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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false, and openWorldHint=false, so the safety profile is covered. The description usefully adds the auth requirement (session cookie plus browser CSRF), which annotations do not express. However, it says nothing about pagination behavior or result shape despite the presence of a cursor parameter.

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?

Two short, front-loaded sentences with no filler. The resource scope comes first and the auth constraint second, which is a sensible ordering, though the brevity contributes to the thinness noted in other dimensions.

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 read-only, single-parameter listing tool with annotations carrying the safety profile and no output schema, the description covers the essential auth requirement but omits what the collection actually contains and how paging works. Adequate but with clear gaps an agent would have to discover empirically.

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%, so the single 'antes' cursor parameter is already fully documented in the schema as an exclusive hex cursor. The description adds no additional meaning about the cursor or pagination semantics, so the baseline of 3 applies.

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 identifies a specific resource ('the private collection of the account') with a scoping adjective ('private'), but supplies no verb and never clarifies it is a listing/retrieval operation. It does not distinguish itself from siblings such as list_document_files, company_documents, or get_document, leaving the agent to infer the relationship from names alone.

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 only guidance is an authentication prerequisite ('Requires the account session (cookie and the browser CSRF)'), which is a how-to-call note, not a when-to-use note. There is no statement of when this tool is preferred over list_document_files, company_documents, or get_document, and no exclusions.

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