load_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 explains default naming behavior for df_name and sheet selection for XLSX files, which are useful behavioral traits. However, it doesn't address important aspects like error handling, file size limits, memory implications, or what the output looks like (though there's no output schema).

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 efficiently structured with clear sections (Purpose, Usage Notes), uses bullet points for readability, and contains no redundant information. Every sentence adds value, and the information is appropriately front-loaded with the core purpose stated first.

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 data loading tool with 3 parameters, 0% schema coverage, no annotations, and no output schema, the description provides adequate basic information but lacks important context. It doesn't explain what a DataFrame is in this context, doesn't mention supported file encodings or formats beyond CSV/XLSX, and doesn't describe error conditions or the structure of returned data.

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?

With 0% schema description coverage, the description must compensate. It provides meaningful context for all three parameters: file_path is implied as the data source, df_name gets default naming behavior explained, and sheet_name gets XLSX-specific guidance. The description adds substantial value beyond the bare schema, though it doesn't explain parameter formats or constraints.

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 clearly states the specific action ('Load a local CSV or XLSX file into a DataFrame'), identifies the resource (data files), and distinguishes this from its only sibling 'run_script' by focusing on data loading rather than script execution. The purpose is concrete and unambiguous.

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 implied usage guidance through the 'Usage Notes' section, which explains default behaviors for optional parameters. However, it doesn't explicitly state when to use this tool versus alternatives (like 'run_script') or mention any prerequisites or exclusions. The guidance is helpful but incomplete.

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