create_chart

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

No annotations are provided, so the description carries the burden. It describes the tool as generating and returning a configuration object, which implies no side effects. However, it does not explicitly state that the tool is non-destructive or lacks side effects, and it omits any discussion of rate limits or auth requirements.

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 concise with two sentences, no wasted words, and front-loads the primary action. It effectively communicates the core function without unnecessary elaboration.

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 4 parameters and no output schema. The description does not detail the return structure (e.g., what a valid Highcharts JSON looks like) nor any error conditions. It is adequate but lacks depth that would help with complex usage.

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 0% and the description adds no parameter-level detail. The description only says 'structured input' without explaining the meaning of fields like 'type', 'title', 'xAxisCategories', or 'series'. For example, it doesn't clarify that 'type' must be one of the provided enums.

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 clearly states what the tool does: 'Generate a Highcharts configuration object from structured input.' It specifies the verb (generate) and resource (Highcharts configuration object), and differentiates from sibling 'render_chart' by indicating it returns the config JSON that can be rendered elsewhere.

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?

The description implies the tool is for generating chart configuration, but it does not explicitly say when to use this tool versus the sibling 'render_chart'. No guidance on prerequisites or exclusions is provided.

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