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 useful content-level disclosure by listing what is returned (usage, remaining posts, URL-blocking status, add-on plan), but says nothing about auth requirements, rate limits, or whether the workspace_id is optional/defaulted.

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?

One front-loaded sentence with no filler; the verb and resource lead and the returned facets follow. The list of facets is slightly run-on but each item earns its place by signaling return content absent from an output schema.

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?

With no output schema, the description correctly compensates by enumerating the returned fields, and the read-only annotations carry the safety profile. Given a single-parameter read tool this is nearly complete; only the optional/default nature of workspace_id and any permission requirements are unaddressed.

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 description coverage is 0% for the single workspace_id parameter. The phrase 'for a workspace' hints at the scope but adds no format, default, or behavior detail. With only one self-explanatory parameter the gap is minor, but the description does not compensate for the missing schema 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 a specific verb (Get) and a specific resource (managed X posting quota) and enumerates the facets returned: usage, remaining posts, URL-blocking status, and add-on plan info. It is distinguishable from generic siblings like get_credits or get_subscription by being X-posting-specific, though it does not explicitly name the nearest alternative.

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 explicit when-to-use or when-not-to-use guidance, and no reference to alternatives such as get_credits or get_subscription that an agent might confuse with quota. Usage is implied by the resource name (check posting quota for a workspace) but left to inference.

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