complete_reminder

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

With no annotations, the description carries the full burden of disclosure. It does not say whether completion is reversible, whether it is idempotent, what happens when the reminder is already completed or the id is invalid, or whether any permission is required.

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?

A single front-loaded sentence with no filler. Its brevity is efficient, though it edges toward under-specification rather than being padded.

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?

This is a mutation tool with no annotations, an undocumented required parameter, and no behavioral notes. The existing output schema covers return values, but the description still leaves an agent without enough context to call it safely and correctly.

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 single reminder_id parameter has no description. The phrase 'in the unified ledger' hints at where ids originate, but the description does not explain the id format or how to retrieve a valid one.

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 gives a specific verb and resource ('Mark a reminder completed'), which distinguishes it from complete_task and snooze_reminder by object type. The phrase 'in the unified ledger' adds mild scope context but is not explained.

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 call this versus siblings like complete_task, snooze_reminder, or list_reminders. It also does not state prerequisites, such as how to obtain a valid reminder_id.

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