get_usage

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

No annotations provided, so description must stand alone. It states it retrieves data but omits whether it's read-only, rate limits, or response structure. Basic but not comprehensive.

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, front-loaded with the action, no wasted words. Efficient and clear.

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?

No output schema, so description should detail return values; it does not specify what 'usage statistics' includes. Also missing idempotency and auth details beyond 'authenticated account'.

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?

No parameters exist, schema coverage is 100%. Baseline 3 per guidelines since schema covers all; description adds nothing beyond what schema already conveys.

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 clearly states it retrieves API key usage statistics and subscription details, with a specific verb and resource. The sibling tools (browser sessions, webpage data) are distinct, so no confusion.

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?

Explicitly says 'useful for monitoring consumption limits and understanding remaining quota', giving clear context. Does not mention when not to use, but siblings are unrelated, so no conflict.

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