bilibili_capabilities

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

readOnlyHint=true is consistent with a 'query' verb, so no contradiction. The description adds only the category-scoping hint beyond the annotation; it does not disclose the available categories, the shape of the returned capability data, or whether the result is a full dump versus a filtered slice.

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?

A single short sentence with no padding. Efficient, though terseness here shades into under-specification rather than economy.

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 discovery tool the description is the only place the caller can learn what categories exist and what the response looks like (no output schema), and it provides neither. An agent can invoke it bare, but cannot use the one parameter purposefully.

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% with a single undocumented 'category' string. The description does gesture at it ('按分类'), telling the agent it is a category filter, but it supplies no valid values or enum, so an agent still cannot construct a meaningful category argument.

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 verb (查询) and object (本MCP工具、接口与参数约束) are stated, and it is clearly a meta/discovery tool distinct from the content-fetching siblings. However '接口与参数约束' is vague jargon that doesn't say what an agent actually gets back (tool list? parameter docs? per-category breakdown?).

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?

There is an implied usage (call this to learn about the MCP tool by category), but no explicit when-to-use, no mention of when to prefer it over directly calling a sibling, and no note that the category parameter is optional or how the unfiltered call behaves.

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