Algol Minimum

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

Annotations already declare readOnlyHint=true, destructiveHint=false, and idempotentHint=true, providing basic safety and idempotency info. The description adds minimal behavioral context beyond 'find within a date range,' but does not contradict annotations. Since annotations cover the behavioral burden, a score of 3 is appropriate.

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 concise, including only essential information: purpose, group, cost, and an example. It is well-structured and front-loaded. The only minor drawback is the lack of parameter explanations, but overall it is efficient.

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 description adequately explains the primary functionality and gives an example request. However, it does not clarify the output format, timezone handling, or the role of the optional longitude parameter. Given the tool's moderate complexity, this is a moderate gap.

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 0%, meaning no parameter descriptions exist in the schema. The description only provides an example with startDate and endDate but does not explain their meaning, format (though schema has a pattern), or the purpose of the optional 'longitude' parameter, failing to compensate for the schema gap.

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 that the tool finds the nearest minimum brightness moment of Algol within a date range, using a specific verb ('Find') and resource ('minimum brightness moment of Algol'). It also provides context about Algol being an eclipsing variable star, which distinguishes it from other tools.

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 includes a group label and cost but no explicit guidance on when to use this tool versus alternatives. The sibling 'algol_minimum_nearest' exists but is not mentioned, and there are no when-not-to-use scenarios described.

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