excel_save_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 states the action ('Save') which implies a write operation, but doesn't cover critical aspects like whether it overwrites existing files, requires specific permissions, handles errors, or confirms success. This leaves significant gaps in 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?

The description is a single, clear sentence with no wasted words, making it highly concise and front-loaded. It efficiently conveys the core action without unnecessary elaboration, earning full marks for structure.

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 the tool involves a write operation with no annotations, no output schema, and minimal parameter documentation, the description is insufficient. It doesn't address behavioral risks, return values, or error handling, leaving the agent with incomplete context for safe and effective use.

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 1 parameter with 0% description coverage, and the tool description doesn't mention any parameters. Since there's only one parameter and no schema details, the baseline is moderate, but the description fails to add any meaning, such as explaining what 'filePath' represents or its format.

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 action ('Save') and resource ('current workbook to a file'), making the tool's purpose understandable. It doesn't explicitly differentiate from sibling tools like 'excel_close_workbook' or 'excel_create_workbook', but the verb 'save' is specific enough to imply persistence of existing content versus creation or closure.

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 no guidance on when to use this tool versus alternatives, such as whether it's for saving changes after edits or as part of a workflow with 'excel_create_workbook'. It lacks context on prerequisites, like needing an open workbook, or exclusions, making it minimally helpful for decision-making.

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