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sigil-mcp

Provide an MCP server for Sigil MPC signing operations.

Updated Jan 17, 2026
Search Tags:#agent#mcp#blockchain#transaction#signing#mpc#sigil
One-click install
npx skills add https://github.com/chippr-robotics/sigil --skill sigil-mcp
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: sigil-mcp
Source: https://github.com/chippr-robotics/sigil/tree/main/.claude/skills/sigil-mcp
Command: npx skills add https://github.com/chippr-robotics/sigil --skill sigil-mcp

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill enables AI agents to securely sign blockchain transactions using the Sigil MPC (Multi-Party Computation) system, acting as a universal signing server.

Core Features & Use Cases

  • Secure Transaction Signing: Sign transactions for various blockchains (EVM, Bitcoin, Solana, etc.) using MPC.
  • Agent Integration: Works seamlessly with Claude Desktop, VS Code, and any MCP-compliant client.
  • Use Case: An AI agent needs to approve a high-value DeFi transaction. It uses the sigil-mcp Skill to securely sign the transaction without exposing private keys.

Quick Start

Start the Sigil MCP server using the command sigil-mcp --transport stdio.

Frequently Asked Questions about sigil-mcp

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do AI agents securely sign blockchain transactions without exposing private keys?▼

AI agents use Multi-Party Computation (MPC) signing to securely authorize blockchain transactions without exposing private keys. The Sigil MCP server facilitates this by exposing EVM and FROST signature tools, ensuring cryptographic security across supported networks.

Can I use an MCP server to sign EVM transactions with Claude Desktop?▼

Yes, you can use an MCP server to sign EVM transactions with Claude Desktop. The Sigil MCP server integrates with Claude Desktop and other MCP-compliant clients via stdio or HTTP transport to handle secure transaction signing operations.

What is the best way to integrate FROST signatures into an AI agent workflow?▼

The best way to integrate FROST signatures into an AI agent workflow is using a Model Context Protocol server. The Sigil MCP server provides dedicated FROST signature tools, allowing agents to securely sign blockchain transactions via stdio or HTTP transport.

Does Multi-Party Computation signing support both EVM and Bitcoin networks?▼

Yes, Multi-Party Computation signing supports EVM and Bitcoin networks. The Sigil MPC system acts as a universal signing server, providing tools for EVM and FROST signatures to facilitate secure blockchain transactions across various networks.

How do I start an MCP signing server using stdio transport?▼

To start an MCP signing server using stdio transport, execute the command `sigil-mcp --transport stdio`. This initializes the Sigil server, enabling AI agents to access address retrieval, disk status checks, and transaction signing tools.

What are the limitations of using a universal signing server for AI agents?▼

A limitation of using a universal signing server for AI agents is the dependency on the server's runtime availability. The Sigil MCP server requires a persistent stdio or HTTP connection to expose tools for EVM and FROST signatures and disk status checks.

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