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

No annotations are provided, so the description carries the full burden of behavioral disclosure. The verb 'update' at least implies a mutation, but the description says nothing about required permissions, what fields can change, reversibility, or side effects on existing sheet content.

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?

It is a single short sentence with no wasted words, but it is under-specified rather than concise — the brevity comes from omitting information rather than from efficient phrasing.

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 mutation tool with no annotations and no output schema, the description should disclose at least what is being modified and any prerequisite context. Instead it offers only a generic action wrapper over a single vaguely named 'detail' parameter.

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?

There is a single parameter whose schema description coverage is 100% ('Task-specific details from the objective'), so the schema already documents it. The description adds no additional meaning about what 'detail' should contain, which matches the baseline 3 for high schema coverage.

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 pairs the verb 'update' with the resource 'sheet', which is enough to separate it from create/delete/get/generate siblings by inference. However, the phrasing 'Run Google sheets action: update sheet' is a generic wrapper that restates the tool name rather than stating what is actually updated, so the purpose is only vaguely specified.

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 the many siblings (create_sheet, delete_sheet, get_sheet, generate_sheet, converse). No preconditions, alternatives, or exclusions are mentioned.

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