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VERDICT

VERDICT

by tejcodes-rex
OverviewSchemaSourceRelated ServersDiscussionsAdmin
Python
Local

network_smtp

Extract SMTP envelope and mail header fields (sender, recipient, subject) from a pcap file to identify email communication details.

Instructions

SMTP envelope and mail header fields (sender, recipient, subject).

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "pcap": "<pcap>"
    },
    "name": "network_smtp"
  }
}

Input Schema

NameRequiredDescriptionDefault
pcapYes

Output Schema

NameRequiredDescriptionDefault
resultYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.1.0

TDQS

C2.3/5.0
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 read-only nature, performance, permissions, or side effects. It only lists output fields without describing the tool's operation.

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 a single sentence, making it concise. However, it is front-loaded with output fields but omits the verb, which reduces clarity. It could be improved by adding a verb without adding length.

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 (one parameter, no annotations), the description is incomplete. It does not state what the tool does with the pcap input, leaving the agent uncertain about its functionality and 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 input schema has one parameter 'pcap' with 0% description coverage. The description does not explain the parameter's purpose, format, or constraints, leaving the agent without guidance on how to use it.

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 specifies the resource (SMTP envelope and mail header fields) and distinguishes from sibling tools like network_dns and network_http by focusing on SMTP. However, it lacks a clear verb (e.g., 'extract' or 'parse') to indicate the action performed on the pcap input.

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 explicit guidance on when to use this tool versus alternatives. The tool name and resource imply it is for SMTP analysis, but the description does not provide context on prerequisites or limitations.

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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