Cipher API
Encode and decode classical ciphers and alphabets as an API — Morse code, ROT13, the Caesar shift (with any shift 1-25), Atbash, the NATO phonetic alphabet, leetspeak, A1Z26 (letters to numbers) and string reversal. Send text and a cipher and get the transformed string back, or decode it again — most are perfectly reversible. Everything runs locally, so it is fast and always available. Ideal for puzzle and escape-room games, ARGs, treasure hunts, education and coding lessons, retro and hacker-themed UIs, and chat bots. For base64/hex/URL encodings use the Encoding API; for cryptographic hashes use the Hash API.
api.oanor.com/cipher-api
