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

With no annotations at all, the description carries the full behavioral burden and delivers almost nothing: it doesn't say the operation is read-only, doesn't mention defaults (sort=-dateUpdated, limit=10), sorting semantics, pagination strategy, or whether the scope is the token's user or a workspace. Only the bare fact of listing is conveyed, which the name already implies.

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 filler and the resource front-loaded; nothing is redundant. It loses a point only because the extreme brevity is under-specification rather than economy — but there is no wasted text to cut.

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?

An output schema exists, so return values need not be explained, and the three optional params are fully documented in the schema. Still, for a tool with zero annotations and no title, the description should at minimum establish read-only nature and pagination/scope expectations; as written an agent must infer all of that, leaving the definition materially incomplete.

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% — sort, limit and offset each carry clear Russian descriptions including the '-' prefix convention and the max-50 cap — so the schema does the heavy lifting and baseline 3 applies. The description adds no parameter meaning of its own beyond the word "пользователя".

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?

"Получить список статей пользователя" names a specific verb (list) and resource (user's articles), which is clearly distinguishable from single-item or mutation siblings such as get_article, delete_article or create_article. It does not, however, differentiate itself from adjacent list/query tools like list_artifacts or list_artifact_revisions, so the sibling boundary is left implicit.

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 no statement of when to use this tool versus alternatives — notably get_article for a single article, or the artifact listing tools. No prerequisites, no note about paging through results, nothing that routes the agent among the ~60 siblings.

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