PDF Reader MCP vs Relay

In-depth architectural comparison of the PDF Reader MCP and Relay MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

Which MCP Server Should You Choose?

Choose PDF Reader MCP when:

• You need dedicated capabilities in the Developer Tools domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• Primary tools included: inspect, outline, read.

Explore PDF Reader MCP Details

R

Choose Relay when:

• You need dedicated capabilities in the Developer Tools domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• You have access to required keys: RELAY_API_KEY, RELAY_BASE_URL.
• Primary tools included: run_model, upload_file, list_workflows.

Explore Relay Details

Feature & Specification Comparison

Specification	PDF Reader MCP Developer Tools	R Relay Developer Tools
Summary	Evidence-first PDF MCP. Agent Document Twin with citeable page+bbox evidence.	Run any Relay model (image, video, audio, LLM), poll tasks, upload files and search Relay's docs.
Category & Scope	Developer Tools	Developer Tools
Quality signal

Tools & Capabilities Breakdown

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

{
  "mcpServers": {
    "pdf-reader-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@sylphx/anymd"
      ]
    }
  }
}

{
  "mcpServers": {
    "relay-4": {
      "command": "npx",
      "args": [
        "-y",
        "@relaygpu/mcp"
      ],
      "env": {
        "RELAY_API_KEY": "YOUR_RELAY_API_KEY_HERE",
        "RELAY_BASE_URL": "YOUR_RELAY_BASE_URL_HERE"
      }
    }
  }
}

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