Securing AI Agent Credentials: Why RBAC and Crypto Identity Matter

If you’re building with AI agents today, there’s a good chance at least one of them has more access than it should. Maybe it’s a coding agent with a long-lived GitHub token. Maybe it’s an MCP-connected assistant that can read internal docs, open PRs, and hit production-adjacent APIs. Maybe it’s “just” a bot running in CI with a secrets bundle you copied from another service account because it was faster than designing proper access controls. That works right up until you need to answer basic questions like: Which agent actually performed this action? Was it allowed to do that? Who delegated that permission? Can I revoke access without breaking everything else? If the agent is compromised, what’s the blast radius? This is where a lot of agent systems start to look like the early cloud era: too many shared secrets, too little identity, and almost no principled authorization. The fix is not “more API keys.” It’s giving agents real identities and binding permissions to those identities wit