Siglio MCP Server

com.esigndev/siglio-mcpv1.1.0

MCP server for Siglio. Lets an AI assistant send documents for e-signature by email or text.

Node.jsstdioofficial registry

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Active8d ago

Install Siglio MCP server

claude mcp add siglio -e SIGLIO_API_KEY='<siglio-api-key>' -- npx -y siglio-mcp

{
  "mcpServers": {
    "siglio": {
      "command": "npx",
      "args": [
        "-y",
        "siglio-mcp"
      ],
      "env": {
        "SIGLIO_API_KEY": "<siglio-api-key>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).

{
  "mcpServers": {
    "siglio": {
      "command": "npx",
      "args": [
        "-y",
        "siglio-mcp"
      ],
      "env": {
        "SIGLIO_API_KEY": "<siglio-api-key>"
      }
    }
  }
}

Settings → Developer → Edit Config (claude_desktop_config.json), then restart.

{
  "servers": {
    "siglio": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "siglio-mcp"
      ],
      "env": {
        "SIGLIO_API_KEY": "<siglio-api-key>"
      }
    }
  }
}

Add to .vscode/mcp.json in your workspace.

{
  "mcpServers": {
    "siglio": {
      "command": "npx",
      "args": [
        "-y",
        "siglio-mcp"
      ],
      "env": {
        "SIGLIO_API_KEY": "<siglio-api-key>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

Configuration

Variable	Required	Secret	Description
SIGLIO_API_KEY	yes	yes	Your Siglio API key. Sandbox keys start with sig_sandbox_ and live keys start with sig_live_. Get one at https://esigndev.com
SIGLIO_ALLOW_LIVE	—	—	Set to true to allow a live key. Without it, live keys are refused and only sandbox keys will run. Leave unset while testing.

Freshness

Active — last maintenance signal 8d ago. The newest of the signals below sets the band.

Last commit (default branch)
no data · GitHub
Latest release
no data · GitHub
Package published
no data · npm/PyPI
Registry entry updated
2026-10-01 · 8d ago · official registry · v1.1.0

FAQ

›How do I install the Siglio MCP server in Claude Code?

Run: claude mcp add siglio -e SIGLIO_API_KEY='<siglio-api-key>' -- npx -y siglio-mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does Siglio require an API key?

Yes. It expects SIGLIO_API_KEY, of which 1 is a secret.

›Can I use Siglio as a remote (hosted) MCP server?

No hosted endpoint is published; it runs locally over stdio.

›Is Siglio in the official MCP registry?

Yes, as com.esigndev/siglio-mcp.