analyze_commute

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

With no annotations, the description must carry transparency. It discloses that the tool returns estimated times, distances, and turn-by-turn directions, but it does not mention any limitations, data sources, or side effects. It describes the output but omits behavioral traits like rate limits or accuracy caveats.

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 reasonably concise and well-structured, with a clear purpose statement followed by Args/Returns sections. It front-loads the primary action and keeps each section focused, though it could trim some redundancy between the description and the schema.

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?

Given the tool's complexity, lack of annotations, and no output schema, the description provides a strong context: it explains use cases, all parameters, and a detailed return summary. It misses edge cases or examples, but it is complete enough for an agent to understand what the tool does and when to use it.

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 schema has 0% description coverage, but the description compensates fully by documenting all six parameters with types, units (decimal degrees), and formats (HH:MM). It also explains the modes options and the purpose of depart_at, adding significant meaning beyond the raw schema.

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 'Perform a detailed commute analysis between home and work locations,' which specifies the verb, resource, and scope. It distinguishes itself from sibling tools like get_route_directions by emphasizing multi-modal comparison and advanced metrics, and by mentioning real estate and relocation use cases.

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 provides clear use-case context ('Essential for real estate decisions, lifestyle planning, and workplace relocation analysis') but does not explicitly list when-not-to-use or alternative tools. It implies a scenario where comparing multiple modes is needed, which is helpful but not fully explicit.

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