update_group_preferences

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It usefully states that this is a full replacement (PUT) rather than a partial update, but it omits permissions, reversibility, side effects, and what happens to unspecified fields despite schema defaults.

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 is front-loaded, which is good, but the large keyword list is redundant and bloats the definition without adding real selection value. The description is not appropriately sized for the information it conveys.

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 one-parameter mutation with no annotations and no output schema, the description should explain the body fields, authentication requirements, and full-replacement consequences. It gives the endpoint and replacement semantics, but leaves critical schema details and behavioral context missing.

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% for the single required body parameter. The description never mentions the privateGroup or showAnnouncements fields, their boolean types, their defaults, or the structure of body, so it adds no parameter meaning beyond the generic word 'preference'.

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?

It states a specific verb and resource ('Update Group Preferences') and further scopes the operation as a full replacement via PUT. However, it does not distinguish this tool from siblings such as update_household_preferences or get_group_preferences, and 'preference' singular is vague.

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 explicit when-to-use, when-not-to-use, or alternative-tool guidance. The keyword list provides synonyms only, and the 'Replace (full update)' phrase hints at behavior but does not route the agent between this and related preference tools.

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