Reminders Get Reminder

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

Annotations declare readOnlyHint and idempotentHint, but the description adds no behavioral detail beyond that. It does not disclose what happens on invalid IDs, whether unfilled fields are returned, or any other runtime behavior.

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 short but under-specified rather than genuinely concise. The single sentence merely repeats the tool name and adds no functional information, so it does not earn its place.

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?

Even though this is a simple single-parameter tool with an output schema, the description is not complete enough to call correctly since it never explains what the tool does or how it relates to other reminder tools. It relies entirely on inference from the tool name.

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% and the description does not mention reminder_id at all. The agent is given no semantic context for the parameter beyond its name.

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 only restates the tool name and identifies it as a 'Delegated Apple domain tool' exposed through MCP. It never states the tool's function, such as retrieving a reminder by ID, so it is essentially a tautology.

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 siblings like reminders_list_reminders, reminders_update_reminder, or other reminder tools. No alternatives, exclusions, or context of use are provided.

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