Remove a book from a collection

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

Annotations already declare destructiveHint=true and idempotentHint=true, so 'Idempotent' repeats structured data. However, the description adds value the annotations don't carry: the precondition 'Requires write access and Books to be quit' and the scope note that the book survives the removal. These are genuine behavioral context beyond the structured fields.

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?

Front-loads the core action and its key scope caveat in the first sentence, then layers idempotence and prerequisites. The Args block restates parameter names already present in the schema, which is mildly redundant but keeps the definition self-contained and scannable.

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 2-param destructive tool with no output schema, the description covers the essentials: what happens (unlink, not delete), the precondition (write access, Books quit), and idempotence. Nothing critical for correct invocation is missing, though return/error behavior is unstated.

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%, so the description must carry parameter meaning, and it does document both required params (collection_id and book_id) as numeric IDs. This compensates for the schema gap, though the detail is thin – no format, bounds, or example values beyond 'numeric ID'.

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 ('Remove a book from a collection') and immediately disambiguates scope with '(the book stays in the library)'. This distinguishes it from delete_collection and from destructive library-level operations, so an agent can place it correctly without opening a sibling schema.

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 parenthetical clarifies what the tool does NOT do (the book isn't deleted), which implicitly contrasts with destructive siblings, but there is no explicit when-to-use guidance or named alternative (e.g., add_book_to_collection or delete_collection). Usage is implied rather than stated.

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