keccak-mcp
An MCP (Model Context Protocol) server that provides Keccak cryptographic hash tools.
Tools
keccak_hash
Compute a Keccak hash of the given input.
Parameters:
| Parameter | Type | Default | Description | | ---------- | -------- | ------------- | ------------------------------------------------------------------------ | | input | string | — | The input string or hex-encoded bytes to hash | | variant | enum | keccak-256 | Keccak variant: keccak-224, keccak-256, keccak-384, keccak-512 | | encoding | enum | utf8 | Input encoding: utf8 (UTF-8 string) or hex (hex-encoded bytes) |
Response:
{
"variant": "keccak-256",
"encoding": "utf8",
"input": "hello",
"hash": "0x1c8aff950685c2ed4bc3174f3472287b56d9517b9c948127319a09a7a36deac8"
}Note:
keccak-256is the variant used by Ethereum (distinct from SHA3-256).
Installation
npm install
npm run buildUsage
Run directly
npm startUse as a CLI binary
node dist/index.jsMCP Client Configuration
Add the server to your MCP client configuration. The server communicates over stdio.
Claude Desktop (claude_desktop_config.json)
{
"mcpServers": {
"keccak-mcp": {
"command": "node",
"args": ["${workspaceFolder}/dist/index.js"]
}
}
}VS Code (.vscode/mcp.json)
{
"servers": {
"keccak-mcp": {
"type": "stdio",
"command": "node",
"args": ["${workspaceFolder}/dist/index.js"]
}
}
}Development
# Build TypeScript
npm run build
# Build and run
npm run devDependencies
@modelcontextprotocol/sdk— MCP server frameworkjs-sha3— Keccak / SHA-3 hash implementations
License
ISC
