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

With no annotations, the description carries the full behavioral burden yet discloses only the covered time range. It does not say whether this is a read-only operation, what the board contains, whether results are paginated, or how much data 14 days 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 front-loads the scope with no filler or redundancy. It is efficient, though the terseness is arguably part of the underspecification problem rather than a virtue.

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 annotations, no output schema, and siblings that overlap in purpose, the description should explain what the board returns and how it relates to trial_today. Instead it leaves the agent without enough context to choose confidently.

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 schema baseline of 4 applies and the description has no parameter semantics to add or omit.

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 description names a resource (the Trial board) and a time scope (today plus the last 14 days), but supplies no verb, so it is unclear whether it returns the board, renders it, or refreshes it. It does not differentiate from siblings like trial_today or trial_submit, leaving an agent to guess which of the three to call.

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 when-to-use guidance and no mention of the obvious alternatives (trial_today, trial_submit) even though they sit in the same sibling set. The reader must infer that this is the historical/list view and trial_today is the single-day view.

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