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

Annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=true. The description adds meaningful behavior: no local-state changes, no ranking/recommendations, stable order, and refusal of buying/selling/writing operations. This goes beyond the annotations without contradicting them.

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 is front-loaded in the first sentence, but the description includes redundant or vague phrasing such as repeating the server identity and the 'live seat on The Wall' aside. The listing URL and refusal behavior are useful, yet the middle section could be tighter.

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?

Given seven parameters and no output schema, the description leaves significant gaps: pagination semantics through cursor, how matchMode interacts with tags/categories/requiredTerms, and expected return shape. The read-only and ordering guarantees help, but the tool is under-described for an agent to invoke confidently.

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 0%, and the description does not explain any of the seven parameters (tags, limit, query, cursor, matchMode, categories, requiredTerms). It gives a general sense of 'matching skills', but no parameter-level meaning is added, leaving the agent to infer semantics from names and enums alone.

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?

The description uses a specific verb and resource: 'Retrieve matching skills from the verified local AAS catalog', and adds distinguishing characteristics like 'stable catalog order' and 'without relevance scores, ranking, recommendations'. This clearly separates it from generic search or recommendation-oriented siblings.

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?

The description implies usage for read-only, local catalog searches and explicitly notes that write-like operations are refused, but it does not name alternatives or state when to prefer another sibling such as registry_search or get_skill. Some context is provided, but exclusion guidance is missing.

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