Three teams, one agent incident. Nobody knows who is responsible.

Agent trust is a buzzword without context. Depending on your role, you need a completely different signal. RSAC 2026 confirmed what engineers already knew: OAuth and SAML weren't built for agent-to-agent delegation. The gap isn't theoretical anymore. For agent owners, reputation is a core business asset. If an agent slips up, they have to prove it wasn't a flaw in the core logic. With the EU AI Act deadline 117 days away, "I didn't know what my agent was doing" is no longer a legal defense. You need cryptographic proof. Hirers don't care about the owner's marketing. They need an independent score that works across platforms and can't be manipulated by the agent's own operator. Platforms manage thousands of agents in real time. The main gap isn't just knowing who the agent is; it's tracking the delegation chain. When Agent A hires Agent B, who is accountable? You need a recursive audit trail, not a flat log. Why a single score fails all three A simple rating system breaks immediately. A