Pinnacle Cycles (chaldean)

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

Annotations already declare readOnly, destructive false, and idempotent. The description adds minimal behavioral context beyond stating it 'calculates', which is consistent. It does not describe side effects, auth needs, or limitations, and the interpretive phrase 'life chapters of opportunity' adds no operational transparency.

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 short and includes a group tag and example, but the example contains an extraneous field that may confuse. It is front-loaded but not perfectly structured.

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 gives a high-level idea of the output (four cycles with age boundaries) but lacks details on return format. With no output schema, more explanation would be beneficial. It is adequate for a simple tool among many similar ones.

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?

Although schema coverage is 100%, the description includes an example with an undocumented parameter 'name' (not in schema), which is misleading. It does not clarify the purpose or format of parameters beyond what the schema offers.

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 calculates four Pinnacle cycles with age boundaries, specifying the Chaldean system. The verb 'Calculate' and resource 'Pinnacle cycles' are specific, and the system is indicated in the title and group, distinguishing it from other pinnacles 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 does not provide any guidance on when to use this tool versus alternatives, such as other system-specific pinnacles tools. No prerequisites, exclusions, or context for selection are mentioned.

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