iaas_scale_load_balancer

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

Annotations already declare readOnlyHint=false, idempotentHint=false, openWorldHint=true, so the safety profile is partly covered. The description adds nothing beyond restating the endpoint: it does not say this is a mutation that reconfigures an existing LB, does not mention that it is a long-running/asynchronous operation (the /operations/ path implies that), nor what happens to existing NICs/routes not included in the body.

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 short, which is good, but the first two lines are near-duplicates ('Scale operation for load balancer' / 'Second day scale operation for load balancer') and the endpoint line is redundant with the annotation title. Roughly half of the text carries no new 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?

This is a mutation with a large nested body schema, three required nested objects, no output schema, and no annotation-level indication of async/long-running behavior. For that complexity the description is far too thin: an agent gets no signal about what a successful call returns (a request tracker?), how to check completion, or what the scaling effect on existing resources will be.

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 every parameter and nested field is already documented in the schema and baseline 3 applies. The description contributes no additional parameter guidance — it never clarifies that the body appears to require a full load balancer specification (name, nics, projectId, routes) rather than just the fields being changed.

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 names a verb (scale) and a resource (load balancer) plus the underlying endpoint, so the general intent is inferable. However, 'Scale operation for load balancer' / 'Second day scale operation' is vague about what scaling actually means here (adding NICs? changing routes? changing type?), and it does not distinguish this tool from the sibling load balancer tools (iaas_create_load_balancer, iaas_delete_load_balancer, iaas_delete_load_balancer_operation).

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 explicit when-to-use, when-not-to-use, or prerequisite information. The agent has to infer from the name alone that this is the day-2 mutation for resizing/reconfiguring an existing load balancer, and nothing tells it whether a scaled operation must be followed by polling a request tracker or how it differs from a plain update.

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