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. 'Retrieve' implies a read operation, but it does not explicitly guarantee read-only behavior, mention auth/permissions, describe pagination behavior, or explain return shape.

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?

It is short and front-loads the core purpose, followed by use context and sibling equivalence. The 'Essential for...' sentence is mildly promotional but still provides usage context, so it is close to optimally concise.

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 six-parameter read/list tool with no output schema and no annotations, the description covers selection and basic scope. It relies heavily on the rich input schema and does not compensate for the missing behavioral and return-value guidance.

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 device, page, sort, limit, agentId, and departmentId are already well documented in the schema. The description only echoes the agent/department filtering concept and adds no syntax, constraints, or defaults 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 uses a specific verb, resource, and scope: 'Retrieve WhatsApp chats assigned to specific agents or departments.' It also explicitly maps the tool to get_whatsapp_chats with action 'assigned', which helps distinguish it from sibling chat-list tools.

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 gives a clear use case, 'agent workload management and performance tracking,' and identifies its relationship to get_whatsapp_chats. However, it does not explicitly say when not to use it or compare it against the many other chat-list siblings such as status/date/unread variants.

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