save_structured

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

No annotations are provided, so the description carries the full behavioral disclosure burden. It does well by disclosing that parent directories are created, CSV data must be flat objects, JSON is pretty-printed, and it specifies the return shape. However, it does not mention overwrite behavior or what happens when a path falls outside the allowed root, which are relevant for a file-writing 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 compact and well-structured: a one-line purpose statement followed by Args and Returns blocks. Every sentence carries useful information, and there is no filler or repetition of schema fields without added context.

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 tool with no annotations and only a sparse schema, the description covers the essential usage: all parameters are explained, constraints are provided, and the return value is documented, including the rows edge case. The only notable gap is overwrite behavior and error handling for invalid or out-of-root paths, which keeps it from being fully complete.

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 zero description coverage, so the description must compensate. It fully does: it explains that path is relative to the allowed root, that data is a JSON string with format-specific shape requirements, and that format controls pretty-printing. This adds meaning far beyond the schema's bare names, types, and enum.

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 starts with a clear action: 'Write extracted data to a file inside the allowed root.' It names the resource (file), the action (write), and a key constraint. The sibling tools are all read/list/validation operations, so this write tool is clearly differentiated.

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?

Usage is implied by the verb 'Write extracted data' and by the surrounding sibling tools, but the description never explicitly states when to prefer this tool over alternatives or when not to use it. There is no exclusions or alternative routing, so it relies on the agent inferring that this is the write/save operation among read-only siblings.

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