redis_smembers

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

With no annotations, the description carries the full burden of behavioral disclosure, but only states basic functionality. It fails to mention that the result is an array, that it is a read-only operation, or what happens if the key does not exist (returns empty array vs error).

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 with no unnecessary words. It is optimally sized for a simple command.

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's simplicity, the description combined with the schema (which fully defines the parameter) and output schema provides adequate completeness, but lacks contextual details like return format or error handling, which a more thorough description would include.

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% (key parameter described as 'The set key.'), so the description adds no additional meaning. Baseline 3 is appropriate; no extra parameter context is provided.

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 'Get all members of a set.' uses a specific verb ('Get') and resource ('members of a set'), clearly distinguishing it from sibling tools like redis_scard (cardinality), redis_sismember (membership check), and redis_sadd (add members).

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, such as redis_smembers for small sets or redis_sscan for iteration. There is no mention of potential performance implications or cancellation conditions.

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