validate_x3d_file_tool

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

With no annotations, the description carries the transparency burden. It discloses supported file type (.x3d XML-encoded) and that it works on files on disk, but does not mention read-only behavior, error handling, or return format. For a validation tool, some traits are implied, so a 3 is appropriate.

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 concise and front-loaded with the primary action. The Args section is minimal and clear, with no redundant content.

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 single-parameter tool with an output schema provided, the description covers the essential context: purpose, file type restriction, and parameter definition. It lacks explicit mention of file existence requirements, but that is a minor gap.

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 0% description coverage, so the description must fully compensate. It defines filepath as 'Absolute path to a .x3d file on disk', adding clear meaning beyond the bare type declaration.

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 tool validates X3D files on disk against the official X3D 4.0 schema, providing a specific verb (validate) and resource (X3D file on disk). It distinguishes from sibling tools like validate_x3d by explicitly mentioning 'file on disk' and the .x3d extension.

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 gives a clear use case: 'Use this tool to check existing .x3d files for schema compliance.' It does not mention exclusions or alternative tools, but the context is unambiguous.

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