email_unsubscribes

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. It implies a read-only query but says nothing about authentication (the required apiKey/restEndpoint params), rate limits, pagination behavior, or the shape of results, all of which matter for an 8-parameter API 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?

One tight sentence with the resource and scope front-loaded and no wasted words. It is efficient, though brevity here edges toward under-specification for an 8-param tool.

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 no annotations, no output schema, 8 parameters, and a dense sibling set, the description is too thin. It omits authentication requirements, pagination semantics, and any differentiation from the many adjacent email/subscription tools an agent could confuse it with.

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 coverage is high (88%), so the schema already documents email, limit, offset, dates, and endpoint. The description adds only the date-range framing that start_date/end_date already imply, contributing little beyond the schema; 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?

States a specific verb (Query) and resource (emails that have unsubscribed) with a scope (within a date range). However, it does not distinguish this tool from closely related siblings like email_hard_bounces, email_subscription_status, or subscription_status_get, leaving the agent to infer the difference between unsubscribes and bounce/subscription events.

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?

The description gives no explicit when-to-use or when-not-to-use guidance and does not name any alternative sibling. Given the crowded email/subscription family, an agent cannot tell from this sentence when to prefer this tool over email_hard_bounces or subscription_status_get.

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