Aegis is an open-source, self-hosted AI governance and evidence gateway. It applies request controls, bounded streaming PII redaction, durable audit records, and client-verifiable MMR inclusion proofs to supported LLM routes. Python clients and TypeScript helpers ship as aegis-latent-sdk 4.0.0. GitHub’s Release label is v4.0.1; source and attached package assets remain 4.0.0.