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

Annotations already declare destructiveHint=true, idempotentHint=true, and readOnlyHint=false, so the safety profile is fully carried by structured data. The description adds nothing beyond that — it does not say whether the removal is reversible, whether it affects notifications or batch entries, or what happens if the id is not watched.

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?

One short, front-loaded sentence with no filler or repetition. It is efficient, though its brevity edges toward under-specification rather than optimal 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 single-parameter tool with full schema coverage and a strong annotation set, the description is minimally sufficient. It omits side effects of a destructive unfollow (notification changes, reversibility) that would require more than the annotations provide.

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 the single parameter documents its own origin ('Dataset id (main.id) from search_catalog'). 'By id' in the description merely restates what the schema already says, so the baseline of 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 ('Unfollow a dataset') and identifies the key by which removal happens. It does not, however, distinguish itself from the closely related siblings add_to_watchlist, add_watchlist_batch, or list_watchlist.

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 purpose implies when the tool applies (removing a dataset the user no longer wants to track), but there is no explicit when-to-use statement, no prerequisites, and no routing to alternatives such as list_watchlist for verification before removal.

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