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

Annotations already declare readOnlyHint=true, so the safety profile is covered. The description adds only the backing endpoint (GET /runs/{tripDate}); it does not disclose result size, pagination, or how filters combine (AND vs OR).

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 tight sentences: scope first, then optional filters, then the underlying API call. Nothing extraneous.

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 4-parameter list tool with no output schema and no parameter descriptions, the definition is minimal — an agent still lacks any sense of returned run fields or result volume. Adequate to select and call, incomplete for interpreting results.

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 names all four dimensions (day, run number, customer, team member) and clarifies that the customer filter is a customer reference, not a name. It stops short of giving date format or identifier types, which the schema pattern only partly supplies.

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 resource (runs) scoped to a day, plus the optional filter dimensions. It implicitly distinguishes itself from trip-oriented siblings like list_team_trips, though it doesn't name an alternative explicitly.

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?

The 'scheduled for a day' framing implies when to use it, but there is no explicit when-not guidance or pointer to sibling tools such as get_trip or list_team_trips for other access patterns.

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