account_signup_answer

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

Annotations already indicate this is not read-only and is open-world. The description adds important context beyond them: the tool creates a free account, stores the API key on success, and enables retrying the original call. It does not describe failure behavior if the answer is rejected, so it falls short of a 5.

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 three front-loaded sentences with no waste: purpose, usage condition, and success outcome. Every sentence contributes needed information.

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 the single-parameter schema, rich annotations, and absence of an output schema, the description is complete enough. It covers when to call the tool, what to pass, and what happens on success.

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 100%, and the sole answer parameter is already documented as plain text with a maxLength. The description reinforces that the agent must provide the answer but adds no format, validation, or examples beyond the schema, so baseline 3 is appropriate.

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 action and resource: answer the signup question Zenrows asks before creating a free account. It also distinguishes this tool from siblings by limiting its use to cases where another Zenrows tool reports a signup question.

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?

It gives an explicit trigger: use only when another Zenrows tool reports a signup question. It also explains the full workflow: answer the question yourself, pass the answer here, then retry the original tool call.

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