Coinbase's x402 protocol has become the default rail for agent-initiated payments — the idea that an AI agent can hit a paywall, get an HTTP 402 response, and settle instantly in stablecoins without a human in the loop. It's been treated as evidence that autonomous agent commerce is already happening at scale. New analysis from TRM Labs complicates that story. The firm examined roughly $52.7 million across 198.9 million settlements processed through Coinbase's x402 facilitators on Base, Solana, and Polygon since the protocol launched in May 2025. After stripping out self-payments and other anomalous flows — the kind of noise that inflates transaction counts without reflecting real economic activity — the researchers found that most of the volume could not be clearly attributed to AI agents at all. That's a meaningful gap between the narrative and the ledger. x402's transaction count has been cited widely as a proxy for agentic commerce adoption, but raw settlement counts don't distinguish an agent autonomously purchasing an API call from a developer testing a facilitator, a bot running arbitrage, or duplicate/self-referential payments bouncing through the same wallet. TRM's attempt to actually attribute volume to agent behavior, rather than take the transaction count at face value, is the kind of scrutiny the agent economy needs more of and has mostly lacked — most reporting on protocols like x402 has repeated headline volume figures without verifying who initiated the transactions. This matters for the broader accountability push in agent infrastructure. If x402 volume is the leading indicator for agent-driven payments, and most of that volume turns out to be unattributable or non-agentic on closer inspection, then the metric itself needs a harder definition before it can support claims about how fast agentic commerce is actually growing. The episode is a reminder that verifiable attribution — proving a transaction actually originated from an autonomous agent, not just that it settled through an agent-friendly rail — is still an open problem, not a solved one. Payment settlement infrastructure and identity/attribution infrastructure are separate layers, and right now the first is far ahead of the second. For a protocol ecosystem trying to build trust around agent-to-agent value transfer, the lesson is straightforward: transaction counts are not attestations. Until there's a reliable way to verify that an agent, specifically, initiated a payment, claims about the scale of the agent economy should be read with that caveat attached.