Base58

Encode and decode base58 and base58check offline, with version bytes and checksum verification, keyless.

Keyless — no signup, no API key, no environment variables.

Install

npx -y @mrfentmen/base58-mcp

Or add it to your MCP client:

{
  "mcpServers": {
    "base58-mcp": { "command": "npx", "args": ["-y", "@mrfentmen/base58-mcp"] }
  }
}

Tools

| Tool | What it does | |---|---| | base58_encode | Encode bytes as base58 or base58check, optionally with a version byte. | | base58_decode | Decode base58 text to hex, base64 and text, verifying the checksum when asked. | | base58_alphabet_info | The base58 alphabet and the common version bytes used with base58check. |

Data source

Runs fully offline — all work happens inside the server with no API calls and no keys.