invoices_update_and_schedule_invoice_schedule

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

Annotations indicate readOnlyHint=false (mutation), idempotentHint=false, and destructiveHint=false. The description adds no behavioral detail beyond the verb 'update'. It does not mention side effects, permissions, or what happens to the existing schedule, so it contributes little beyond the annotations.

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 a single, front-loaded sentence that conveys the action efficiently. It is concise with no filler, though it lacks any additional structure or examples.

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 one-parameter mutation tool with schema covering the parameter and annotations covering safety, the description is minimally sufficient. However, it omits any explanation of return values or side effects, and it gives no usage context among the many related invoice schedule tools, leaving some gaps.

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% for the single parameter 'scheduleId', which is already described as 'Schedule Id'. The tool description adds no extra meaning to the parameter, so the baseline of 3 is appropriate.

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 states a specific verb ('Update') and resource ('scheduled recurring invoice'), making the core purpose clear. However, it does not distinguish itself from the sibling tool 'invoices_update_invoice_schedule', which also appears to update an invoice schedule, so it lacks explicit differentiation.

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 to use this tool versus alternatives. No context is provided about prerequisites, the lifecycle of invoice schedules, or how this differs from related operations like 'invoices_schedule_invoice_schedule' or 'invoices_cancel_invoice_schedule'.

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