Alter: Secure access control and authorization platform for agent workflows | Y Combinator

▤ Summary

Alter introduces a security layer for AI agent workflows that verifies identity and enforces fine-grained RBAC and ABAC policies on each action. The platform blocks dangerous requests in real time and records detailed audit trails for every request, response, and decision. The founders position the product as a way to run agents in production without exposing blanket credentials or triggering compliance risks. The company also offers ongoing red teaming support to help customers detect prompt injection and exfiltration attacks.

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