Get possible upgrade services

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, but the description adds nothing beyond that: no indication of what the result set represents, whether it depends on current subscription state, or how large/volatile it might be.

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 not informative — a single fragment that repeats the tool name and parameter name without conveying any operational meaning. Brevity here comes from under-specification rather than efficiency.

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 catalog lookup with one parameter this could be adequate, but the description never says what the returned services are for, when they become available, or what to do with them (e.g., feed into execute_subscription_upgrade). Key context is missing.

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 coverage is 100% with a single required accountId parameter documented as 'ALSO Cloud Account ID'. The description merely echoes the parameter name, 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 is essentially the tool name restated as a sentence: 'GetPossibleServicesForUpgrade for accountId.' It does not explain what a 'possible service for upgrade' is, nor how this differs from siblings such as get_possible_services_for_parent or 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?

No guidance on when to use this tool, no prerequisites, and no mention of alternatives like get_possible_services_for_parent or execute_subscription_upgrade. An agent has to guess the workflow position from the name alone.

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