Cancel a scheduled Setell quote send

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

Annotations already provide idempotentHint and destructiveHint. The description adds value by explaining the no-op behavior, return value (previous schedule time or null), and the atomic claim with cron. No contradictions.

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 concise sentences with no wasted words. Front-loaded with the main action, then return value, then no-op and cron details. Efficient.

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 single-parameter tool with good annotations and no output schema, the description covers purpose, behavior, return value, and edge case (no-op). Could mention potential errors or prerequisites, but sufficient.

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% for the single parameter. The description adds 'latest quote' and 'pending schedule cleared', providing slightly more context than the schema, but not significant additional meaning. Baseline 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 clearly states it cancels a pending scheduled send on the latest quote of a job. It uses specific verb 'clear' and resource 'scheduled send', and distinguishes from sibling tools like setell_schedule_send and setell_send_quote.

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?

The description explains that it is a no-op if no schedule is pending, indicating safe idempotent use. It does not explicitly state when to use vs alternatives, but the context is clear: use to cancel a scheduled send. Could be improved by mentioning alternatives like rescheduling.

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