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

Annotations already declare readOnlyHint=false, destructiveHint=false, idempotentHint=false, so the safety profile is partially covered. The description adds only the vague 'permanent' qualifier and says nothing about whether renaming is reversible, whether names must be unique, or how the required idempotencyKey interacts with retries despite the mutation being declared non-idempotent.

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 five-word sentence is front-loaded and waste-free, but at this length it is under-specified rather than concise — there is room to add routing and parameter context without bloat.

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 for a four-required-parameter mutation the definition omits idempotency/receipt semantics, name-uniqueness behavior, and any scoping of namedVersionId to a sheet. An agent could not act on this without reading the schema and guessing at conventions.

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 only 50% — sheetId and namedVersionId are bare UUIDs with no description in either schema or description text. The description does not compensate by explaining what a namedVersionId identifies or whether 'name' refers to the version's display name rather than the sheet title, which is a real ambiguity given the shared 'name' parameter in sibling tools.

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 (rename) and a specific resource (named version), which naturally distinguishes it from siblings like sheets_rename, sheets_rename_column, and sheets_rename_folder. The qualifier 'permanent' hints at a distinction from transient/draft versions but is never explained, and no sibling is named explicitly.

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 rename a named version versus creating one (sheets_create_named_version), restoring one (sheets_restore_version), or listing them (sheets_list_named_versions). No preconditions, no mention of uniqueness constraints on the new name.

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