set_page_emoji

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

No annotations are provided, so the description must disclose behavioral traits. It indicates a mutation (set) and the clearing option, but it does not mention side effects, auth requirements, error handling, or what happens if the page does not exist. For a write operation, this is insufficient.

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 a single, concise sentence that front-loads the core action and clearing behavior. It wastes no words, though it could include more detail without sacrificing conciseness.

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 tool with three required parameters, no output schema, and no annotations, the description is too sparse. It does not explain the roles of collectiveId and pageId, nor does it describe success/failure behavior or error conditions, leaving the agent underinformed.

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 low (33%); only the emoji parameter has a description in the schema. The tool description adds minimal value beyond restating the emoji purpose. The collectiveId and pageId parameters remain undocumented in both schema and description, forcing the agent to infer their roles.

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 tool sets a single-emoji icon on a page and includes the clearing behavior, making the verb-resource relationship clear. However, it does not explicitly distinguish from sibling tools like set_page_tags, though the different resource (emoji vs tags) provides implicit differentiation.

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 provides no guidance on when to use this tool versus alternatives, nor does it mention prerequisites or exclusions. Given the extensive sibling list (e.g., set_page_tags, set_template_emoji), this lack of guidance reduces usefulness.

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