complete_tasks

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

No annotations, so the description carries the full burden. It discloses two side effects: 'Updates daily log and task status.' This is useful context beyond the name, but it lacks information on idempotency, error handling, or whether marking completed is reversible (likely via update_task).

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?

Two short sentences, front-loaded with the core action followed by secondary effects. No filler, though could be slightly more explicit about the update scope.

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 no annotations, no output schema, and simple parameters, the description covers the primary behavior and mentions daily log updates. However, it omits bulk-handling semantics, error behavior, and potential impact on other tools, leaving some gaps for a write operation.

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 the schema already documents 'date' and 'task_ids' fully. The description adds no parameter-level detail beyond what the schema provides; 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 states a clear verb+resource: 'Mark tasks as completed' – an agent knows immediately this is a write operation on task status. It does not explicitly differentiate from the sibling update_task, but the specificity of the action (completing) is a strong signal.

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?

No when-to-use guidance, no alternatives mentioned. The agent has no indication of when to prefer complete_tasks over update_task or delete_task, especially for bulk versus single-item operations.

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