kb_compare

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

No annotations are provided, so the description carries full burden for behavioral disclosure. It mentions 'return a structured diff summary' but does not disclose read-only/destructive nature, error handling (e.g., missing IDs), or permission requirements. The behavior beyond the stated action is opaque.

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 communicates the core function. It is well-structured and front-loaded. Minor points off for not including additional helpful details, but no extraneous words.

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 tool has two required parameters, no output schema, and no annotations, the description is insufficient. It does not explain what 'structured diff summary' means, how results are formatted, or any edge cases. A more complete description would include return structure and behavior.

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 description does not explain the parameters 'left_id' and 'right_id' beyond implying they identify knowledge topics. No addition of format, constraints, or role. The agent must guess from parameter names.

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 uses a specific verb ('Compare') and resource ('knowledge topics') and indicates the output ('structured diff summary'). It clearly states the tool's purpose but does not explicitly distinguish it from sibling tools like kb_search or kb_get, though the action is distinct.

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 provides no explicit guidance on when to use this tool versus alternatives. It does not state prerequisites, context, or when not to use it. The agent is left to infer usage from the action verb alone.

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