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

Annotations already declare destructiveHint=true, idempotentHint=true and openWorldHint=false, so the safety profile is covered; the description adds genuine value on top by naming the immediate effect on deliveries and stating the call is free (no credit cost). It does not, however, say whether deleting an unknown webhookId errors or is a no-op, which matters for an idempotent, destructive tool.

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, front-loaded clauses with zero filler; the highest-value fact (deliveries stop immediately) appears before the secondary billing note.

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 one-parameter deletion tool whose annotations already carry destructiveness and idempotency, and with no output schema to explain, the description covers purpose, consequence, and cost adequately. The remaining gap is how to source the webhookId and the behavior on a missing id.

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% and the single parameter 'webhookId' is completely unmentioned in the description. The name is largely self-explanatory, but the description does nothing to compensate for the missing schema documentation — e.g., it does not say where to obtain the id (autoshort_list_webhooks) or the accepted format.

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 verb and resource ('Delete a webhook') and immediately adds the operational consequence ('deliveries to it stop immediately'), which cleanly separates it from sibling autoshort_create_webhook and autoshort_list_webhooks.

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?

There is no guidance on when to use this versus alternatives, nor any preconditions (e.g., whether the webhook must exist, whether deletion is reversible, whether subscriptions/billing are affected). The only signal is the implied usage from the tool name.

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