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Google-Drive-MCP-Server

Google-Drive-MCP-Server

by pghoya2956
OverviewSchemaSourceRelated ServersDiscussionsAdmin
TypeScript
Local

gdrive_analyze_image

Analyze image files in Google Drive to extract metadata, generate thumbnails, and optionally compute color histograms for quick previews and insights.

Instructions

Analyze image files from Google Drive with metadata and preview generation

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": {
      "fileId": "<fileId>"
    },
    "name": "gdrive_analyze_image"
  }
}

Input Schema

NameRequiredDescriptionDefault
fileIdYesID of the image file to analyze
thumbnailSizeNoThumbnail width in pixels (default: 200)
includeHistogramNoInclude color histogram data (default: false)
generateThumbnailNoGenerate a thumbnail preview (default: true)

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.5.2

TDQS

B3.2/5.0
Behavior2/5

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

With no annotations, the description must carry the full burden of disclosing behavioral traits. It does not state whether the operation is read-only, whether 'generateThumbnail' has side effects like creating or modifying files, or what authentication or permission requirements exist. The description is a single sentence that only paraphrases the tool's purpose.

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, well-structured sentence that immediately states the action and resource. It contains no redundant wording or unnecessary details, making it appropriately concise and front-loaded.

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 tool has 4 parameters, no output schema, and no annotations. The description omits critical context such as return value format, default behavior of optional parameters, whether any data is modified, and potential side effects. This leaves an agent with insufficient information to fully anticipate the tool's behavior, especially for a tool with several configurable options.

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?

All 4 parameters are fully described in the input schema, giving 100% schema coverage. The description itself adds no additional parameter context, but the high coverage justifies a baseline score of 3. It does not explain how parameters like includeHistogram or generateThumbnail influence the output, but the schema already details their basic meaning.

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 uses the specific verb 'analyze' and identifies the resource as 'image files from Google Drive', with the added scope of 'metadata and preview generation.' This clearly distinguishes it from sibling tools like gdrive_read_file, gdrive_search, or gsheets_update_cell, which serve different purposes.

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 explicit guidance on when to use this tool versus alternatives. It does not mention that gdrive_read_file should be used for raw file content or that gdrive_search is for locating files, leaving the agent to infer usage solely from the tool's name and basic purpose.

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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