trending_register

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. The word 'pay' implies a financial mutation, which is useful, but there is no disclosure of whether payment is immediate, what authorization (userId) is required, whether the operation is idempotent, or what happens if the slot is unavailable.

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?

One short, front-loaded sentence with no filler, which is structurally clean. However, for a 7-parameter paid mutation tool the brevity crosses into under-specification rather than genuine conciseness.

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 7 undocumented parameters, no annotations, no output schema, and an implied payment step, the description is far too thin for the complexity. An agent has no basis for knowing what to pass for data/computedData or what a successful registration yields.

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 0% across 7 parameters, several of them opaque ('data', 'computedData', 'slot'). The description mentions 'slot' but adds no meaning beyond the parameter name, so it fails to compensate for the complete lack of schema documentation on a paid mutation tool.

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 action on a specific resource: registering/paying for a 'trending slot'. An agent can tell it apart from read-only siblings like trending_list or trending_booking_status. It is slightly muddied by presenting two verbs ('Register / pay') without clarifying whether these are one step or two, but the intent is clear.

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 given, and no sibling is referenced. The description never explains how this relates to trending_options (presumably to pick a slot first) or trending_booking_status (presumably to check the result), leaving the agent to infer the workflow entirely from tool names.

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