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sewon-supernova

relation-mcp

List configured mail accounts

list_mail_accounts

Retrieve mail accounts configured for a message box to obtain the mail_account_id needed for replying to emails.

Instructions

List the mail accounts (送信元) configured for a message_box. Use this to discover mail_account_id before calling reply_mail.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
message_box_idNo
Behavior2/5

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 beyond listing accounts. It lacks details on security, pagination, or return format, leaving a gap in transparency.

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

Conciseness4/5

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

The description is concise with two sentences, no redundancy. However, it could be slightly more structured by separating purpose and usage more clearly.

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

Completeness3/5

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

For a simple list tool with one parameter and no output schema, the description adequately covers core functionality and usage intent. Missing context like response characteristics or error handling.

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

Parameters2/5

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

With 0% schema description coverage, the description only implicitly references the parameter by mentioning 'message_box' but does not explain its format, constraints, or how to obtain it.

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

Purpose5/5

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

The description clearly states the tool lists mail accounts configured for a message_box, using a specific verb and resource. It also hints at its purpose in conjunction with reply_mail, distinguishing it from sibling tools.

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

Usage Guidelines4/5

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

Explicitly advises to use this tool to discover mail_account_id before calling reply_mail, providing a clear when-to-use. However, it does not mention when not to use or list alternatives.

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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