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satvikkesarwani

Email Verification MCP Server

mchelp

Provides help and usage examples for verifying email addresses using the Email Verification MCP Server.

Instructions

Show tool help and usage examples

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
topicNo

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

C2.7/5.0
Behavior2/5

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

The description only states the basic function and does not disclose any side effects, permissions, or return behavior. Without annotations, the agent has no information about whether the tool is read-only or has other implications. This lack of transparency could lead to uncertainty.

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

Conciseness5/5

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

The description is a single, concise sentence with no unnecessary words. It is well-structured and easy to read. It maintains high clarity in its brevity.

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?

The description is very minimal and lacks essential context about the tool's output, the meaning of the topic parameter, and any differentiation from siblings. Given the tool's simplicity, the description is insufficient for a fully informed invocation.

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

Parameters1/5

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

The description does not mention the 'topic' parameter at all. The schema provides an enum but no description, so the agent has no explanation of what each topic means or how to use them. This is a significant gap.

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 description clearly states the tool's function: showing help and usage examples. It uses a specific verb and object, making the purpose unambiguous. However, it does not distinguish this tool from siblings, but that is a minor issue.

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?

The description provides no guidance on when to use this tool versus the sibling tools. It does not mention any conditions or scenarios where this tool is preferred. This leaves the agent without explicit usage instructions.

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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