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

Annotations already declare readOnly=false, idempotent=true, destructive=true, openWorld=false. The description adds genuinely new behavioral context: Startup-or-higher entitlement, dual read/write consent, a stable idempotency key, and exact-intent confirmation, plus explicit side-effect exclusions. The concurrency note (use current revision) further clarifies mutation behavior.

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?

Four tight sentences, front-loaded with the core action and immediately followed by what it does not do. Every sentence carries load; density is high but no filler.

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?

With an output schema handling return values and annotations covering the safety profile, the description supplies the missing pieces: permissions, consent requirements, idempotency, confirmation, and concurrency semantics. Only per-parameter identification of project_id/close_id is left thin.

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 description must carry parameter meaning. It does partially compensate: 'stable idempotency key' maps to idempotency_key, 'exact-intent confirmation' to confirmation_token, and 'use its current revision' to expected_version. However project_id, close_id, and report_id (nested payload) are never explained, leaving gaps.

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: 'Save an exact approved report revision as a private Company Library document.' The 'approved' qualifier distinguishes it from a raw save, but it doesn't explicitly contrast with the sibling save_report or approve_report, leaving some overlap to inference.

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?

Gives clear context via exclusions ('does not send a message or refresh an investor room') and a precondition to 'Read current state and use its current revision when changing an existing record.' It stops short of naming the alternative tools to use for sending or refreshing, so it's a strong 4 rather than a 5.

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