Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint, idempotentHint and destructiveHint=false, so the safety profile is covered. The description adds that results are paginated and that the server marks it read-only so it 'runs straight away' (execution-approval behavior), but it repeats the read-only fact already in annotations and says nothing about permissions or result limits.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The core purpose and return fields are front-loaded in the first sentence with no fluff. The trailing ability-ID parenthetical and the 'Through Royally' sentence are secondary metadata that could be trimmed, but they are short.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

With no output schema, the description usefully enumerates the return shape (URL, link type, target post details for internal links) and notes pagination. Minor gap: it claims pagination but the schema exposes no page/per_page parameters, leaving an agent unsure how to paginate.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100% – both post_id and site_id are documented with descriptions and an enum – so the schema carries the parameter burden. The description adds no syntax or format detail beyond 'for a given post', making the baseline 3 appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb and resource ('Returns a paginated list of internal and external links stored for a given post') and even enumerates returned fields. The per-post scoping implicitly distinguishes it from sibling site-wide tools like rank_math_get_link_report, though no sibling is named explicitly.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

Usage is only implied by 'for a given post' – an agent can infer this is per-post link retrieval rather than a site-wide report, but there is no explicit when-to-use guidance, no exclusion against get_link_report or check_broken_links, and no stated prerequisites.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.