AI agent cracks a 484-year-old Vatican cipher that no one had solved for ~500 years
craigsdennis · x · 2026-09-17
Developer simon used OpenCode to crack a cipher in a secret Vatican letter from 1542 that had gone unsolved for nearly 500 years. The reposter notes the process was far more involved than just pointing an AI coding agent at it — but it shows the kind of capabilities now available to everyone.
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