docx.open

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It only says 'open' and gives no indication of side effects, session state, file modification, locking, or errors. An agent cannot anticipate what happens after the call.

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, no-waste sentence with no redundant content. It is very brief, though some may argue it is too sparse to be truly useful; structurally it is clean and front-loaded.

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 two optional-looking parameters, no output schema, and many sibling operations, this description is insufficient. It does not explain when to call it, what inputs to prefer, what a successful open returns, or what subsequent operations become available.

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?

Schema coverage is 100%, and both parameters have clear inline descriptions in the schema. The tool description adds nothing about how path and bufferBase64 relate (e.g., mutually exclusive, precedence, or which to prefer), but the schema already carries the required informational weight.

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 is essentially a restatement of the tool name: 'Open a DOCX document' says little beyond docx.open. It gives no detail about what opening means, what state changes occur, or how this differs from sibling tools like docx.copy or docx.save.

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?

There is no guidance on when to use docx.open versus the many sibling tools. It does not say whether docx.open is a prerequisite, whether it loads a document for editing, or whether alternatives like docx.copy should be used instead in certain scenarios.

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