy-autopilot mandate). However common-pitfalls.md routing is only linked inline mid-catalog, and there are no verification checkpoints — clear but with minor gaps, matching 4 rather than 5's explicit validation/feedback loops.

Progressive Disclosure

All referenced paths resolve to real bundle files, and two references are clearly signaled with 'Read X if Y' conditions. But service-authorization.md is only reachable two levels deep (via aws-iam-policy-generation.md), and common-pitfalls.md is buried mid-section rather than listed in Common Workflows — good structure with minor organization gaps, so 4 rather than 5's fully one-level-deep, well-signaled references.

Specificity

Lists many concrete capabilities — 'policy evaluation edge cases, trust policy gotchas, STS session limits', 'service role creation ... with aws:SourceAccount/aws:SourceArn trust conditions', 'baseline policy generation from application source code or a Terraform plan JSON' — all in third-person voice with no vague filler. Coverage is comprehensive rather than having minor gaps, so it fits the 5 anchor rather than 4.

Completeness

Explicitly answers what ('Provides verified corrections... structured workflows for IAM role management and baseline policy generation') and when ('Applies when creating IAM roles, writing IAM or bucket policies...'), plus explicit exclusions ('Does not cover non-IAM authorization like Cognito user-pool policies or app-level RBAC'). Both halves with concrete trigger phrases — a clear 5, not 4 where 'when' could be more specific.

Trigger Term Quality

'Applies when creating IAM roles, writing IAM or bucket policies, generating policies from application source code or a Terraform plan JSON, working with STS, Organizations, or condition operators, or any task needing a service or execution role' gives strong natural terms with synonyms (service/execution role). However SAML, MFA, and CloudTrail tasks described in the 'what' have no corresponding trigger phrases, keeping it at 4 ('a few natural terms missing') rather than 5.

Distinctiveness Conflict Risk

A clear AWS IAM niche with distinct triggers (IAM roles, bucket policies, STS, condition operators, service/execution roles) and explicit boundary exclusions, so it is unlikely to fire for a wrong skill. Minimal conflict risk matches the 5 anchor; it is not merely 'mostly distinct' as in the 4 anchor.