usage_overview

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

With no annotations provided, the description carries the full burden. It discloses that request metrics exclude certain endpoints (console, billing, usage, user-management), which is good. However, it does not explicitly state that this is a read-only operation with no side effects, though it is implied.

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 concise, consisting of two sentences with no extraneous information. The main purpose is front-loaded in the first sentence, and the second sentence adds a key detail about request limits.

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 that there is no output schema, the description provides a reasonable sense of what is returned (billing snapshot, request and credit metrics). It could be more specific about the default time range and the recency of metrics, but overall it is sufficient for a simple tool.

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 100%, with each parameter described (from, to, range). The description does not add additional semantic information beyond the schema, such as stating that range defaults to current billing period. Baseline 3 is appropriate as schema does the heavy lifting.

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?

Description clearly states the verb (Get) and the specific resource (current user's usage overview). It distinguishes from sibling tools like usage_timeseries and usage_endpoints by specifying it returns a billing snapshot plus request and credit metrics, limited to product API traffic.

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?

Description implies usage for obtaining a holistic overview of the authenticated user's usage, but does not explicitly state when to use this tool over siblings like usage_timeseries or usage_endpoints. It provides clear context on what it returns, but lacks exclusions or alternatives.

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