eSign MCP Server

Name: eSign MCP Server
Author: adamanz

@adamanz

Repository

About eSign MCP Server

MCP server for signing PDF documents with signature images. Built upon signpdf by Charlie DeTar.

#esign-mcp #pdf-signing #document-management

Basic information

Config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "esign-mcp": {
      "command": "uv",
      "args": [
        "pip",
        "install",
        "-r",
        "requirements.txt"
      ]
    }
  }
}

Tools

No tools detected

We auto-extract tools from the README. The maintainer can list them under a ## Tools heading to populate this section.

Overview

What is eSign MCP Server?

eSign MCP Server is an MCP (Model Context Protocol) server that provides tools for signing PDF documents by adding signature images at specified coordinates. It wraps the signpdf utility with a modern MCP interface and is intended for developers using AI assistants like Claude Desktop or Claude Code.

How to use eSign MCP Server?

Install dependencies via uv pip install -r requirements.txt and run uv run python mcp_server.py. Configure your MCP client (e.g., Claude Desktop) with the command uv run python /ABSOLUTE/PATH/TO/esign-mcp/mcp_server.py. Use the tools sign_pdf and get_pdf_info with Base64-encoded file content.

Key features of eSign MCP Server

Sign PDF with precise coordinate positioning
Get PDF metadata including page count and dimensions
Support for PNG and JPG signature images
Optional date stamping next to the signature
Base64 encoding for all file transfers
Input validation and descriptive error handling

Use cases of eSign MCP Server

Signing business contracts or agreements on specific pages
Adding digital signatures to PDF documents at precise locations
Obtaining PDF page dimensions before placing a signature
Automating document signing workflows in AI-assisted environments

FAQ from eSign MCP Server

What dependencies does eSign MCP Server require?

Python 3.11+, along with the packages fastmcp, pypdf, reportlab, and pillow. Install via uv pip install -r requirements.txt.

How do I configure eSign MCP Server for Claude Desktop?

Edit claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\) and add an entry with command uv and args ["run", "python", "/ABSOLUTE/PATH/TO/esign-mcp/mcp_server.py"].

What coordinate system does eSign MCP Server use?

PDF standard units (1/72 inch) with origin (0,0) at the bottom-left corner of the page. X increases rightward, Y increases upward.

Can eSign MCP Server run without uv?

Yes, you can use standard pip install -r requirements.txt and then run python mcp_server.py instead of uv run python mcp_server.py.

What should I do if the MCP server doesn't appear in Claude Desktop?

Ensure the path in the config file is absolute, restart Claude Desktop, and check the logs at ~/Library/Logs/Claude/mcp*.log on macOS. Also verify dependencies are installed.

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