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

Annotations already declare readOnlyHint=false and destructiveHint=false, so the safety profile is covered. The description adds real value beyond that by disclosing a server-side validation rule and its error code (422 reviewer_conflict for author/token-subtree reviewers). It omits other behavioral traits such as whether the call is idempotent or what independent=true changes.

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?

Two short sentences with zero filler, and the primary action is front-loaded before the constraint. Nothing is redundant or padded.

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 an 8-parameter tool with no schema descriptions, the description covers only a fraction of what an agent needs to call it correctly. An output schema exists so return values need not be explained, but the meaning of kind, rubric, due_at, and independent is entirely missing.

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% across 8 parameters, so the description must compensate and largely fails to. Only doc_key, version, and reviewer receive any implied meaning; kind (review/red_team/second_opinion), due_at, rubric, namespace, and independent are never explained anywhere.

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 ("Open a peer_review task") plus the scope (one version of a document) and the reviewer identity forms (agent:/human:/role:). An agent can tell what it does without opening the schema. It does not, however, distinguish itself from the sibling request_human_review or submit_peer_review, which sound closely related.

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?

One genuine exclusion is given: the author and its token subtree cannot review (422 reviewer_conflict). That is useful when-not guidance. There is no positive guidance on when to pick this over request_human_review versus submit_peer_review, so the routing decision is left to inference.

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