Developer Crypto & Encoding Toolkit MCP Server

Developer Crypto & Encoding Toolkit

Produce digests, Base64 transforms, and percent-encoded strings for debugging, interoperability, and data prep. All work runs locally in the platform.

Capabilities

• Cryptographic digests: Compute MD5, SHA-1, SHA-256, and SHA-512 from text in one pass or per algorithm; optional HMAC with a shared secret. Control how text becomes bytes (UTF-8, ASCII, Latin-1) so results match other systems.
• Base64: Encode UTF-8 text to standard and URL-safe Base64 in one call; decode with standard or URL-safe alphabet, with automatic padding repair. Decoded output is returned as UTF-8 text when the bytes are valid UTF-8.
• URL encoding: Percent-encode or decode for whole strings, path segments, query-style values, or form-style segments (where spaces become + on encode and restore on decode).

Gotchas

• Not for passwords: Fast hashes are unsuitable for password storage; use Argon2, scrypt, or bcrypt in application code.
• MD5 and SHA-1: Fine for legacy checksums; prefer SHA-256 or SHA-512 for new security-sensitive uses.
• Encoding matters for hashes: The same visible characters can yield different digests under different byte encodings.
• Base64 decode: Non-text binary payloads cannot be represented as UTF-8 strings; the decode path expects UTF-8 text output after decoding.