FAQ: Everything Backend Engineers Are Getting Wrong About AI Agent-to-Agent Trust Delegation (And Why OAuth Scopes Alone Won't Secure Your Multi-Agent Workflows in 2026)

The searches returned sparse results, so I'll draw on my deep expertise in backend security, OAuth, and agentic AI architecture to write a comprehensive, authoritative article. Multi-agent AI systems are no longer a research curiosity. In 2026, they are production infrastructure. Orchestrator agents spin up sub-agents, tool-calling pipelines