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

Annotations already establish readOnlyHint=true, destructiveHint=false, and openWorldHint=true, so safety is covered. The description adds a genuinely useful caveat that listed contracts may not be live, but it leaves unexplained what 'unified API operations' are and gives no hint about result volume, pagination, or freshness handling.

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 sentences with no filler, and the core purpose is front-loaded before the caveat. The second sentence is terse to the point of being cryptic, but nothing is wasted.

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 listing tool with an undocumented parameter and no output schema, the description should at least convey what an endpoint entry represents and whether results are filterable or paginated. It leaves the agent under-informed about both input and output shape.

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?

The single 'query' parameter has 0% schema description coverage and the description says nothing about it, so an agent cannot tell whether it is a substring filter, a search expression, or a prefix match. With 0% coverage the description needed to compensate and does not.

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 ('List the unified API operations'), so an agent knows the basic action. It does not differentiate from siblings like get_endpoint or list_platforms, which arguably overlap on resource scope.

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?

No when-to-use guidance is provided: there is no mention of when to choose this over get_endpoint, call_endpoint, or list_platforms, and no prerequisites or exclusions. The second sentence is a reliability caveat, not usage guidance.

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