lrange

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

Without annotations, the description only mentions return type (string) but does not disclose side effects (none), error conditions, bounds behavior, or result format details. Minimal behavioral context.

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?

Very concise (two sentences) but lacks necessary detail. It is efficient but at the cost of clarity.

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 presence of many sibling list tools, no output schema details, and no annotations, the description is incomplete. It fails to clarify Redis index conventions, error handling, or return format specifics.

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 has 3 parameters (name, start, stop) with 0% description coverage. The description does not explain the meaning of start/stop (e.g., inclusive/exclusive, indexing convention), leaving them ambiguous.

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 action ('Get elements'), resource ('Redis list'), and operation ('within a specific range'). It distinguishes from sibling tools like llen, lpop, lpush, etc.

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 on when to use this tool versus other list operations (e.g., lrange vs. llen or lindex). No context about prerequisites or use cases.

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