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

With no annotations provided, the description carries the full burden of behavioral disclosure. It adds only one minimal trait—'Values discarded'—leaving out whether it is read-only, what side effects occur, how it handles the memory context, or any error behavior.

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 short, containing no fluff, but it is under-specified for the complexity it claims to address. Two sentences cannot adequately define a 9-parameter operation, making this under-specification rather than genuine conciseness.

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?

The tool has 9 optional parameters, no annotations, and no output schema, yet the description gives only a vague operation hint. An agent cannot determine which parameter to pass, what the role of 'memory' is, or what the result represents, making the definition severely incomplete.

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. The description adds no additional parameter-level meaning beyond pointing at a JSON object; it does not explain which input actually supplies the object or how the other eight parameters factor in.

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 a clear operation ('Count keys in a JSON object'), but it does not tie the action to the tool's 'memory' context or clarify which of the many schema fields is the intended source. The verb-resource pair is present, but the purpose is ambiguous enough that an agent could misfire, and no distinctiveness against siblings is provided.

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 any of its 27 siblings. The description solely prescribes a generic action, failing to explain suitable conditions, prerequisites, or exclusions.

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