sigil MCP

A local signing daemon and MCP server that allows AI agents to sign EVM and Solana transactions without exposing private keys to the LLM context. It includes a policy engine for static checks, value caps, and out-of-band confirmation via ntfy, ensuring keys remain encrypted and zeroized on shutdown.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

Community listingLocal stdioSource reviewed; not executedPublished by cdrn

Vendor documentation

What you can do with it

Sign EVM transactions securely via MCP
Sign Solana transactions without key exposure
Enforce signing policies like value caps and allowlists
Integrate secure signing into Claude Code workflows

Source and maintenance

Community listingRegistry 0.0.6

mcp-registry: io.github.cdrn/sigil@0.0.6 Source repository

Maintenance checked: Oct 31, 2026, 10:27 PM UTC

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

sigild 0.0.6

npmnpx

sigild package definition

{
  "version": "0.0.6",
  "transport": "stdio",
  "identifier": "sigild",
  "runtimeHint": "npx",
  "registryType": "npm",
  "environmentVariables": [
    {
      "name": "SIGIL_HOME",
      "description": "Override the default ~/.sigil directory for keyfiles, audit log, and control socket."
    },
    {
      "name": "SIGIL_CONTROL_SOCK",
      "description": "Override the default control socket path (~/.sigil/control.sock)."
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

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Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.

Cursor configuration

{
  "mcpServers": {
    "sigil-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "sigild@0.0.6"
      ],
      "env": {
        "SIGIL_HOME": "<YOUR_SIGIL_HOME>",
        "SIGIL_CONTROL_SOCK": "<YOUR_SIGIL_CONTROL_SOCK>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.

Cline configuration

{
  "mcpServers": {
    "sigil-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "sigild@0.0.6"
      ],
      "env": {
        "SIGIL_HOME": "<YOUR_SIGIL_HOME>",
        "SIGIL_CONTROL_SOCK": "<YOUR_SIGIL_CONTROL_SOCK>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.

VS Code configuration

{
  "servers": {
    "sigil-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "sigild@0.0.6"
      ],
      "env": {
        "SIGIL_HOME": "<YOUR_SIGIL_HOME>",
        "SIGIL_CONTROL_SOCK": "<YOUR_SIGIL_CONTROL_SOCK>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.

Claude Desktop configuration

{
  "mcpServers": {
    "sigil-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "sigild@0.0.6"
      ],
      "env": {
        "SIGIL_HOME": "<YOUR_SIGIL_HOME>",
        "SIGIL_CONTROL_SOCK": "<YOUR_SIGIL_CONTROL_SOCK>"
      }
    }
  }
}

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