Get subscription fields for upgrade

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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered; the description adds nothing on top — no indication of what the returned fields are, whether they must be fed to execute_subscription_upgrade, or any preconditions. No contradiction, but zero added behavioral context.

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?

It is short, but that brevity reflects under-specification rather than economy; the single fragment is not even a complete sentence and front-loads nothing actionable beyond the name.

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 two-parameter read with no output schema, the description still leaves the agent unable to predict what comes back or how to chain into the upgrade execution tools, which is the whole point of this tool. It is inadequate relative to the surrounding workflow.

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%, so accountId ('ALSO Cloud Account ID') and targetProductName ('Technical name of the destination product') are already fully documented in structured data. The description only echoes the parameter names, adding no format or constraint detail — 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 is essentially the tool name with its two parameters appended; 'GetSubscriptionFieldsForUpgrade' does signal a read of subscription fields in an upgrade context, but the sentence adds no explanation of what those fields are or how they differ from get_subscription_fields_for_renew or validate_subscription_fields. This is tautology against the title, not a stated purpose.

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 when-to-use guidance and no mention of alternatives, despite a dense sibling cluster (execute_subscription_upgrade, get_possible_services_for_upgrade, validate_subscription_fields, get_subscription_fields_for_renew). Only the tool's own name implies the upgrade workflow.

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