document_listOpen

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

No annotations are provided, so the description carries the full behavioral burden. 'List' implies a safe read, but nothing states it is read-only, whether a document must already be open, what happens with zero open documents, or what the return contains. For a tool with zero annotation coverage this is a notable gap.

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?

One tight sentence with the resource front-loaded and no filler. Appropriately sized for a trivial list operation, though it is so terse that it forgoes any useful addition.

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 simple parameterless-ish list tool with a fully documented schema, the description is minimally sufficient. It leaves the return format and the read-only nature unstated, which for a no-annotation tool is a mild completeness gap.

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 description coverage is 100% and the single document_id parameter is well documented in the schema (name or 0-based index, defaults to front document). The description adds nothing beyond that, so the baseline of 3 is appropriate.

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?

States a specific verb (List) and resource (currently open InDesign documents), which is clear and actionable. It doesn't explicitly differentiate itself from nearby siblings like document_getInfo or document_getState, but the scope (all open documents) is 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 offers no when-to-use guidance, no prerequisites, and no alternatives. It doesn't tell the agent that this is the discovery step that supplies the document_id accepted by other tools, even though the schema hints at that relationship.

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