MCP Signer MCP Server

by cryptoapis-io Your server? Claim it

local only

MCP Signer runs on your own machine — the client starts it, so there is no endpoint to ping. 162 installs a week from npm. Last commit 30 Jul 2026.

MCP server for local transaction signing on EVM, UTXO, Tron, and XRP — no API calls needed

Installs per day peak 43 · avg 26 · +91% w/w

a month agotoday

162

Installs / week

npm · @cryptoapis-io/mcp-signer

Stars

0 open issues

30 Jul 2026

Last commit

0 releases in 90 days

MIT

License

TypeScript

Nothing serious here today

Today is the operative word: we check MCP Signer 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 mcp-signer -- npx -y @cryptoapis-io/mcp-signer

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

{
  "mcpServers": {
    "mcp-signer": {
      "args": [
        "-y",
        "@cryptoapis-io/mcp-signer"
      ],
      "command": "npx"
    }
  }
}

~/.codex/config.toml

[mcp_servers.mcp-signer]
command = "npx"
args = ["-y", "@cryptoapis-io/mcp-signer"]

.cursor/mcp.json

{
  "mcpServers": {
    "mcp-signer": {
      "args": [
        "-y",
        "@cryptoapis-io/mcp-signer"
      ],
      "command": "npx"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "mcp-signer": {
      "args": [
        "-y",
        "@cryptoapis-io/mcp-signer"
      ],
      "command": "npx"
    }
  }
}

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MCP Signer — questions

Answers built from our own checks of this server.

Why is there no uptime for MCP Signer?

MCP Signer 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 @cryptoapis-io/mcp-signer was installed 162 times last week.

How do I connect MCP Signer?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It runs locally, so the command pulls @cryptoapis-io/mcp-signer straight from npm; nothing to host, nothing to sign up for.

How many people use MCP Signer?

The npm package @cryptoapis-io/mcp-signer was installed 162 times in the last week. Week over week that is +91%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is MCP Signer open source?

Yes — it is published under the MIT licence, written in TypeScript and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.