cache_stats

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

The description states 'Get' implying a read-only operation, which is appropriate. However, with no annotations, it does not disclose any potential side effects, data freshness, or whether the stats are real-time or cached. For a simple read tool, this is adequate but minimal.

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 conveys the tool's purpose. No wasted words or redundant information.

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 no parameters, no output schema, and a straightforward read operation, the description is mostly complete. However, it could benefit from listing a few example metrics (e.g., hit rate, latency) to set 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?

No parameters are defined in the input schema, so the description does not need to explain them. The baseline score of 4 applies as the description adds no unnecessary information about nonexistent parameters.

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 verb 'Get' clearly indicates a read operation, and the resource is specified as 'cache performance statistics and health metrics'. This is distinct from siblings like 'optimize_cache' (which implies mutation) and 'sync_status' (which focuses on synchronization state), but no explicit differentiation is given.

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 'sync_status' or 'optimize_cache'. The description does not mention prerequisites, exclusions, or typical use cases.

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