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

No annotations are provided, so the description carries the full burden. It explicitly states that the output is source code formatted in a Markdown code block and that the tool does not write to disk, which is a key side-effect disclosure. However, it does not mention authentication requirements or any potential failures, though those are less critical for a code generation tool.

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 efficient sentences. The first sentence states the core function, and the second covers the output format and the explicit lack of disk writes. There is no wasted wording or repetition of schema details.

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 code generation tool with a simple purpose, the description is complete: it explains what is produced, how it is returned, and what is not done. The parameters are fully documented in the schema, and the description covers return format since no output schema exists. The only minor gap is not mentioning the nested info object, but the schema handles that.

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 schema has 100% description coverage for all 4 parameters, so the baseline is 3. The description adds no parameter-specific guidance, but none is needed because the schema already thoroughly explains each parameter, including the nested info object and its properties.

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 opens with a specific verb 'Make' and clearly specifies the resource: a non-fungible token per the ERC-721 standard. This immediately distinguishes it from sibling tools stylus-erc20 (fungible) and stylus-erc1155 (multi-token standard).

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 usage for generating ERC-721 token source code but does not explicitly state when to choose this over the sibling tools or mention any exclusions. No reference to alternatives is made, leaving the selection decision to inference from the tool name and standard.

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