update_books_metadata_bulk

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

With no annotations provided, the description carries the burden of disclosing behavioral traits. It does disclose the ADMIN permission requirement, which is important. However, it doesn't discuss what 'patch' entails in detail, whether the operation is atomic, how partial failures are handled, or any side effects. The description adds some context but lacks depth for a mutating tool.

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 two sentences, front-loaded with the main purpose and including a critical access note. Every word earns its place, with no redundant or filler content.

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?

The tool has a nested object parameter and an output schema, so the description doesn't need to explain return values. However, it lacks critical context such as supported patch fields, validation rules, or implications for partial updates. As a bulk mutating operation with no annotations, more detail is expected for complete context.

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 schema has no descriptions, and coverage is 0%. The description adds meaning by explaining that the 'updates' parameter is a map of book IDs to patch objects. This is helpful, but it does not specify what fields the patch can contain or validate the patch format. Some compensation occurs, but not enough to fully cover the parameter semantics.

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 action ('Bulk update book metadata'), the resource ('book metadata'), and the input structure ('a map of book ID to patch'). It distinguishes this tool from the sibling 'update_book_metadata' by specifying 'bulk' and the map-based format.

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 implies when to use the tool: when updating multiple books at once, as opposed to the singular 'update_book_metadata'. It also mentions the ADMIN requirement, which is a key usage constraint. However, it does not explicitly name alternatives or provide exclusions, so it falls short of a perfect 5.

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