CussCheck

Find and censor English swear words in text, including disguised spellings like f.u.c.k, sh1t and fuuuck, with each match's position and a censored copy. This is a word-list filter, not AI moderation: it is English only and does not understand context. Free without a key (10 checks/min, 200/day per IP); a free API key gives 1,000 checks/day with commercial use allowed, and submitted text is never stored or logged. Quick start: connect directly to https://profanity-api.mike-tusa.workers.dev/mcp