Sigil MCP Server

by cdrn Your server? Claim it

local only

Sigil runs on your own machine — the client starts it, so there is no endpoint to ping. 111 installs a week from npm. Last commit 13 Sep 2026.

Local keystore + MCP server. Claude can sign EVM transactions but never sees the private key.

Installs per day peak 207 · avg 28 · -39% w/w

a month agotoday

111

Installs / week

npm · sigild

Stars

7 open issues

13 Sep 2026

Last commit

1 release in 90 days

Apache-2.0

License

TypeScript

Nothing serious here today

Today is the operative word: we check Sigil every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add sigil -- npx -y sigild

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "sigil": {
      "command": "npx",
      "args": [
        "-y",
        "sigild"
      ]
    }
  }
}

~/.codex/config.toml

[mcp_servers.sigil]
command = "npx"
args = ["-y", "sigild"]

.cursor/mcp.json

{
  "mcpServers": {
    "sigil": {
      "command": "npx",
      "args": [
        "-y",
        "sigild"
      ]
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "sigil": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "sigild"
      ]
    }
  }
}

Optional settings from the registry entry, left out of the block above: SIGIL_HOME (Override the default ~/.sigil directory for keyfiles, audit log, and control socket), SIGIL_CONTROL_SOCK (Override the default control socket path (~/.sigil/control.sock)).

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Sigil — questions

Answers built from our own checks of this server.

Why is there no uptime for Sigil?

Sigil runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package sigild was installed 111 times last week.

How do I connect Sigil?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls sigild straight from npm; nothing to host, nothing to sign up for.

How many people use Sigil?

The npm package sigild was installed 111 times in the last week. Week over week that is -39%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is Sigil open source?

Yes — it is published under the Apache-2.0 licence, written in TypeScript, 3 stars on GitHub and 7 open issues. The source link is on this page, so you can read exactly what it does with your data before you connect it.