get_random_activity

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

No annotations are provided, so the description should disclose behavioral traits like read-only nature, side effects, or rate limits. It only mentions the data source is free but does not confirm the operation is non-destructive or provide any behavioral context. This is insufficient.

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 extremely concise: two sentences, each adding distinct value. The first states purpose, the second provides data source and cost. No fluff or repetition.

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 full input schema, presence of output schema, and the tool's simplicity, the description is mostly complete. It could mention that results can be filtered by parameters or that the result is a single random activity, but the schema and output schema likely cover that.

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 coverage is 100% with all parameters described adequately in the schema. The description adds no extra meaning beyond what the schema provides, so baseline score of 3 is justified.

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 clearly states it provides random activity recommendations for passing time or finding inspiration. The verb '获取' (get) and resource '活动推荐' (activity recommendations) are specific. However, it does not differentiate from siblings, but siblings are clearly distinct domains.

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 explicit when-to-use or when-not-to-use guidance is provided. The usage is implied by the tool's purpose (random activities), but alternatives are not mentioned. A score of 3 is appropriate as the context is clear from the tool name.

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