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

Adds real context beyond the annotations: it states the outcome (no order, no charge, schedule advances) and the reversal path. The non-idempotency declared by idempotentHint=false is not spelled out (e.g. that repeated calls skip successive cycles), which is the one behavior an agent could get wrong.

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?

Three dense sentences with the WRITE marker and effect front-loaded, followed by the parameter hint, reversal and endpoint. No filler and nothing repeated from structured fields.

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 with no output schema, it covers effect, default behavior, and reversal, which is what an agent needs to act correctly. Only the multi-call/idempotency semantics and any permission requirement are left implicit.

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%, so all three parameters are already documented, and the description's date note ('omit it to skip the next one') largely restates the schema's own 'default: the next order'. Baseline 3 applies since the schema carries the parameter burden.

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?

Opens with an explicit verb+resource+scope: 'skip one scheduled order of a subscription', distinguishing it from pause/resume/cancel siblings. The consequence clause ('no order and no charge for that cycle') further pins down what 'skip' means here.

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?

Gives a concrete when-condition for the optional parameter ('omit it to skip the next one') and names the inverse tool smartrr_unskip_order. It does not contrast against smartrr_pause_subscription or smartrr_set_next_billing_date, which are the plausible near-alternatives for the same intent.

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