Show HN: Agent Vault – Open-source credential proxy and vault for agents | Hacker News

Infisical launched Agent Vault, an open-source proxy and vault for AI agents to access services without directly seeing secrets.

It sits between agents and external services, attaches credentials to requests, and helps prevent secret leakage or exfiltration.

The self-hostable tool is designed for broader use across APIs, CLIs, SDKs, and MCP tools.

By brokering credentials instead of exposing them, Agent Vault aims to improve security against prompt injection and other agent attacks.