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

The annotations already declare readOnlyHint=false, destructiveHint=true, and idempotentHint=true. The description adds useful behavioral context beyond those annotations by stating that already recorded responses are preserved, clarifying what the destructive-looking close operation does not destroy.

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?

The description is two short, front-loaded sentences with no filler. Every sentence contributes directly to understanding the action and its effect.

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 simple one-parameter mutation, the description is largely complete: the annotations cover safety behavior and an output schema exists for return details. It adds the key preservation behavior but does not elaborate on close semantics versus other review lifecycle states.

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?

The schema has 100% description coverage for the single id parameter ("Resource id."). The description adds no additional meaning about the id parameter beyond what the schema already documents, so the baseline of 3 applies.

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 uses a precise verb and resource: "Close a pending review link." It clearly distinguishes this mutation from sibling read/create tools like get_review and create_review, and adds the scope of "pending review link."

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 phrase "pending review link" gives clear context that this applies to reviews still open, implying it is not for completed or already closed reviews. It does not explicitly name alternatives or exclusions, but the usage context is clear enough for an agent.

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