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. It does mention that the query is 'discarded,' which is a useful statelessness/privacy hint, but it does not disclose return shape, error behavior, side effects, or what happens to the other accepted inputs.

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 extremely short and front-loaded, with no filler or repetition. It sacrifices completeness for brevity and is arguably too terse, but it earns points for being a single compact phrase without wasted words.

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?

For a tool with nine optional parameters, no output schema, and no annotations, the description is far too sparse. It does not explain which parameter to supply, what the count represents, or how the operation count relates to GraphQL validation. The schema helps document individual parameters but not the overall invocation context.

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%, so the baseline is 3 even without additional parameter detail in the tool description. However, the description adds no mapping between the GraphQL operation-counting behavior and the nine optional parameters, leaving it unclear which input, if any, should contain the GraphQL query.

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 names a specific resource ('GraphQL operation count') and a behavior ('query discarded'), which is more than a tautology and hints at a counting/validation tool. However, it is a noun-phrase fragment with no explicit verb such as 'counts the number of GraphQL operations in the provided query,' leaving the exact purpose ambiguous.

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 about when to use this tool versus the many sibling counters and shape-check tools. The description does not state conditions, alternatives, or exclusions, so the agent must infer usage from the name and a terse phrase.

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