set_reminder_completed

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

No annotations are provided, so the description must carry the full burden. It mentions 'using Beijing time for completion' but doesn't explain how that affects behavior (e.g., whether it sets a completion timestamp, how timezone conversion works, or side effects of reopening). The toggling nature is implied but not fully disclosed.

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 a single concise sentence that gets to the point quickly. It is appropriately sized, though it sacrifices some detail for brevity.

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?

Given the simple two-parameter schema and the presence of an output schema, the description is minimally adequate. However, the timezone nuance is under-specified, and for a reversible action (complete/reopen) there is no mention of prerequisites or consequences, leaving gaps for the agent.

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%, so the description must compensate. It hints at the 'completed' boolean via 'Complete or reopen' but does not explicitly map parameters or explain their formats. The schema provides types and defaults, but the description adds minimal value beyond a vague behavioral hint.

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 states a specific action ('Complete or reopen a reminder') and the resource, and mentions 'Beijing time for completion' which adds a distinguishing detail. However, it doesn't explicitly name alternative tools like 'update_reminder' for differentiation, though the phrasing is clear enough.

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 gives no guidance on when to use this tool versus siblings like 'update_reminder' which could also modify reminders. There are no explicit when/when-not instructions or alternative references.

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