Create a spreadsheet

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

Annotations already declare readOnlyHint=false, destructiveHint=false, and openWorldHint=true, so the safety profile is covered. The description adds nothing beyond that: it doesn't say where the spreadsheet is created, what permissions/default sharing apply, or what state the caller gets back.

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?

A single efficient sentence with no waste and no burying of the key action. It is arguably under-specified rather than well-structured, but the front-loading is correct.

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 creation tool with no output schema, the description should at minimum indicate what the caller receives back (spreadsheet ID/URL) so the result can be chained into read_range or batch_update. It also omits behavior for duplicate titles and default tab creation, leaving the agent under-informed about a mutating, open-world operation.

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 coverage is 67%: account and sheet_names carry descriptions, but the required 'title' parameter does not. The description contributes no parameter meaning at all, so it neither compensates for the title gap nor improves on the schema.

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 (Create) and resource (Google Sheets spreadsheet), so an agent can immediately tell it apart from read/write/format siblings. However it offers no explicit sibling differentiation beyond the obvious create-vs-modify distinction.

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?

There is no guidance on when to use this tool versus alternatives, no prerequisites (e.g. required scopes or account context), and no mention of what happens if a same-named spreadsheet exists. The agent must infer usage entirely from the name.

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