# io.github.CryptoAPIs-io/mcp-signer

> Use this tool when you need to securely sign transactions locally across multiple blockchain platforms, including EVM, UTXO, Tron, and XRP, without relying on API calls, to solve issues of privacy and security in cryptocurrency transactions. It takes in unsigned transactions and outputs signed transactions, enabling offline signing and enhanced control. Ideal for use cases requiring high-security standards and minimal dependency on external services.

Canonical page: https://skillsregistry.net/skills/io-github-cryptoapis-io-mcp-signer  
JSON: https://api.skillsregistry.net/v1/skills/io-github-cryptoapis-io-mcp-signer

## Description

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

## Trust

- **Trust score (0–1):** 0.98
- **Verification tier:** verified
- **Last scanned:** 2026-09-28

## Facts

- **Version:** 0.2.3
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** api-integration
- **Updated:** 2026-09-28

## Source

- **Source listing:** [MCP Registry](https://registry.modelcontextprotocol.io/v0/servers/io.github.CryptoAPIs-io%2Fmcp-signer)
- **Repository:** <https://github.com/CryptoAPIs-io/cryptoapis-mcp-signer>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "io-github-cryptoapis-io-mcp-signer"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/io-github-cryptoapis-io-mcp-signer` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/io-github-cryptoapis-io-mcp-signer/pull`

---
SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt