Export 2D CAD DXF drawing

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

Annotations declare readOnlyHint=true and destructiveHint=false, but the description leaves the key behavioral question unanswered: does this write a file to disk at destinationPath or return DXF content to the caller? Nothing is said about overwrite behavior, whether an existing file is replaced, or how timeoutMs (default 30s, max 120s) affects a long export. With idempotentHint=false on a file-producing operation, this gap is material rather than cosmetic.

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?

A single front-loaded sentence: verb and artifact first, then content options, then use cases. No filler or repetition. The use-case tail is slightly marketing-flavored but still aids tool selection, so it 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?

For a 7-parameter, zero-required export tool with no output schema, the description covers what is exported but omits what comes back (file path, DXF text, or status) and how scope values "auto"/"schematic" behave. It is adequate to pick the tool, but an agent still has to guess at the result contract before invoking it.

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 description coverage is 86%, so the schema already documents unit, scope, fileName, dxfVersion, and destinationPath. The description's mention of outlines, traces, and drilling holes gives a hint about plausible values for the otherwise loosely typed `layers` array (items just "string", no enum), but it adds no syntax or naming convention for those layer names. Baseline 3 is appropriate since the schema carries most of the load.

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?

States a specific verb and artifact ("Exports 2D CAD DXF drawings") and enumerates what can be included (PCB outlines, copper traces, drilling holes, schematic drawings). That is much clearer than a bare name restatement, but it never distinguishes itself from sibling exporters like easyeda_export_gerber, easyeda_export_pdf, easyeda_export_image, or easyeda_export_3d_model, so the agent must infer the split from external knowledge.

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 downstream use cases (mechanical enclosures, CNC routing, laser cutting, AutoCAD integration) implicitly tell the agent when DXF is the right format versus Gerber or PDF. However, no sibling is named, no exclusions are given (e.g. "not for fabrication output — use export_gerber"), and prerequisites such as an open document are unstated.

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