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

The annotations already declare readOnlyHint=true, and the description's 'GET /alerts' is consistent with that. It adds the API endpoint as a small extra behavioral clue, but does not disclose response shape, pagination defaults beyond the schema, or any rate-limit considerations.

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 two short sentences with no wasted words. It front-loads the core action and filtering capability, then supplies the API reference as a useful confirmation.

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 read-only list operation, the description plus rich schema and readOnlyHint cover the essential call context. A return-format description would be helpful since there is no output schema, but the tool's simplicity keeps the gap minor.

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?

All five parameters already have detailed schema descriptions, so the baseline applies. The description's mention of filtering by customer or subscription is a useful summary but does not add meaning beyond the schema-provided parameter documentation.

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 exactly what the tool does: 'List usage/spend alerts' with optional filtering by customer or subscription. It also names the Orb API endpoint, reinforcing the resource. However, it does not explicitly contrast itself with sibling tools, though no sibling tool targets alerts.

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 implies its use case: fetch alerts, optionally narrowed by customer or subscription. It does not explicitly state when to prefer this over an alternative, but since it is the only alert-list sibling, the context is understandable.

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