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email_verify

Verify email addresses for validity and deliverability. Check if an email exists and is active.

Instructions

[Utility] 邮箱验证 — $0.01/call (free tier: 50/50 today) API: https://goldbean-api.xyz/paid/email-verify

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
emailYes邮箱地址
Behavior1/5

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

No annotations are provided, and the description does not disclose any behavioral traits such as verification method, effects, permissions, or side effects. The agent receives no insight beyond the tool's name.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness3/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is very short but includes pricing and API endpoint. It is not well-structured and reads like a note rather than a clear tool description, lacking a defined structure.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's simplicity, the description fails to explain the output or behavior. Without an output schema, the agent doesn't know what the verification returns (e.g., boolean, details). The description is incomplete.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The schema covers the single parameter 'email' with a Chinese description. Since schema_coverage is 100%, the baseline is 3. The description adds no extra semantic value beyond what the schema already provides.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The name 'email_verify' combined with the Chinese phrase '邮箱验证' clearly indicates the tool verifies email addresses. The description is minimal but the purpose is unambiguous, and it distinguishes itself from siblings as no other tool relates to email verification.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance is provided on when to use this tool versus alternatives. It only states the utility and pricing, lacking explicit context for proper selection.

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

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