chuk-mcp-time

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

With no annotations provided, the description carries the full burden and adds valuable behavioral context: it explains the NTP consensus method, outlier removal, latency compensation, and return details. However, it doesn't cover potential failure modes, rate limits, or authentication needs, leaving some gaps for a tool with network dependencies.

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 well-structured and appropriately sized: it starts with a clear purpose, details the method and behavior, and ends with parameter and return explanations. Every sentence adds value, such as explaining NTP consensus and latency compensation, with no redundant information.

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 (network-dependent time fetching) and no annotations or output schema, the description is largely complete: it covers purpose, method, parameters, and return structure. However, it lacks details on error handling or output format specifics, which could be useful for an agent invoking this tool.

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 description adds significant meaning beyond the input schema, which has 0% coverage. It explains 'mode' as accuracy modes ('fast' vs 'accurate') with server counts, and 'compensate_latency' as adding query duration to timestamp, including default behavior. This fully compensates for the schema's lack of descriptions.

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 purpose: 'Get current UTC time with high accuracy using NTP consensus.' It specifies the verb ('Get'), resource ('current UTC time'), and method ('using NTP consensus'), distinguishing it from siblings like get_local_time or get_time_for_timezone by focusing on UTC accuracy through NTP.

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 usage through details like 'high accuracy' and NTP server queries, but does not explicitly state when to use this tool versus alternatives like compare_system_clock or get_local_time. It provides context on accuracy modes but lacks direct guidance on tool selection among siblings.

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