Render Component

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

With no annotations provided, the description carries the full burden. It clearly describes the visible behavior (rendering into an inline preview panel) and implies non-persistent preview behavior. It does not explicitly state side-effect-freeness, but the wording is strong enough for a simple render operation.

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?

Two focused sentences with no filler. The primary purpose and usage trigger are front-loaded, followed by the parameter convention and example. Every sentence earns its place.

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 is simple, has only two fully documented parameters, and an output schema is present. The description covers what the tool does, when to use it, and the key parameter format. Nothing essential is missing for an agent to invoke it 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 coverage is 100%, so the baseline is 3. The description adds value by explaining the Storybook storyId convention in plain language with an example, and the schema also documents the theme default. This goes beyond what the raw schema alone provides.

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 uses a specific verb ('Renders') and names both the resource (a Storybook story) and the delivery mechanism (inline preview panel). It clearly explains what the tool does and includes a concrete example for the storyId format.

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 states when to use the tool: 'Use after editing a component file to show the updated result.' There are no sibling tools to contrast against, so the absence of explicit alternatives is reasonable.

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