About Custos
We’re building developer-first safety rails for intelligent systems: alignment checks, live monitoring, and actionable ethics tooling that fits your stack.
Trust at the speed of deployment
We empower builders and enterprises to ship with confidence—ensuring AI behaves responsibly under real-world pressure. Custos stands for decentralized control, ethical oversight, and resilient systems.
Tested. Trusted. Transparent.
A world where every intelligent system is continuously tested and observable— with human-centric guardrails visible to operators and auditors alike.
What we’re building
Live HRV-style alignment stream, violations, and exports (JSON/CSV/PDF) for compliance & post-mortems.
Learn moreA lightweight Python client for evaluation + auto-logging. Drop-in decorators and heartbeats for continuous oversight.
Get startedModular policy engine + ethics registry to evaluate prompts/responses and detect evasive or unsafe patterns.
Browse productsOur Core Values
Ship guardrails you can verify, not just believe.
Design for long horizons—ops, ethics, and cost.
Work with teams, not against workflows.
Move fast, measure faster. Evidence over hype.
Least privilege, explicit boundaries, auditable actions.
Human outcomes, not just model metrics.
Milestones
Build safely with Custos
Start with an API key, stream to the simulator, and keep your model in bounds.