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

Annotations already declare readOnly, idempotent and non-destructive, so the safety profile is covered. The description adds genuinely useful behavior beyond that: the returned field set, newest-first default ordering, and the pagination termination rule (stop on a short page), though it says nothing about auth or rate limits.

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 compact sentences with the resource, returned fields, pagination rule, and endpoint all front-loaded; no filler or repetition of the title.

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?

With no output schema, the description usefully enumerates the returned fields and explains how to page, and the six optional filters are fully specified by the schema. Only the multi-account/email authorization nuance and filter combinations go unaddressed.

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 every parameter (sort, email, pageNum, fileName, pageSize, contentType) is already documented in the schema. The description only adds 'newest first' for sort and the short-page pagination rule, which is baseline-level value on top of a complete schema.

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 and resource (list files uploaded to a Kling account) plus ordering and the fields returned (id, name, type, url). It references the related kling_upload_asset tool, which clarifies provenance, but it does not explicitly contrast itself with other list-style siblings.

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 usage context is implied by 'the files you uploaded' and the pagination hint ('Page until a short page comes back'), but there is no explicit when-to-use/when-not statement and no named alternative for cases such as filtering or retrieving a single asset.

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