nexo_skill_compose_candidates

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

With no annotations, the description implies a read-only listing operation but does not explicitly confirm safety, side effects, or potential state changes. The description is adequate for a non-destructive tool but lacks explicit behavioral disclosure.

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 sentence that efficiently communicates the tool's purpose, criteria, and context. It is front-loaded with key information and avoids unnecessary words, though it could be slightly more concise.

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 description does not specify the output format or structure, and there is no output schema. For a tool that returns a list of candidates, details like whether it returns names or IDs are missing, reducing completeness.

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 provides 100% coverage with clear descriptions for all three parameters. The description adds no additional meaning beyond the schema defaults, so parameter semantics are adequately covered by the schema.

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 the tool lists skill pairs that meet specific co-occurrence and success criteria, with a clear verb ('list') and resource ('skill pairs'). It distinguishes from sibling 'nexo_skill_compose' by focusing on detection rather than composition.

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 default thresholds but lacks explicit guidance on when to use this tool versus siblings like 'nexo_skill_evolution_candidates' or 'nexo_skill_compose'. No when-not-to-use or alternative usage instructions are given.

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