Set a follow-up reminder

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

With annotations already declaring readOnlyHint=false, destructiveHint=true and openWorldHint=true, the description usefully adds the email/ICS side effect and the return payload (updated tracked job with reminderAt). It does not explain what makes the operation destructive (e.g. overwriting an existing reminder), which is the one gap left against a destructiveHint=true annotation.

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?

Front-loaded with the core action in the first sentence, then clearly sectioned Input/Output blocks. Slightly padded by duplicating schema parameter text verbatim, but every line is scannable and nothing is buried.

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?

An output schema exists, so explaining return values is optional, yet the description summarizes the reminderAt field, which is helpful rather than harmful. Combines with annotation coverage to give an agent everything needed to invoke the tool correctly, minus any note on idempotency/overwrite behavior.

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 both parameters are already fully documented with identical wording (ISO 8601 example, distinct-ID warning). The description restates the schema rather than adding new syntax or constraints, so the baseline of 3 applies.

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?

States a specific verb and resource ("Sets a reminder for a tracked job") and adds the concrete side effect of sending a confirmation email with an .ics attachment. This clearly separates it from reminder_list and reminder_delete in the sibling set.

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?

Usage is implied by the title and the note that remind_at must be in the future, but there is no explicit when-to-use/when-not guidance or routing to sibling tools such as reminder_delete or reminder_list. Adequate but leaves the agent to infer context.

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