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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety and scope profile is covered. The description adds value by enumerating the four categories of data returned, which annotations cannot convey. It stops short of noting per-user scoping, freshness of 'today's remaining allowance', or whether alerts are summarized vs. full — modest additional context beyond the structured fields.

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?

A single compact sentence with no filler, and the most load-bearing item ('the user's plan') is front-loaded. It reads as a fragment rather than a complete statement of behavior, which slightly undercuts structure.

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 output schema, the description carries the burden of describing return values, and it does list the four data categories. However, it gives no sense of shape or depth (e.g., whether alerts are counts or records, what 'saved / applied' counts measure), and offers no calling context, so an agent still guesses at what it will receive.

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 tool takes zero parameters, so the baseline is 4. There is nothing for the description to disambiguate, and it correctly introduces no phantom inputs.

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 enumerates the exact resource contents — plan, alerts, saved/applied counts, remaining daily allowance — so an agent knows precisely what data this tool surfaces, and that content set distinguishes it from siblings like list_alerts or my_jobs. It lacks an explicit verb ('returns'/'gets'), leaving it a noun phrase rather than a stated 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?

No guidance on when to call this versus alternatives. With siblings such as list_alerts, my_jobs, and past_alerts overlapping on the same data, an explicit routing hint (e.g., 'use this for a single-call account snapshot instead of the individual list tools') would be valuable and is entirely absent.

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