SendForSign MCP Server

A Model Context Protocol (MCP) server implementation that integrates with Sendforsign for document template management and signing workflows.

Features

• Template listing and content reading
• Flexible authentication (API keys via env vars or HTTP headers)
• Dual transport support (stdio for MCP clients, HTTP Stream for web APIs)
• Docker ready deployment
• Health monitoring

Installation

Running with npx

env SFS_API_KEY=YOUR_API_KEY SFS_CLIENT_KEY=YOUR_CLIENT_KEY npx -y @sendforsign/mcp

Manual Installation

npm install -g @sendforsign/mcp

Running on Cursor

For the most up-to-date configuration instructions, please refer to the official Cursor documentation on configuring MCP servers: Cursor MCP Server Configuration Guide

To configure SendForSign MCP in Cursor:

1. Open Cursor Settings
2. Go to Features > MCP Servers
3. Click "+ Add new global MCP server"
4. Enter the following code:

   {
     "mcpServers": {
       "sendforsign-mcp": {
         "command": "npx",
         "args": ["-y", "@sendforsign/mcp"],
         "env": {
           "SFS_API_KEY": "YOUR-API-KEY",
           "SFS_CLIENT_KEY": "YOUR-CLIENT-KEY"
         }
       }
     }
   }
   

Running on Windsurf

Add this to your ./codeium/windsurf/model_config.json:

{
  "mcpServers": {
    "sendforsign-mcp": {
      "command": "npx",
      "args": ["-y", "@sendforsign/mcp"],
      "env": {
        "SFS_API_KEY": "YOUR_API_KEY",
        "SFS_CLIENT_KEY": "YOUR_CLIENT_KEY"
      }
    }
  }
}

Running with HTTP Stream Mode

To run the server using HTTP Stream locally instead of the default stdio transport:

# Option 1: Using HTTP_STREAMABLE_SERVER
env HTTP_STREAMABLE_SERVER=true SFS_API_KEY=YOUR_API_KEY SFS_CLIENT_KEY=YOUR_CLIENT_KEY npx -y @sendforsign/mcp

# Option 2: Using CLOUD_SERVICE
env CLOUD_SERVICE=true SFS_API_KEY=YOUR_API_KEY SFS_CLIENT_KEY=YOUR_CLIENT_KEY npx -y @sendforsign/mcp

Use the url: http://localhost:3000/mcp

Configuration

Environment Variables

Required

• SFS_API_KEY: Your SendForSign API key
• SFS_CLIENT_KEY: Your SendForSign client key

Optional

• HTTP_STREAMABLE_SERVER: Set to true to enable HTTP Stream transport
• CLOUD_SERVICE: Set to true to enable HTTP Stream transport (alternative to HTTP_STREAMABLE_SERVER)
• SSE_LOCAL: Set to true to enable HTTP Stream transport (alternative to HTTP_STREAMABLE_SERVER)
• PORT: Server port (default: 3000)
• HOST: Server host (default: localhost)

Usage with Claude Desktop

Add this to your claude_desktop_config.json:

{
  "mcpServers": {
    "sendforsign-mcp": {
      "command": "npx",
      "args": ["-y", "@sendforsign/mcp"],
      "env": {
        "SFS_API_KEY": "YOUR_API_KEY_HERE",
        "SFS_CLIENT_KEY": "YOUR_CLIENT_KEY_HERE"
      }
    }
  }
}

Available Tools

1. List Templates (sfs_list_templates)

List all SendForSign templates for the authenticated client.

Best for:

• Discovering available templates
• Getting template metadata

Usage Example:

{
  "name": "sfs_list_templates",
  "arguments": {}
}

Returns: Array of templates with their keys and metadata.

2. Read Template (sfs_read_template)

Read the content of a specific SendForSign template.

Best for:

• Getting template content for editing or analysis
• Template inspection

Usage Example:

{
  "name": "sfs_read_template",
  "arguments": {
    "templateKey": "your-template-key"
  }
}

Returns: Template content and metadata.

HTTP Stream API

When running in HTTP Stream mode, the server provides REST endpoints:

• GET /health - Health check
• POST /mcp - MCP protocol endpoint

Authentication via HTTP Headers

Send API keys in HTTP headers:

API Key (choose one):

• X-Sendforsign-Key: YOUR-API-KEY
• X-Api-Key: YOUR-API-KEY

Client Key:

• X-Client-Key: YOUR-CLIENT-KEY

Example API Call

curl -X POST http://localhost:3000/mcp \
  -H "Content-Type: application/json" \
  -H "X-Sendforsign-Key: YOUR-API-KEY" \
  -H "X-Client-Key: YOUR-CLIENT-KEY" \
  -d '{"jsonrpc": "2.0", "id": 1, "method": "tools/list", "params": {}}'

Docker Deployment

Build and Run

# Build image
docker build -t sendforsign/mcp:latest .

# Run container
docker run --rm -p 3000:3000 \
  -e CLOUD_SERVICE=true \
  -e SFS_API_KEY=YOUR-API-KEY \
  -e SFS_CLIENT_KEY=YOUR-CLIENT-KEY \
  sendforsign/mcp:latest

Health Check

curl -sS http://localhost:3000/health

Development

# Install dependencies
npm install

# Build
npm run build

# Run development server
npm run dev

License

MIT License - see LICENSE file for details