create-excel-chart

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

Annotations already indicate destructiveHint=true and openWorldHint=true, but the description adds no behavioral context beyond stating creation. It does not disclose side effects, permissions, or limitations. With annotations present, the description should provide additional insight but fails to do so.

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 is too terse to be useful. It sacrifices necessary detail for brevity, resulting in under-specification rather than 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?

Given the tool's complexity (6 parameters, nested object, destructive action, no output schema), the description is grossly incomplete. It fails to explain chart types, data source requirements, or the result of the operation, leaving the agent with insufficient information to invoke the tool correctly.

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 high (83% for top-level parameters), so baseline is 3. However, the description adds no meaning to parameters like 'body' or its nested fields (type, sourceData, seriesBy). It does not explain how to configure a chart.

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 'Creates a new chart' is a tautology that restates the tool name without adding specificity. It does not clarify what kind of chart (e.g., Excel chart) or provide context that distinguishes it from other create tools.

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, such as when a chart should be created, what prerequisites are needed, or what inputs are expected. The description is entirely silent on usage context.

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