get_timezone

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

With no annotations, the description carries the full burden of disclosure. It explicitly states that the tool 'queries /api/time/timezone' and returns a TimezoneInfo object with fields (name, offset, abbr), making the read-only nature clear. It does not discuss error conditions or permissions, but for a zero-parameter fetch this is adequate.

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 efficiently structured: a one-sentence summary, the endpoint path, a formatted list of return fields with types, and a practical use case. Every sentence contributes value without redundancy.

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?

The tool is simple (zero params, no output schema), but the description fully specifies the return shape and types. It provides enough context for an agent to invoke the tool and interpret the result without additional information.

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?

There are no parameters, and the schema properties object is empty (100% coverage by default). The baseline of 4 applies, and the description adds no parameter-specific details because none are needed.

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 opens with a specific verb ('Retrieve') and resource ('current timezone configured on the Busy Bar device'), clearly stating the tool's function. It does not explicitly contrast with sibling tools like get_time or get_tzlist, but the phrase 'configured timezone' makes the intent distinct enough.

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?

A 'Use case' section provides clear context for when to call this tool: 'Checking which timezone the device is configured to so you can display times correctly or decide whether an update is needed.' However, it does not mention when not to use it or name alternative tools, so it stops short of full guidance.

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