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

The description explicitly states that the tool is 'Free,' which is a useful behavioral constraint (cost) not present in the structured fields. This adds moderate value beyond the generic data retrieval context.

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?

The description is short and avoids unnecessary jargon, but it is somewhat fragmented across two sentences, and both sentences provide only minimal operational information.

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?

Given the tool's low coverage and lack of an output schema, the definition is incomplete. It does not specify what fields are returned in the delivery history or how the status is presented.

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?

With 0% schema description coverage, the description must provide deep context. It fails to define the role of the 'token' or specify any format constraints beyond what the schema already mandates for the 'id' field.

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 states the goal is to see 'Your alert and its last deliveries,' which implies retrieving status and history. However, it lacks a specific verb (e.g., 'retrieves' or 'lists'), making the purpose slightly vague regarding the exact action.

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?

It only hints at a requirement ('Free with its manage_token'), indicating a dependency. It fails to provide explicit guidance on when to use this tool versus other alert-related tools in the ecosystem.

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