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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is fully covered structurally. The description adds only the enumeration of what the ACL read surfaces, which is modest added value; it does not mention permissions required or freshness of the ACL data.

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 compact sentence with zero filler, front-loading the verb and the returned ACL components. It is a fragment rather than a full sentence, but nothing is wasted.

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 is present, so return values need not be re-explained, and the annotations carry the safety profile. For a single-parameter read of sharing metadata, the description plus structured fields cover what an agent needs to invoke it correctly.

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%, so the sole parameter (sheetId, uuid) is undocumented in both schema and description. The parameter is largely self-evident from its name and format, so the description's silence is a gap but not crippling; baseline 3.

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 ('Read') and the resource it operates on (a sheet's sharing/ACL data), and enumerates the components returned (users, invitations, team access, publications, owner, ACL version). It is clear what the tool does, though it does not explicitly distinguish itself from near-neighbors such as sheets_get or view_sheet.

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?

The description offers no when-to-use or when-not-to-use guidance and names no alternative. With siblings like sheets_get_team_access-style read tools in the list, an agent gets no routing help from this text.

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