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

With no annotations, the description carries the full behavioral burden; it discloses that results are ids plus verification states, which implies a read-only enumeration. It does not say whether the listing is exhaustive, paginated, ordered, or whether verification states are enum-like values the agent will need to interpret.

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 front-loaded sentence with no filler, well sized for a trivial no-arg list tool. The trailing parenthetical domain marker is slightly redundant with the tool name but not wasteful enough to penalize further.

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?

There is no output schema, so the description is the only source of return-value information, and it names the two fields but not their shape or possible values. For a tool whose whole job is producing ids and states, a brief note on what a verification state looks like would close the remaining gap.

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?

The tool takes zero parameters, so the baseline is 4; there is no parameter meaning the description could add or omit. Nothing in the schema is left unexplained.

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 ('List') and specific resources ('fact ids + verification states'), so the operation is unambiguous. Differentiation from siblings is only via the '(pettraveluk)' domain tag, which repeats the name rather than explaining what the pettraveluk domain covers.

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?

No guidance on when to choose this over pettraveluk_get_fact or pettraveluk_changes, and no stated prerequisite that an id from here feeds the get_fact sibling. The agent must infer the workflow entirely from sibling names.

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