assign_public_holidays_to_user

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

With no annotations, the description carries full burden. It explains that if the country/region is already used by the organization, the custom set is used; otherwise standard. This adds useful behavioral context. However, it does not disclose whether the assignment is additive or replaces existing holidays, or any side effects like overriding previous assignments.

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 efficient: one sentence for purpose, then a clean Args list with examples, and a final sentence on custom vs standard. No extraneous words; well-structured for quick parsing.

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 simple tool with 3 parameters and no output schema, the description covers purpose, parameter details, and behavioral nuance (custom vs standard). It lacks completeness on the effect of re-assignment or reversal, but is generally adequate.

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 0%, so description must add meaning. It provides examples and format for 'country_code' (ISO 3166-1 alpha-2) and 'region_code' (full region code like 'GB-SCT'). 'user_id' is only described as 'The user's ID', which adds minimal value beyond the schema title. Overall partial but helpful compensation.

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 verb 'Assign' and the resource 'a set of public holidays to a user'. It also mentions enabling them if needed. This distinguishes the tool from siblings like 'book_holiday' (individual booking) and 'get_public_holiday' (retrieval).

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?

No explicit guidance on when to use this tool versus alternatives. The description mentions behavior regarding custom vs standard holiday sets but does not advise on cases where sibling tools like 'action_holiday' or 'book_holiday' might be more appropriate.

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