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

With no annotations, the description carries the full burden. 'Value discarded' is cryptic and does not clarify the output format, side effects, or required permissions. It does not disclose that the tool likely returns only a count and nothing else, and no other behavioral traits are mentioned.

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 short sentence, but it is under-specified rather than concise. It lacks essential information and structure, making it unhelpful despite its brevity.

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 10 optional parameters and no output schema, the description is severely incomplete. It does not explain what the tool returns, which parameter to use, or any operational context. An agent cannot correctly invoke this tool based on the description alone.

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 schema provides 100% coverage of parameter descriptions, so the baseline is 3. However, the tool description does not connect the purpose to any parameter, leaving it ambiguous which parameter contains the PascalCase string. This fails to add meaning beyond the schema and actually introduces confusion.

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 states 'PascalCase hump count' which identifies a counting operation, but it does not specify which of the 10 parameters is the input. It also does not distinguish from sibling count tools like memory-key-count or search-query-len, so an agent cannot tell what makes this tool unique.

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?

There is no guidance on when to use this tool versus alternatives. No conditions, exclusions, or context are given, so an agent has no way to decide if this is the right tool for a task.

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