maps_direction_transit_integrated

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It reveals what transport modes are covered but omits other behavioral traits such as response format, required cross-city parameter handling, rate limits, or any operational caveats. For a route-planning API, this is a meaningful gap.

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?

The description is one short, front-loaded sentence that conveys the core purpose and coverage. There is no redundant or filler content, and every phrase 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?

This is a complex tool with 14 parameters, no output schema, and no annotations, yet the description only provides a high-level overview. It does not explain cross-city requirements, default behaviors, return structure, or how the many optional parameters interact. The description is too thin to fully support correct invocation for a tool of this complexity.

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 description coverage is 100%, so every parameter already has a meaningful description in the schema. The tool description does not add parameter-level semantics beyond noting the cross-city scope, which is the expected baseline when the schema is thorough.

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 clearly states the tool's function: public transit route planning, spanning bus, subway, train, and cross-city travel. This distinguishes it from sibling direction tools like driving, walking, and bicycling. The resource and scope are specific and immediately understandable.

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 description makes clear that this tool is for transit and cross-city route planning, giving an agent strong contextual guidance on when to select it. It does not explicitly name sibling alternatives or state when not to use it, but the transit coverage is explicit enough to route selection correctly.

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