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

The readOnlyHint annotation already signals a safe read operation, and the description adds useful behavioral context: the returned limits are stated as 'güncel' (current), implying they may change and should be fetched fresh rather than assumed. It also scopes the behavior to specific platforms. No contradictions with annotations were found.

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 concise sentences, each earning its place: the first states the operation and scope, the second gives the triggering use case. There is no redundancy or filler.

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 no-parameter, read-only capability fetch, the description provides the essential context: which platforms, what kind of limits, and when to call it. The only minor gap is that without an output schema the exact return structure is not described, but the declared resource ('text and media limits') is specific enough for an agent to invoke and interpret the call.

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 seized, and the schema is empty, so there are no parameter semantics to document. The rubric gives a baseline of 4 for zero-parameter tools, and the description adds no missing param-related information.

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 uses a clear verb ('getirir'/'fetches') with a specific resource: current text and media limits for X, LinkedIn, and Threads. It also names the precise use case, which differentiates it from the other get/list tools in the sibling set.

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 explicitly states when to use this tool: before producing content or preparing publishTargets. It does not mention when not to use it or name alternatives, but there is no obvious sibling alternative for platform capabilities, so the stated usage context is sufficient.

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