Workbooks Add Workbook Bookmark

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

Annotations already declare it is a non-read-only, non-destructive, open-world write. The description adds nothing beyond that: no note on permissions required, whether duplicate bookmarks are rejected, or whether the write is idempotent. For a mutation tool it leaves the behavioral profile carried entirely by annotations.

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 front-loaded sentence with no filler, but that brevity comes at the cost of under-specification rather than genuine conciseness — there is simply nothing to trim and nothing to structure.

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?

An output schema exists so return values need not be described, but the tool takes an untyped nested body object with zero documentation, and the description supplies no compensating detail about payload shape or side effects. Not adequate for a write tool whose main parameter is opaque.

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% and the description mentions no parameters at all. Critically, 'body' is an opaque object with additionalProperties=true, so the agent has no idea what fields a bookmark payload requires — the description neither names nor constrains them.

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 ('Add a bookmark to a workbook'), which is unambiguous and distinguishable from the list/get siblings. It does not, however, contrast itself against the nearby workbooks_list_workbook_bookmarks sibling or clarify scope (which workbook-level bookmark set it joins).

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?

No guidance on when to use this versus alternatives (e.g., listing existing bookmarks first, or workbook vs report bookmarks). The agent must infer all context from the name alone.

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