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

Annotations already declare readOnlyHint=true and openWorldHint=false, so safety is covered. The description adds genuine context beyond them: 'latest published' signals data freshness/versioning (not live data) and 'VIP required' discloses an access prerequisite the agent must satisfy before calling.

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?

Two short sentences with zero waste, leading with the core action and scope, then the filters and the access precondition. Every clause earns its place.

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?

With no output schema and no parameter descriptions, the description leaves the shape of the 'aggregate progress' response (which metrics, per-state or per-subclass breakdowns) and the meaning of 'VIP' unexplained. For a simple read-only lookup this is workable but not complete.

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 coverage is 0%, so the description carries the burden; it does name both filter dimensions (state, visa subclass), which maps to the two properties. But it gives no value semantics — no mention of state abbreviations (2-5 chars) or 3-character visa subclass codes — so an agent still cannot construct valid values from the description 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?

States a specific verb ('Return') and a precisely scoped resource ('latest published aggregate state nomination progress'), which is clearly distinct from siblings like get_latest_overview or get_invitation_rounds. It does not explicitly contrast itself with those siblings, keeping it below a 5.

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?

'optionally filtered by state or visa subclass' implies the filtering use case, and 'VIP required' signals an access precondition. However, there is no explicit when-to-use guidance, no named alternative (e.g., get_latest_overview for non-nomination aggregates), and no statement of what happens with no filters.

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