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

Annotations already declare readOnlyHint/destructiveHint, so the safety profile is covered; the 'read-only' clause is largely redundant. What the description adds is the scoping behavior ('takes no title_id') and the fact that the payload includes reference files alongside SKILL.md, which is useful since no output schema exists. It omits size/pagination or not-found handling, keeping it below a 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 short sentences with no filler; the payload description comes first and the behavioral qualifiers follow. Every clause carries information.

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 one-param read tool with no output schema, the description covers the essentials: what is returned (SKILL.md plus reference files), that it is read-only, and that no title_id is needed. Missing only edge-case behavior such as what happens for an unknown skill name or how large the returned content may be.

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% and the single 'name' parameter already carries its own format hint and example ('currency-system'). The description adds no syntax or format detail beyond the schema, so the baseline 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 ('Get') and a precise resource ('one SDK skill's full content (SKILL.md) and its reference files'), including the payload scope. This clearly separates it from list_skills and from the mass of get_<domain> siblings that retrieve title data.

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?

Adds scoping context an agent needs: 'Read-only' and 'takes no title_id', which is a meaningful distinction in a catalog where nearly every sibling get_* tool requires a title_id. The param description points back to list_skills as the source of a valid name, implying the correct call order. No explicit alternatives or when-not conditions are named, so it falls short of a 5.

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