eda_pcb_manufacture_data_get_idx_file

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It does reveal the return type via the signature (Promise<File | undefined>), which hints the file may not exist and the call is non-mutating. But it does not state what happens when the file is absent, whether fileName is required for fetching a specific file, what the windowId/args wrapper means, or any error behavior. Disclosure is minimal and mostly inferred from the type signature.

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 appropriately short and front-loads the call signature, which is good. But it wastes a line with '获取 IDX 文件' followed by 'returns: IDX 文件', which both restate the same information already contained in the name and signature. Minor redundancy in an otherwise compact definition.

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 (one optional param, no output schema), so the bar is lower. Still, the description fails to explain what an IDX file is or when it is needed, how the optional fileName behaves, and how to pass parameters given the args-array wrapper in the schema. An agent cannot reliably compose a correct call without additional inference.

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's args field is a generic 'JSON参数数组' with empty item schema, so it conveys no parameter meaning. The description's signature line (fileName?: string) adds real value by naming the single official parameter, its type, and its optionality. However, it does not explain what fileName refers to (a file name on the board? a path?), and the tools uses a wrapper (args/windowId) that is not reconciled with the documented signature.

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 states the resource (IDX file) and an action (get/获取), so an agent knows roughly what it does. However, the Chinese text is essentially a translation of the tool name itself ('get_idx_file' -> '获取 IDX 文件'), making it near-tautological. It provides no distinguishing information against the dozens of sibling get_*_file tools (gerber, bom, dxf, dsn, etc.), so it is clear but not differentiating.

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?

There is no guidance whatsoever on when to use this tool versus alternatives like eda_pcb_manufacture_data_get_gerber_file or get_manufacture_data. No usage context, no prerequisites (e.g., whether a PCB document must be active), and no indication of when one might need an IDX file. The agent must guess entirely from the name.

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