get_current_time

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

With no annotations, the description is the sole carrier of behavioral context, yet it only restates the purpose without disclosing behavior such as time source, DST handling, or return format. It adds no operational detail beyond what the name already 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, front-loaded sentence conveys the purpose without any filler. It is appropriately sized for a simple tool.

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 simple read-only tool with full schema parameter documentation, the description plus schema is sufficient for an agent to select and invoke it correctly. It lacks specifics about output format, but no output schema exists and the operation is straightforward.

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 the schema already documents both parameters thoroughly. The description adds no new parameter details beyond referencing 'specified timezone', matching the baseline for high schema coverage.

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 uses a specific verb ('Get') and resource ('current time') with a timezone qualifier, clearly distinguishing it from siblings like convert_time and format_date. It states exactly what the tool does.

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 implies the tool is for obtaining the current time in a specific timezone, providing clear context for when to use it. It doesn't explicitly mention alternatives, but no sibling tool offers the same current-time capability.

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