rate_limit_limiter_check

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

The description explains that no tokens are consumed and shows return fields, which is good for a read-only operation. However, it does not mention idempotency, safety, or failure modes, and there are no annotations to supplement.

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 sentence that efficiently conveys the core function and return format. However, it could benefit from more structured layout (e.g., listing parameters or return fields).

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?

While the return shape is summarized, the lack of parameter documentation is a notable gap. Given the tool's simplicity, it is partially complete but requires the agent to rely on parameter names.

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 description provides no explanation for the two parameters (name and cost). With 0% schema description coverage, the agent must infer meaning from names alone, which is insufficient.

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 tool checks if a request is allowed without consuming a token, specifying the verb and resource. It also distinguishes from sibling tools like rate_limit_limiter_consume and rate_limit_limiter_acquire by emphasizing non-consumption.

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 implies use for dry-run checking without consuming tokens, but does not explicitly state when not to use or mention alternatives. However, the context of sibling tools (consume, acquire) makes the usage clear.

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