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

With no annotations provided, the description carries the full burden for behavioral disclosure. It only restates the operation ('Get one') and provides domain context, but does not explicitly confirm this is a read-only operation, mention returned data shape, or discuss any side effects, rate limits, or authorization requirements. This is a notable gap because the description adds no behavioral value beyond the tool's name.

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 extremely concise: two short sentences that immediately state the action and resource, followed by purpose context. Every word earns its place, and the key information is front-loaded in the first sentence.

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?

The description is minimal but minimally viable for a simple get operation. It does not explain the behavior of the detail_profile parameter, the difference between operational and full projections, or what the return value contains. With no output schema and no annotations, the description could provide more context, but the high schema coverage partially compensates. The description is not fully complete but is adequate for a straightforward retrieval tool.

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 high (80% of parameters have descriptions), so the baseline is 3. The tool description itself adds no parameter-specific meaning beyond what the schema already provides. The mention of incremental sync and delivery setup is contextual but does not enrich understanding of the individual parameters like include, query_json, or detail_profile.

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 clearly states the action ('Get one') and the resource ('webhook_subscription'), and adds domain context about incremental sync and delivery setup. It distinguishes this from listing all subscriptions (list_webhook_subscriptions) and from create/update/delete operations, making the purpose unambiguous.

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 implies usage by saying 'Get one' and mentions the domain context, but there is no explicit guidance on when to use this tool versus list_webhook_subscriptions or any mention of prerequisites or alternatives. The context about sync/delivery setup partially suggests intent, but it does not clearly say when to choose this over sibling tools.

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