Get Upcoming Birthdays

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

No annotations are provided, so the description carries the full burden. It implies a read but never states ordering, whether results are grouped by day, what happens when limit_per_day truncates a day, or how timezones/'today' are resolved — all material for a date-window query.

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?

A single sentence with no filler and the time window front-loaded. It is efficient, though its brevity is part of why behavioral detail is missing rather than a virtue in itself.

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 format need not be explained, and all three parameters are schema-documented. However, with no annotations and no sibling differentiation, the description is thin for a tool whose behavior depends on date semantics and candidate filtering.

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 100% and each parameter is documented inline (range 1-30, defaults, category filter). The description only restates the 'N days' concept, adding nothing beyond the schema, so the baseline 3 applies.

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?

States a specific verb and resource ('Get persons celebrating birthdays') plus the time window, so an agent knows what the tool returns. It does not distinguish itself from the sibling get_birthdays, leaving the agent to guess which of the two to call.

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?

There is no when-to-use guidance, no exclusions, and no mention of the sibling get_birthdays or search_person. The agent is given a description but no routing logic for choosing among three overlapping birthday/person tools.

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