Pinnacle Cycles (chaldean)

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

Annotations already declare readOnlyHint, idempotentHint and destructiveHint=false, so the safety profile is covered. The description adds billing context ('10 credits (Tier 1)') and the endpoint, which annotations do not supply, but it says nothing about determinism guarantees, whether the name must be a full birth name, or how the four cycles are bounded.

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 purpose sentence is front-loaded and tight; the bracketed metadata block is templated but each line (group, endpoint, required, cost) carries usable information. Slightly padded by the redundancy of the required-parameters line.

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?

An output schema exists, so return values need not be explained, and annotations cover the safety profile. However, with two undocumented parameters and no guidance on Chaldean-system selection among the many numerology siblings, the definition is only minimally complete for an agent to call it correctly.

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%, and the description only repeats '[Required: name, date]' – information already in the schema's required array. It never explains that 'name' is the full birth name subjected to Chaldean letter reduction or that 'date' is the birth date, leaving both parameters semantically undefined.

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?

Names a specific verb and resource ('Calculate four Pinnacle cycles with their age boundaries') and characterizes the output as 'life chapters of opportunity'. The 'Chaldean system' tag distinguishes it from the pythagorean/vedic/kabbalistic pinnacles siblings, though the description never explicitly routes the agent to those alternatives.

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?

Usage is only implied by the '[Group: Numerology: Chaldean]' tag and the 'life chapters of opportunity' framing. There is no statement of when to prefer this over astroway_numerology_pythagorean_pinnacles or vedic/kabbalistic equivalents, and no prerequisites are given.

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