file-handler

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 but offers none. It doesn't indicate whether this is a read or write operation, what permissions might be required, whether it's destructive, what side effects it might have, or how it handles errors. The description is completely inadequate for understanding the tool's behavior.

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?

While technically concise with just three words, this description represents under-specification rather than effective brevity. The single phrase 'FileHandler tool description' fails to communicate essential information and wastes the opportunity to provide meaningful guidance. True conciseness requires delivering maximum information in minimal words, which this description does not achieve.

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?

Given that there are no annotations and no output schema, the description should compensate by providing comprehensive information about the tool's purpose, behavior, and usage. Instead, it offers only a tautological restatement of the name. This is completely inadequate for a tool with one parameter and no structured behavioral metadata.

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 input schema has 100% description coverage, with the single parameter 'message' documented as 'Message to process'. The description adds no additional parameter information beyond what the schema already provides. According to scoring rules, when schema_description_coverage is high (>80%), the baseline is 3 even with no param info in the description.

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 'FileHandler tool description' is a tautology that merely restates the tool name with minimal elaboration. It provides no specific verb or resource information, and fails to distinguish this tool from its siblings (api-client, data-processor, example_tool, my-tool). This offers no meaningful guidance about what the tool actually does.

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 provides absolutely no guidance about when to use this tool versus alternatives. There's no mention of appropriate contexts, prerequisites, or comparisons to sibling tools. The agent receives zero information about when this tool should be selected over other available options.

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