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

Annotations already declare readOnlyHint=true, covering the non-mutating behavior. The description adds contextual detail about 'current period' and specifies the returned data (counts and limits), but it does not disclose other behavioral aspects such as authentication requirements, response size, or potential errors. Since annotations already carry the safety profile, the description contributes modestly but not extensively beyond them.

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 a single, compact sentence that conveys the essential purpose without any extraneous words. It is front-loaded with the resource and data type, making it efficient for an agent to parse.

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 the tool's simplicity (zero parameters, no output schema, read-only annotations), the description fully specifies what the tool retrieves (counts and limits for the current period). There is no missing information that an agent would need to call it correctly.

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 has zero parameters, so schema coverage is trivially 100%. The description does not need to explain any parameters, and the baseline for zero-parameter tools is 4. It does not add parameter information, but none is required to use the tool correctly.

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 the resource ('current period's post/idea counts and plan limits') and the implied action of retrieving usage data. It distinguishes itself from sibling tools by focusing on usage/limits rather than specific content entities like folders or posts. However, it lacks an explicit verb like 'get' in the description itself (though the title includes 'getir'), and the scope (e.g., user-level vs workspace-level) is not stated, which keeps it from a 5.

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?

There is no guidance on when to use this tool versus alternatives. While it is the only tool related to usage/limits among the siblings, the description does not explicitly state circumstances for selection, nor does it mention any exclusions or prerequisites. An agent would have to infer its applicability based solely on the resource name.

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