youfiliate_update_preferences

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

Annotations already provide idempotentHint=true and destructiveHint=false. The description adds that no data is deleted and changes only affect new links, which supplements the annotations without contradiction.

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 three sentences plus a bullet list, efficiently covering purpose, scope, and common errors. Front-loaded with the main action, no wasted words.

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?

Given the output schema exists (return values not needed), the description fully covers what the tool does, its behavioral constraints, and error handling. It is complete for an agent to understand invocation requirements.

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?

The description mentions one parameter (redirect_type) and its valid values. Schema coverage is 0% (parameters not described in tool description), but the schema itself has descriptions for each parameter. The description adds minimal extra meaning beyond the schema, but not for all parameters.

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 'Update your smart link preferences/defaults,' specifying the verb and resource. It distinguishes from siblings like 'youfiliate_get_preferences' (read) and 'youfiliate_create_smart_link' (create) by focusing on preferences.

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 explains that changes apply only to newly created links, guiding when to use. However, it lacks explicit exclusions or alternatives (e.g., for existing links, use youfiliate_update_smart_link). Common errors are listed, aiding correct invocation.

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