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Spring Prism

Reversible PII pseudonymization firewall for Spring AI and LangChain4j

Easy to Use

Privacy by Design

Reverses PII into irreversible, cryptographically signed tokens using HMAC-SHA256, ensuring sensitive data never leaves your enterprise boundary.

Focus on What Matters

Zero-Dependency Core

The prism-core engine contains no 3rd-party dependencies, minimizing your attack surface and ensuring high-performance execution.

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Spring AI Native

Seamlessly integrates as a non-invasive Advisor for Spring AI and as decorated chat wrappers for LangChain4j.