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 and does not meet it: it never says whether this is a partial or full replacement update, what happens to fields omitted from the call, what permission level is required, or whether an expiration change affects files already referenced in messages. For a mutation tool with zero annotation coverage this is a real 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?

Two compact sentences with the action front-loaded and the field list following. The second sentence's 'better organize and manage your files' is mildly redundant padding, but there is no real bloat.

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 annotations, no output schema, and eight parameters for a destructive-capable mutation, the description should cover update semantics (partial vs. replace), prerequisites, and the effect of permission/expiration changes. None of that is present, leaving an agent under-informed about how to call it safely.

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 all eight parameters are already documented in the schema, which sets the baseline at 3. The description restates six of the seven optional fields at a high level and adds no syntax, constraint, or interaction detail (e.g., that format=ptt applies only to audio), so it adds little beyond the 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?

The description states a specific verb and resource ('Update metadata and properties of an uploaded WhatsApp file') and enumerates the mutable fields, so an agent can distinguish it from read-level siblings like get_whatsapp_file_details or delete_whatsapp_file. It stops short of explicitly naming which sibling to use when, but the operation 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 only usage framing is the vague 'to better organize and manage your files', with no statement of when to choose this over upload_whatsapp_file_from_url, delete_whatsapp_file, or get_whatsapp_file_details. The prerequisite that the file must already be uploaded is only implied by the word 'uploaded'.

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