Get subscription fields for renew

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

The annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered. The description adds no behavioral context beyond that, such as what is returned, whether any account state is required, or what makes the result renewal-specific.

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 brief, but it is a single tautological fragment rather than a front-loaded explanation. Its concision comes at the cost of useful information, so it is under-specified rather than appropriately structured.

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 read-only, single-parameter getter this could be short, but the output is undocumented and there is no output schema. Given the many sibling tools around subscriptions and renewals, the description does not provide enough context for an agent to confidently choose and invoke it.

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 100%, and the accountId parameter is already documented as the ALSO Cloud Account ID. The description only repeats 'for accountId' and adds no format, scope, or semantic detail beyond the schema, so the baseline 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 essentially restates the tool name and title: 'GetSubscriptionFieldsForRenew for accountId.' It does not explain in plain language what subscription fields are retrieved or why they are specifically for renewal, and it does not distinguish the tool from the nearby get_subscription_fields_for_upgrade.

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?

There is no guidance on when this tool should be used, when it should not be used, or how it relates to alternatives such as get_subscription_fields_for_upgrade, configure_subscription_renew, or reset_default_renew_values. The only usage condition implied is that an accountId is required, which is already obvious from the schema.

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