api_endpoint

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

With no annotations provided, the description carries full responsibility for disclosing behavior, yet it reveals nothing about side effects, authentication requirements, rate limits, or what 'adding endpoint information' actually entails. The phrase 'manually add' is particularly confusing for an automated tool.

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?

While the single sentence is brief (11 characters), it suffers from under-specification rather than efficient communication. The content is placeholder text that earns no informational value, making it concisely useless rather than concisely helpful.

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 tool with minimal parameters and no output schema, the description remains completely inadequate. It provides no actionable information about the tool's function, return values, or operational context, functioning as a template stub rather than a complete definition.

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 coverage is reported as 100% (the single 'param' field has a description, albeit tautological: '参数' meaning 'parameter'). Per guidelines, high schema coverage establishes a baseline of 3. The description adds no additional parameter context, but does not subtract from the baseline.

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 'Please manually add endpoint information according to the RapidAPI page' (translated from Chinese), which fails to specify what action the tool performs (create, update, call?). It reads as a setup instruction for developers rather than a description of runtime behavior, leaving the actual purpose ambiguous.

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?

No guidance provided on when to use this tool, prerequisites for invocation, or how it relates to RapidAPI. There are no sibling tools, but the description still fails to establish any context for appropriate use.

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