Crypto

This server gives Claude cryptographic and encoding operations through five tools: hash (MD5, SHA family, HMAC), encode_decode (Base64, URL, HTML entities, hex, binary with auto-detection), generate_id (UUID v4, nanoid, ULID, CUID), password (generation with configurable charsets and strength checking with entropy calculation), and jwt (decode, expiry checks, unsigned token creation). It's built entirely on Node.js crypto without external dependencies. Reach for this when you need Claude to hash API signatures, decode tokens during debugging sessions, generate test identifiers, or analyze password strength. Everything runs locally through stdio transport, so no data leaves your machine.