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 it discloses almost nothing: 'retrieve' implies a read, but there is no statement about permissions, rate limits, pagination behavior, or what the response contains despite several include* flags changing the shape. For a 13-parameter tool with zero annotation coverage this is a substantive 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 sentences, front-loaded with the purpose, which is good. But 'Comprehensive tool' and the trailing 'etc.' are filler that dilute rather than inform, and the second sentence largely restates the first.

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 13 optional parameters, no annotations, and no output schema, the description should at minimum clarify what is returned and how the include* flags affect payload size/behavior. The schema covers parameter semantics well, but return-shape and behavior remain implicit.

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 13 parameters are already documented in the schema, including pagination, filters, and the include* toggles. The description merely gestures at status/session-status/search/active-online filtering without adding syntax or interaction details, so the baseline 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 names a specific verb and resource ('retrieve WhatsApp devices') and lays out the scope of query scenarios it covers. It does not, however, distinguish itself from the sibling get_whatsapp_device_details, which an agent could easily confuse with this list-style tool.

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?

It enumerates usage scenarios (all devices, status/session-status filters, search, active/online only), which implies when to call it. But there is no explicit when-not guidance and no mention of the sibling get_whatsapp_device_details as the alternative for single-device lookups.

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