CryptoAPIs Signer

Verified Integration

Author: @CryptoAPIs-io•Category: ServerApplication

GitHub Repository

JSON-RPC 2.0

Protocol Standard

Sub-second

Execution Latency

Active

Operational Status

Client Configuration

— Connect CryptoAPIs Signer to Claude Desktop or Cursor in seconds

{
  "mcpServers": {
    "cryptoapis-signer": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-cryptoapis-signer"
      ],
      "env": {}
    }
  }
}

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows).

Architecture & Capabilities

System Overview

Provides secure, local transaction signing capabilities across multiple blockchain networks, eliminating the need for external API calls.

Indexed Date

7/23/2026

License

Open Source

Protocol Layer

stdio / SSE RPC

Frequently Asked Questions

Architecture and operational details for CryptoAPIs Signer

You can sign transactions either by providing structured details (e.g., recipient, value, gas limit) or by inputting a pre-built unsigned transaction in hexadecimal format, offering flexibility for different development workflows.

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