get_rate_limits

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

With no annotations, the description must disclose behavior. It mentions the return data (requests per minute, tokens per day, context window, plan tier), which is good. However, it does not state that this is a read-only operation, possible error conditions, or authentication requirements, leaving some gaps.

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, front-loaded sentence that efficiently conveys the tool's purpose and output. Every part is meaningful, with no fluff or repetition.

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 no output schema and only one parameter, the description adequately explains the returned data (rate limits, tokens, context window, plan tier) and the input (slug). It is complete for a simple get operation, though more details on return structure or errors could improve it.

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 input schema already provides a description for the required 'slug' parameter. The tool description adds context by explaining that slug identifies the tool (e.g., 'cursor', 'chatgpt'), but this does not go beyond the schema's own description. With 100% schema coverage, the description adds minimal extra value.

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 retrieves rate limits and plan details for AI tools, using the verb 'Get' and specifying the resource. It distinguishes itself from siblings like 'get_api_pricing' and 'get_free_tier' by focusing on rate limits and plan details, not just pricing or free tiers.

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 usage by stating 'for any AI tool', but it does not explicitly state when to use this tool versus alternatives like 'compare_pricing' or 'get_free_tier'. It lacks explicit when-not-to-use guidance, leaving differentiation to the user.

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