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

Annotations already declare readOnlyHint and idempotentHint, so safety is covered. The description adds value beyond them by disclosing ordering ('newest first') and that results carry click counts, which shapes how an agent interprets the response. No pagination or rate-limit behavior is mentioned, keeping it below 5.

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?

Two compact sentences with the core behavior front-loaded and the usage cue second. Nothing is redundant or padding.

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?

For a simple two-optional-parameter read tool, the description covers scope, ordering, and returned data (click counts) adequately, and the schema fully documents paging. With no output schema, it could still say a bit more about result shape, but nothing essential is missing.

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%, with both limit and offset fully documented in the schema including defaults and ranges. The description adds no syntax or usage detail for these parameters beyond implying an ordered listing, so the baseline of 3 applies.

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 ('List the short links in the account') plus sort order ('newest first') and payload ('with click counts'). The plural 'List' clearly separates it from get_link (singular retrieval) and create_link, 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?

Gives a concrete when-to-use: 'Use this before creating a link to avoid duplicates.' No explicit when-not or alternative routing (e.g., when to prefer get_link or get_link_stats instead), so it stops short of a full 5.

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