VATICAN CITY — Pope Leo XIV adopted Anthropic’s AI safety rules as binding Catholic doctrine Wednesday, making violations of the startup’s content policy a mortal sin. His first encyclical, Magnifica humanitas, requires Catholics to follow ‘Helpful, Honest, Harmless’ guidelines and establishes a tribunal to try ‘prompt injection’ as heresy. Anthropic co-founder Dario Amodei received a blessed API key.