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Gemini MCP Server

Gemini MCP Server

by salviz
OverviewSchemaSourceRelated ServersDiscussionsAdmin
JavaScript
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gemini_analyze_pdf

Analyze any PDF: summarize key points, extract data, or get answers to your questions.

Instructions

Analyze a PDF document with Gemini (summarize, extract, answer questions)

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": {
      "pdfPath": "<pdfPath>"
    },
    "name": "gemini_analyze_pdf"
  }
}

Input Schema

NameRequiredDescriptionDefault
modelNoModel name (default: gemini-3.1-pro-preview)
promptNoPrompt for PDF analysis (default: Summarize this document)
pdfPathYesAbsolute path to the PDF file

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv2.0.0

TDQS

A3.5/5.0
Behavior2/5

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

No annotations are provided, so the description carries full burden. It does not disclose read-only nature, side effects, or constraints like file size limits or network requirements. The short description lacks behavioral details.

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 sentence that efficiently conveys the tool's purpose with zero wasted words. It is appropriately sized and front-loaded.

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 analysis tool with a good schema, the description is adequate but incomplete. It lacks information about output format, error handling, or constraints. No output schema exists to supplement.

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 description coverage is 100%, so the baseline is 3. The description adds context about the analysis types (summarize, extract, answer questions) which relates to the prompt parameter, but does not significantly enhance parameter understanding beyond the schema.

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 verb 'Analyze' and the resource 'PDF document', and specifies capabilities including 'summarize, extract, answer questions'. This distinguishes it from sibling tools like gemini_analyze_image or gemini_chat.

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 use for PDF analysis but provides no explicit guidance on when to use this tool vs alternatives such as gemini_analyze_url or gemini_chat. No when-not-to-use context is given.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Deploy Server

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