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

The annotations already show that this is a destructive, idempotent, open-world write, and the description adds details the annotations do not: the dashboard review gate before replacing a link, the required OAuth scope, the requirement for a connected account, and tier limits. It does not describe what exactly the link operation changes, such as whether the listing's stored name or fields are altered, which would have pushed it higher.

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 short sentences, front-loaded with the action, then the constraint, then the prerequisites. No filler; each sentence carries operational information.

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 destructive, scope-gated mutation, the description covers the danger and the access requirements well, and an output schema exists, so return values need no explanation. It is still incomplete because syncName is undocumented in both the schema and the description, so the definition leaves a required decision unexplained.

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% on all three parameters, so the description must carry the full burden, and it does not. The two IDs are at least self-explanatory from their names, but syncName is left entirely undefined; an agent cannot tell whether setting it will overwrite the listing name from the cultivar, which is a behaviorally significant gap.

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 states a specific verb and resource: 'Link one listing to a cultivar reference,' making it clear what the tool does. It does not differentiate itself from the sibling tool sync_listing_cultivar_name, and the parameter syncName evidently relates to that tool's purpose, so an agent cannot fully distinguish the two straight away.

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?

It gives prerequisites that matter for deciding whether a call can succeed: a connected account, the catalog:write OAuth scope, and account tier limits. It also states a precondition for replacement, namely that an existing different link must be reviewed in the dashboard first. The explanation never names when to use this tool instead of sync_listing_cultivar_name.

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