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 discloses the effect (stops webhook alerts) and the auth mechanism (token), but says nothing about reversibility, whether the subscription is deleted permanently, or what the response looks like. Meaningful gaps remain for a mutation tool with zero annotation coverage.

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 the verb front-loaded and no filler. The second sentence is slightly ambiguous as agent-facing guidance but earns its place by clarifying the email path and token origin.

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 simple one-param tool with no annotations and no output schema, the description covers purpose, token source, and an alternative path. However, it omits the outcome/reversibility of unsubscribing and any indication of the return value, leaving the agent to infer post-call behavior.

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 token parameter has 0% schema description coverage, so the schema adds nothing. The description partially compensates by stating the token originates from subscribe_alerts, but gives no format, length, or validity details. Adds real but incomplete value over 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?

States a specific verb and resource: 'Stop webhook alerts.' It also implicitly pairs with the sibling subscribe_alerts by naming it as the token source, so an agent can map the inverse relationship. The secondary reference to email unsubscription broadens scope slightly, but the core action 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?

Provides an explicit prerequisite ('using the token from subscribe_alerts') and distinguishes the path for email subscribers ('unsubscribe from the link in any email'), which effectively tells the agent when this tool is NOT the right mechanism. Doesn't fully spell out when-not conditions, but the alternative path is named.

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