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

No annotations are provided, so the description carries the full behavioral burden, and it discloses almost nothing. 'Create sheet' implies a mutation, but there is no mention of permissions required, whether an existing sheet is overwritten, what the returned identifier is, or any side effects. The generic 'Run Google sheets action' phrasing adds no behavioral signal.

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?

One short sentence with no wasted words, but the brevity comes from boilerplate rather than precision. The 'Run Google sheets action:' prefix is padding that could be replaced with substantive content at the same length.

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, no output schema, and a single opaque 'detail' parameter, the description is far too thin. An agent cannot tell what the tool actually creates or how to supply meaningful detail, leaving the definition inadequate for correct invocation.

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 100% for the single 'detail' parameter, so the schema already documents it, establishing a baseline of 3. The description adds nothing about how 'detail' maps to sheet creation (naming, tab structure, etc.), but it is not required to when coverage is complete.

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 restates the tool name almost verbatim ('create_sheet' → 'create sheet'), wrapped in a generic 'Run Google sheets action' boilerplate. It does not describe what the created sheet contains, where it is created, or how it differs from siblings like sheets__generate_sheet or sheets__update_sheet. This is close to a tautology.

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 statement of when to use this tool versus the numerous siblings (generate_sheet, update_sheet, delete_sheet, converse). No prerequisites, no exclusions, no alternative routing. The agent must infer usage entirely from the tool name.

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