render_grid

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

With no annotations provided, the description carries full burden. It states it returns a combined image, which is good. But it doesn't disclose whether code is executed, potential side effects, or error handling. The description is minimal and could benefit from more detail, but the tool's purpose is straightforward.

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 two sentences, front-loaded with the key action and resource. Every sentence adds value with no redundancy or filler. It is appropriately concise.

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 simple rendering tool with 5 parameters (1 required) and no output schema, the description provides adequate context. It covers the main functionality and use case. Missing details like error behavior or performance are not critical given the tool's nature.

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?

The description adds little beyond the input schema parameters. It implies grid layout (columns, sizes) but doesn't elaborate on framework or enum values. Since schema description coverage is 100%, baseline is 3. The description doesn't compensate with extra context.

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 the tool renders multiple code snippets in a grid layout and returns a combined image. It specifies the primary use case (comparing components side-by-side), and this differentiates it from sibling tools like render_component or render_catalog which focus on individual or catalog rendering.

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 explicitly says 'Use this to compare components side-by-side', providing clear when-to-use guidance. However, it does not mention when not to use it or suggest alternatives, which would be useful given the many sibling tools.

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