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Google Workspace MCP Server

Google Workspace MCP Server

by epaproditus
OverviewSchemaSourceRelated ServersDiscussionsAdmin
JavaScript
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list_emails

List recent emails from your Gmail inbox, filtering by search query or max results.

Instructions

List recent emails from Gmail inbox

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {},
    "name": "list_emails"
  }
}

Input Schema

NameRequiredDescriptionDefault
queryNoSearch query to filter emails
maxResultsNoMaximum number of emails to return (default: 10)

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.1

TDQS

B3.1/5.0
Behavior2/5

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It only states 'list recent emails', omitting crucial details such as required authentication, rate limits, output format (e.g., headers vs full content), and potential side effects.

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 a single concise sentence with no wasted words. However, it omits important details that could be included without much expansion, slightly reducing its efficiency.

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 sibling tools (especially 'search_emails'), the description fails to clarify when to use this tool versus searching. It also lacks return value details, pagination, and recency definition, making it incomplete for a tool with no output schema.

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?

Schema coverage is 100% with both parameters described ('query' for filtering, 'maxResults' with default). The description adds no additional meaning beyond what the schema provides, so baseline 3 is appropriate.

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 'List recent emails from Gmail inbox', specifying the verb and resource. However, the term 'recent' is vague, and there is no differentiation from the sibling tool 'search_emails' which likely supports similar queries.

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

Usage Guidelines3/5

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

The description implies usage for listing recent emails but does not provide explicit guidance on when to use this tool versus alternatives like 'search_emails' or 'modify_email'. No 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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