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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint=false, so the safety profile is covered. The description adds some useful behavioral context such as the 30-day window and private/no-store responses, but most of the remaining text is broad policy boilerplate rather than behavior specific to invoking this read tool.

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 purpose is front-loaded in the first sentence, but the description then expands into many unrelated billing, publishing, security, and retention statements. Those sentences do not earn their place for a simple read-only usage-count tool.

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 one-parameter read tool with full schema coverage and annotations, the description gives enough to identify the call and its 30-day scope. However, without an output schema it does not describe the return shape beyond saying counts are returned, and the extra material is not targeted at call correctness.

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%, and the schema itself explains that base_id is a 64-character ID returned by the API. The description does not add any further meaning about the parameter, so baseline 3 is appropriate.

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 first sentence gives a specific verb and resource: read a base's search and document-read counts over the last 30 days. That is much clearer than the title alone, but the description never distinguishes this from siblings like get_base, list_bases, or index_stats.

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 states account and capacity policies but does not say when an agent should call get_base_usage instead of get_base or another usage-related sibling. There are no explicit exclusions, alternatives, or decision rules.

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