compare_content

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

With no annotations, the description must disclose behavioral traits but only states a generic comparison action. It does not mention return format, side effects, required permissions, or error handling. The read-only nature is implied but not explicitly stated, leaving significant ambiguity.

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, front-loaded sentence with zero redundant information. It gets straight to the point, making it highly concise and well-structured for an agent to parse quickly.

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?

The tool has 3 parameters with enums and no output schema, yet the description fails to explain what the comparison result looks like (e.g., a report, scores, sorted list) or provide any use-case context. Given the lack of annotations and output schema, this is insufficient for an agent to fully understand tool behavior and expectations.

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?

The input schema has 100% description coverage, with all three parameters (content_ids, content_type, comparison_metrics) adequately described in Chinese. The tool description adds no additional parameter semantics beyond what the schema provides, so the baseline of 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 '比较不同内容的表现和特征' clearly states it compares content performance and characteristics, with a specific verb ('compare') and resource ('content'). This differentiates it from sibling tools such as get_performance_stats or analyze_content_quality, but the phrase 'performance and characteristics' is somewhat vague and could be more specific about content types or metrics.

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 guidance is provided on when to use this tool versus alternatives like analyze_performance or direct comparison. The description lacks any context about prerequisites, when not to use it, or how it relates to sibling analysis tools.

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