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

With no annotations, the description does disclose the meaningful behavioral fact that the result is a lightweight index (ids plus verification state) rather than full fact bodies. It says nothing about pagination, ordering, filtering by state, or whether unverified facts are included.

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, which is right for a trivial zero-arg list tool. The '(deposituk)' parenthetical is mildly redundant given the tool name already carries the domain prefix.

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 zero-parameter list tool with no output schema, the description is the only place return shape can be conveyed, and it covers the essentials (ids and verification states). It omits result size, ordering, and pagination behavior, which the agent would need to call it confidently in a multi-domain family.

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 there is nothing for the description to disambiguate beyond the input schema; baseline 4 applies. The description's mention of returned fields is a bonus rather than a parameter explanation.

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 the exact resources returned (fact ids + verification states), and the '(deposituk)' qualifier ties it to its domain slice of the sibling family. An agent can distinguish it from deposituk_get_fact and deposituk_changes by that returned-content phrasing, though it never explains what the deposituk 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 when-to-use or when-not-to-use guidance. It doesn't say to call this first to discover ids and then use deposituk_get_fact for detail, nor contrast itself with deposituk_changes, leaving the agent to infer the discovery-then-fetch workflow from tool names alone.

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