Serpaix

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Engineering
notes.

Architecture decisions, AI research, and product updates from the Serpaix team.

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ArchitectureMay 202612 min read

Building the World Modeling Engine: Probabilistic Forecasting for Personal Knowledge

How we built a causal simulation engine that predicts future knowledge states based on your capture patterns — and why temporal reasoning required an entirely separate service.

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AIApril 20269 min read

Multi-Hop RAG at the Edge: Running 8 Agents Over a Local Knowledge Graph

The architecture behind Serpaix's multi-agent system: how Research, Graph, and Temporal agents collaborate over a shared memory store without hallucinating connections.

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PrivacyMarch 20267 min read

PII Redaction in Rust: Why We Strip Sensitive Data Before It Leaves Your Machine

A deep dive into the Serpaix LTM daemon's PII redaction pipeline — Sørensen–Dice deduplication, regex-based stripping, and why doing this in Rust matters for latency and trust.

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