timestamp_converter

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

With no annotations, the description must fully disclose behavioral traits. It mentions bidirectional conversion but does not specify how direction is detected (e.g., auto-detection vs. explicit parameter), what input formats are accepted beyond the schema, or the exact output format. Missing details on handling of seconds vs. milliseconds and timezone interactions.

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 sentence that is concise and direct, but it could include additional context without becoming lengthy. Efficiency is high, but the brevity sacrifices completeness.

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 tool with 2 parameters and no output schema, the description is minimally adequate. It fails to specify output format, error behavior, or conversion edge cases, which a more complete description would provide.

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 already provides 100% coverage with descriptions for both parameters, so the description adds little semantic value. The 'vice versa' implication suggests auto-detection, which is not in the schema, but this is not explicitly stated. Baseline 3 is appropriate.

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: converting Unix timestamps to human-readable dates and vice versa. This is a specific verb+resource that distinguishes it from sibling tools like date_calculator or time_duration_calculator.

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?

No guidance is provided on when to use this tool versus alternatives. Notably, a sibling tool named 'unix_timestamp_converter' exists, but the description does not differentiate the two, leaving ambiguity about their respective roles.

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