billing_node_update

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

Annotations already establish readOnlyHint=false and destructiveHint=false, so the safety profile is covered. The description adds nothing beyond that: it doesn't say whether the update is partial or full-replacement, what happens on unknown UUIDs, whether the operation is idempotent, or what permission level is needed.

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?

A single front-loaded clause with no filler or redundancy. It is efficient, though its brevity borders on under-specification rather than tight conciseness.

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 mutation tool that reschedules billing across a set of nodes, the description omits essential context: what field is being changed, whether it is a bulk operation, side effects, and error behavior. Annotations cover safety but not operational semantics, and there is no output schema to fill the gap.

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 0%, so the description carries the burden of explaining 'uuids' and 'nextBillingAt'. It mentions neither, nor does it explain the array semantics (bulk update) or the date-time format expectations. Only the self-explanatory parameter names provide any signal.

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 gives a specific verb+resource ('Update ... billing nodes'), so an agent knows this mutates billing node records. It does not differentiate itself from siblings like billing_node_create or billing_node_delete, but the tool name and the verb+resource combination make the purpose legible.

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, no prerequisites, and no mention of alternatives such as billing_node_create, billing_node_delete, or billing_nodes_list. The agent must infer usage entirely from the name.

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