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

Annotations provide readOnlyHint=false, indicating mutation. The description adds that it configures time range, speed, and animation state, which is consistent. It does not disclose potential side effects like resetting the animation or requiring currentTime to be within the range, but for a simple setter 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 a single concise sentence that front-loads the purpose. Every word earns its place, with no filler or repetition.

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 6 parameters and no output schema, the description summarizes the core purpose but does not cover parameter relationships (e.g., currentTime must be within start/stop, clockRange behavior). The schema provides parameter details, but the description is adequate yet not fully complete for edge cases.

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 coverage is 67%, with startTime, stopTime, multiplier, and currentTime described. The description groups them into time range, speed, and animation state, which adds conceptual clarity. However, it does not clarify clockRange or shouldAnimate beyond their schema definitions, and no parameter-specific details are added.

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 configures the Cesium clock, specifying time range, speed, and animation state. It uses a specific verb (configure) and resource (Cesium clock), and is distinct from sibling tools like controlAnimation or playTrajectory.

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: when you need to configure the Cesium clock. However, it does not explicitly state when to prefer this over alternatives or any prerequisites/exclusions. No when-not-to-use guidance is given.

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