format_javascript

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

Minimal behavioral disclosure. The description does not clarify whether the tool returns formatted code or modifies files, and annotations (readOnlyHint=false) contradict the typical read-only nature of code formatting.

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?

Very concise single sentence. However, it could incorporate a brief note about return value without increasing length much.

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 lack of an output schema, the description should mention that the tool returns the formatted code as a string. It also omits any error handling info. Overall incomplete for a transformation tool.

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 coverage is 100%, so the description does not need to elaborate extensively. However, it adds no extra meaning beyond what the schema already provides (e.g., default of indentSize or allowed values of type).

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?

Clearly states the verb (format/beautify) and resource (JavaScript/CSS code). However, it does not distinguish from sibling tool 'format_css' which likely only handles CSS, leading to potential confusion.

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 on when to use this tool versus alternatives like 'format_css' or other formatting tools. The description lacks context for selection.

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